editplus json文本格式化

json格式化脚本下载：https://download.csdn.net/download/sanzhongguren/10367602

Tools->Configure User Tools->User tools->Add Tool->Program

Menu text:名称随意

Command:Cscript.exe /nologo C:\program_files\EditPlus\jsFormatter.js

如果提示找不到文件可以尝试用英文引号将路径引起来

格式化之前

CTRL+1 格式化之后

没有下载积分的可以复制以下脚本代码

//初始化选项
var indent_size = 1;//缩进空格数, 为1时使用制表符缩进
var indent_char = ' ';//缩进字符
var preserve_newlines = false;//是否保留空行, 默认不保留

//程序开始
var input = "";
while(!WScript.StdIn.AtEndOfStream)
{
   input += WScript.StdIn.ReadAll();
}

if (indent_size == 1) {
   indent_char = '\t';
}

var js_source = input.replace(/^\s+/, '');
var formated_code='';
if (js_source && js_source[0] !== '<') {
        formated_code =js_beautify(js_source, {indent_size: indent_size, indent_char: indent_char, preserve_newlines:preserve_newlines});
    }
if(!formated_code.length==0)
	WScript.Echo(formated_code);
else
	WScript.Echo('Are you sure your input is javascript source file?');

/*

 JS Beautifier
---------------
  $Date$
  $Revision$


  Written by Einars Lielmanis, <[e-mail]>
      http://elfz.laacz.lv/beautify/

  Originally converted to javascript by Vital, <[e-mail]>
      http://my.opera.com/Vital/blog/2007/11/21/javascript-beautify-on-javascript-translated


  You are free to use this in any way you want, in case you find this useful or working for you.

  Usage:
    js_beautify(js_source_text);
    js_beautify(js_source_text, options);

  The options are:
    indent_size (default 4) — indentation size,
    indent_char (default space) — character to indent with,
    preserve_newlines (default true) — whether existing line breaks should be preserved,
    indent_level (default 0)  — initial indentation level, you probably won't need this ever,

    e.g

    js_beautify(js_source_text, {indent_size: 1, indent_char: '\t'});


*/



function js_beautify(js_source_text, options)
{

    var input, output, token_text, last_type, last_text, last_word, current_mode, modes, indent_string;
    var whitespace, wordchar, punct, parser_pos, line_starters, in_case;
    var prefix, token_type, do_block_just_closed, var_line, var_line_tainted, if_line_flag;
    var indent_level;


    var options               = options || {};
    var opt_indent_size       = options['indent_size'] || 4;
    var opt_indent_char       = options['indent_char'] || ' ';
    var opt_preserve_newlines =
        typeof options['preserve_newlines'] === 'undefined' ? true : options['preserve_newlines'];
    var opt_indent_level      = options['indent_level'] || 0; // starting indentation


    function trim_output()
    {
        while (output.length && (output[output.length - 1] === ' ' || output[output.length - 1] === indent_string)) {
            output.pop();
        }
    }

    function print_newline(ignore_repeated)
    {

        ignore_repeated = typeof ignore_repeated === 'undefined' ? true: ignore_repeated;

        if_line_flag = false;
        trim_output();

        if (!output.length) {
            return; // no newline on start of file
        }

        if (output[output.length - 1] !== "\n" || !ignore_repeated) {
            output.push("\n");
        }
        for (var i = 0; i < indent_level; i++) {
            output.push(indent_string);
        }
    }



    function print_space()
    {
        var last_output = output.length ? output[output.length - 1] : ' ';
        if (last_output !== ' ' && last_output !== '\n' && last_output !== indent_string) { // prevent occassional duplicate space
            output.push(' ');
        }
    }


    function print_token()
    {
        output.push(token_text);
    }

    function indent()
    {
        indent_level++;
    }


    function unindent()
    {
        if (indent_level) {
            indent_level--;
        }
    }


    function remove_indent()
    {
        if (output.length && output[output.length - 1] === indent_string) {
            output.pop();
        }
    }


    function set_mode(mode)
    {
        modes.push(current_mode);
        current_mode = mode;
    }


    function restore_mode()
    {
        do_block_just_closed = current_mode === 'DO_BLOCK';
        current_mode = modes.pop();
    }


    function in_array(what, arr)
    {
        for (var i = 0; i < arr.length; i++)
        {
            if (arr[i] === what) {
                return true;
            }
        }
        return false;
    }



    function get_next_token()
    {
        var n_newlines = 0;
        var c = '';

        do {
            if (parser_pos >= input.length) {
                return ['', 'TK_EOF'];
            }
            c = input.charAt(parser_pos);

            parser_pos += 1;
            if (c === "\n") {
                n_newlines += 1;
            }
        }
        while (in_array(c, whitespace));

        var wanted_newline = false;

        if (opt_preserve_newlines) {
            if (n_newlines > 1) {
                for (var i = 0; i < 2; i++) {
                    print_newline(i === 0);
                }
            }
            wanted_newline = (n_newlines === 1);
        }


        if (in_array(c, wordchar)) {
            if (parser_pos < input.length) {
                while (in_array(input.charAt(parser_pos), wordchar)) {
                    c += input.charAt(parser_pos);
                    parser_pos += 1;
                    if (parser_pos === input.length) {
                        break;
                    }
                }
            }

            // small and surprisingly unugly hack for 1E-10 representation
            if (parser_pos !== input.length && c.match(/^[0-9]+[Ee]$/) && input.charAt(parser_pos) === '-') {
                parser_pos += 1;

                var t = get_next_token(parser_pos);
                c += '-' + t[0];
                return [c, 'TK_WORD'];
            }

            if (c === 'in') { // hack for 'in' operator
                return [c, 'TK_OPERATOR'];
            }
            if (wanted_newline && last_type !== 'TK_OPERATOR' && !if_line_flag) {
                print_newline();
            }
            return [c, 'TK_WORD'];
        }

        if (c === '(' || c === '[') {
            return [c, 'TK_START_EXPR'];
        }

        if (c === ')' || c === ']') {
            return [c, 'TK_END_EXPR'];
        }

        if (c === '{') {
            return [c, 'TK_START_BLOCK'];
        }

        if (c === '}') {
            return [c, 'TK_END_BLOCK'];
        }

        if (c === ';') {
            return [c, 'TK_SEMICOLON'];
        }

        if (c === '/') {
            var comment = '';
            // peek for comment /* ... */
            if (input.charAt(parser_pos) === '*') {
                parser_pos += 1;
                if (parser_pos < input.length) {
                    while (! (input.charAt(parser_pos) === '*' && input.charAt(parser_pos + 1) && input.charAt(parser_pos + 1) === '/') && parser_pos < input.length) {
                        comment += input.charAt(parser_pos);
                        parser_pos += 1;
                        if (parser_pos >= input.length) {
                            break;
                        }
                    }
                }
                parser_pos += 2;
                return ['/*' + comment + '*/', 'TK_BLOCK_COMMENT'];
            }
            // peek for comment // ...
            if (input.charAt(parser_pos) === '/') {
                comment = c;
                while (input.charAt(parser_pos) !== "\x0d" && input.charAt(parser_pos) !== "\x0a") {
                    comment += input.charAt(parser_pos);
                    parser_pos += 1;
                    if (parser_pos >= input.length) {
                        break;
                    }
                }
                parser_pos += 1;
                if (wanted_newline) {
                    print_newline();
                }
                return [comment, 'TK_COMMENT'];
            }

        }

        if (c === "'" || // string
        c === '"' || // string
        (c === '/' &&
        ((last_type === 'TK_WORD' && last_text === 'return') || (last_type === 'TK_START_EXPR' || last_type === 'TK_END_BLOCK' || last_type === 'TK_OPERATOR' || last_type === 'TK_EOF' || last_type === 'TK_SEMICOLON')))) { // regexp
            var sep = c;
            var esc = false;
            var resulting_string = '';

            if (parser_pos < input.length) {

                while (esc || input.charAt(parser_pos) !== sep) {
                    resulting_string += input.charAt(parser_pos);
                    if (!esc) {
                        esc = input.charAt(parser_pos) === '\\';
                    } else {
                        esc = false;
                    }
                    parser_pos += 1;
                    if (parser_pos >= input.length) {
                        break;
                    }
                }

            }

            parser_pos += 1;

            resulting_string = sep + resulting_string + sep;

            if (sep == '/') {
                // regexps may have modifiers /regexp/MOD , so fetch those, too
                while (parser_pos < input.length && in_array(input.charAt(parser_pos), wordchar)) {
                    resulting_string += input.charAt(parser_pos);
                    parser_pos += 1;
                }
            }
            return [resulting_string, 'TK_STRING'];
        }

        if (in_array(c, punct)) {
            while (parser_pos < input.length && in_array(c + input.charAt(parser_pos), punct)) {
                c += input.charAt(parser_pos);
                parser_pos += 1;
                if (parser_pos >= input.length) {
                    break;
                }
            }
            return [c, 'TK_OPERATOR'];
        }

        return [c, 'TK_UNKNOWN'];
    }


    //----------------------------------

    indent_string = '';
    while (opt_indent_size--) {
        indent_string += opt_indent_char;
    }

    indent_level = opt_indent_level;

    input = js_source_text;

    last_word = ''; // last 'TK_WORD' passed
    last_type = 'TK_START_EXPR'; // last token type
    last_text = ''; // last token text
    output = [];

    do_block_just_closed = false;
    var_line = false;         // currently drawing var .... ;
    var_line_tainted = false; // false: var a = 5; true: var a = 5, b = 6

    whitespace = "\n\r\t ".split('');
    wordchar = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$'.split('');
    punct = '+ - * / % & ++ -- = += -= *= /= %= == === != !== > < >= <= >> << >>> >>>= >>= <<= && &= | || ! !! , : ? ^ ^= |= ::'.split(' ');

    // words which should always start on new line.
    line_starters = 'continue,try,throw,return,var,if,switch,case,default,for,while,break,function'.split(',');

    // states showing if we are currently in expression (i.e. "if" case) - 'EXPRESSION', or in usual block (like, procedure), 'BLOCK'.
    // some formatting depends on that.
    current_mode = 'BLOCK';
    modes = [current_mode];

    parser_pos = 0;
    in_case = false; // flag for parser that case/default has been processed, and next colon needs special attention
    while (true) {
        var t = get_next_token(parser_pos);
        token_text = t[0];
        token_type = t[1];
        if (token_type === 'TK_EOF') {
            break;
        }

        switch (token_type) {

        case 'TK_START_EXPR':
            var_line = false;
            set_mode('EXPRESSION');
            if (last_type === 'TK_END_EXPR' || last_type === 'TK_START_EXPR') {
                // do nothing on (( and )( and ][ and ]( ..
            } else if (last_type !== 'TK_WORD' && last_type !== 'TK_OPERATOR') {
                print_space();
            } else if (in_array(last_word, line_starters) && last_word !== 'function') {
                print_space();
            }
            print_token();
            break;

        case 'TK_END_EXPR':
            print_token();
            restore_mode();
            break;

        case 'TK_START_BLOCK':

            if (last_word === 'do') {
                set_mode('DO_BLOCK');
            } else {
                set_mode('BLOCK');
            }
            if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
                if (last_type === 'TK_START_BLOCK') {
                    print_newline();
                } else {
                    print_space();
                }
            }
            print_token();
            indent();
            break;

        case 'TK_END_BLOCK':
            if (last_type === 'TK_START_BLOCK') {
                // nothing
                trim_output();
                unindent();
            } else {
                unindent();
                print_newline();
            }
            print_token();
            restore_mode();
            break;

        case 'TK_WORD':

            if (do_block_just_closed) {
                print_space();
                print_token();
                print_space();
                break;
            }

            if (token_text === 'case' || token_text === 'default') {
                if (last_text === ':') {
                    // switch cases following one another
                    remove_indent();
                } else {
                    // case statement starts in the same line where switch
                    unindent();
                    print_newline();
                    indent();
                }
                print_token();
                in_case = true;
                break;
            }

            prefix = 'NONE';
            if (last_type === 'TK_END_BLOCK') {
                if (!in_array(token_text.toLowerCase(), ['else', 'catch', 'finally'])) {
                    prefix = 'NEWLINE';
                } else {
                    prefix = 'SPACE';
                    print_space();
                }
            } else if (last_type === 'TK_SEMICOLON' && (current_mode === 'BLOCK' || current_mode === 'DO_BLOCK')) {
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_SEMICOLON' && current_mode === 'EXPRESSION') {
                prefix = 'SPACE';
            } else if (last_type === 'TK_STRING') {
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_WORD') {
                prefix = 'SPACE';
            } else if (last_type === 'TK_START_BLOCK') {
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_END_EXPR') {
                print_space();
                prefix = 'NEWLINE';
            }

            if (last_type !== 'TK_END_BLOCK' && in_array(token_text.toLowerCase(), ['else', 'catch', 'finally'])) {
                print_newline();
            } else if (in_array(token_text, line_starters) || prefix === 'NEWLINE') {
                if (last_text === 'else') {
                    // no need to force newline on else break
                    print_space();
                } else if ((last_type === 'TK_START_EXPR' || last_text === '=') && token_text === 'function') {
                    // no need to force newline on 'function': (function
                    // DONOTHING
                } else if (last_type === 'TK_WORD' && (last_text === 'return' || last_text === 'throw')) {
                    // no newline between 'return nnn'
                    print_space();
                } else if (last_type !== 'TK_END_EXPR') {
                    if ((last_type !== 'TK_START_EXPR' || token_text !== 'var') && last_text !== ':') {
                        // no need to force newline on 'var': for (var x = 0...)
                        if (token_text === 'if' && last_type === 'TK_WORD' && last_word === 'else') {
                            // no newline for } else if {
                            print_space();
                        } else {
                            print_newline();
                        }
                    }
                } else {
                    if (in_array(token_text, line_starters) && last_text !== ')') {
                        print_newline();
                    }
                }
            } else if (prefix === 'SPACE') {
                print_space();
            }
            print_token();
            last_word = token_text;

            if (token_text === 'var') {
                var_line = true;
                var_line_tainted = false;
            }

            if (token_text === 'if' || token_text === 'else') {
                if_line_flag = true;
            }

            break;

        case 'TK_SEMICOLON':

            print_token();
            var_line = false;
            break;

        case 'TK_STRING':

            if (last_type === 'TK_START_BLOCK' || last_type === 'TK_END_BLOCK' || last_type == 'TK_SEMICOLON') {
                print_newline();
            } else if (last_type === 'TK_WORD') {
                print_space();
            }
            print_token();
            break;

        case 'TK_OPERATOR':

            var start_delim = true;
            var end_delim = true;
            if (var_line && token_text !== ',') {
                var_line_tainted = true;
                if (token_text === ':') {
                    var_line = false;
                }
            }

            if (token_text === ':' && in_case) {
                print_token(); // colon really asks for separate treatment
                print_newline();
                break;
            }

            if (token_text === '::') {
                // no spaces around exotic namespacing syntax operator
                print_token();
                break;
            }

            in_case = false;

            if (token_text === ',') {
                if (var_line) {
                    if (var_line_tainted) {
                        print_token();
                        print_newline();
                        var_line_tainted = false;
                    } else {
                        print_token();
                        print_space();
                    }
                } else if (last_type === 'TK_END_BLOCK') {
                    print_token();
                    print_newline();
                } else {
                    if (current_mode === 'BLOCK') {
                        print_token();
                        print_newline();
                    } else {
                        // EXPR od DO_BLOCK
                        print_token();
                        print_space();
                    }
                }
                break;
            } else if (token_text === '--' || token_text === '++') { // unary operators special case
                if (last_text === ';') {
                    // space for (;; ++i)
                    start_delim = true;
                    end_delim = false;
                } else {
                    start_delim = false;
                    end_delim = false;
                }
            } else if (token_text === '!' && last_type === 'TK_START_EXPR') {
                // special case handling: if (!a)
                start_delim = false;
                end_delim = false;
            } else if (last_type === 'TK_OPERATOR') {
                start_delim = false;
                end_delim = false;
            } else if (last_type === 'TK_END_EXPR') {
                start_delim = true;
                end_delim = true;
            } else if (token_text === '.') {
                // decimal digits or object.property
                start_delim = false;
                end_delim = false;

            } else if (token_text === ':') {
                // zz: xx
                // can't differentiate ternary op, so for now it's a ? b: c; without space before colon
                if (last_text.match(/^\d+$/)) {
                    // a little help for ternary a ? 1 : 0;
                    start_delim = true;
                } else {
                    start_delim = false;
                }
            }
            if (start_delim) {
                print_space();
            }

            print_token();

            if (end_delim) {
                print_space();
            }
            break;

        case 'TK_BLOCK_COMMENT':

            print_newline();
            print_token();
            print_newline();
            break;

        case 'TK_COMMENT':

            // print_newline();
            print_space();
            print_token();
            print_newline();
            break;

        case 'TK_UNKNOWN':
            print_token();
            break;
        }

        last_type = token_type;
        last_text = token_text;
    }

    return output.join('');

}


//+++++++++++++++++++++++++++test+++++++++++++++++=

function lazy_escape(str)
{
    return str.replace(/</g, '<').replace(/\>/g, '>').replace(/\n/g, '<br />');
}

function bt(input, expected)
{
    expected = expected || input;

    result = js_beautify(input, {indent_size:indent_size, indent_char:indent_char, preserve_newlines:preserve_newlines});

    if (result != expected) {
        test_result +=
            '\n---- input --------\n' + lazy_escape(input) +
            '\n---- expected -----\n' + lazy_escape(expected) +
            '\n---- received -----\n' + lazy_escape(result) +
            '\n-------------------';
        tests_failed += 1;
    } else {
        tests_passed += 1;
    }

}

function results()
{
    if (tests_failed == 0) {
        test_result += 'All ' + tests_passed + ' tests passed.';
    } else {
        test_result += '\n' + tests_failed + ' tests failed.';
    }
    return test_result;
}

function test_js_beautify()
{

    bt('');
    bt('a        =          1', 'a = 1');
    bt('a=1', 'a = 1');
    bt("a();\n\nb();", "a();\n\nb();");
    bt('var a = 1 var b = 2', "var a = 1\nvar b = 2");
    bt('a = " 12345 "');
    bt("a = ' 12345 '");
    bt('if (a == 1) b = 2', "if (a == 1) b = 2");
    bt('if(1){2}else{3}', "if (1) {\n    2\n} else {\n    3\n}");
    bt('if(1||2)', 'if (1 || 2)');
    bt('(a==1)||(b==2)', '(a == 1) || (b == 2)');
    bt('var a = 1 if (2) 3', "var a = 1\nif (2) 3");
    bt('a = a + 1');
    bt('a = a == 1');
    bt('/12345[^678]*9+/.match(a)');
    bt('a /= 5');
    bt('a = 0.5 * 3');
    bt('a *= 10.55');
    bt('a < .5');
    bt('a <= .5');
    bt('a<.5', 'a < .5');
    bt('a<=.5', 'a <= .5');
    bt('a = 0xff;');
    bt('a=0xff+4', 'a = 0xff + 4');
    bt('a = [1, 2, 3, 4]');
    bt('F*(g/=f)*g+b', 'F * (g /= f) * g + b');
    bt('a.b({c:d})', "a.b({\n    c: d\n})");
    bt('a.b\n(\n{\nc:\nd\n}\n)', "a.b({\n    c: d\n})");
    bt('a=!b', 'a = !b');
    bt('a?b:c', 'a ? b: c'); // 'a ? b : c' would need too make parser more complex to differentiate between ternary op and object assignment
    bt('a?1:2', 'a ? 1 : 2'); // 'a ? b : c' would need too make parser more complex to differentiate between ternary op and object assignment
    bt('a?(b):c', 'a ? (b) : c'); // this works, though
    bt('function void(void) {}');
    bt('if(!a)', 'if (!a)');
    bt('a=~a', 'a = ~a');
    bt('a;/*comment*/b;', "a;\n/*comment*/\nb;");
    bt('if(a)break', "if (a) break");
    bt('if(a){break}', "if (a) {\n    break\n}");
    bt('if((a))', 'if ((a))');
    bt('for(var i=0;;)', 'for (var i = 0;;)');
    bt('a++;', 'a++;');
    bt('for(;;i++)', 'for (;; i++)');
    bt('for(;;++i)', 'for (;; ++i)');
    bt('return(1)', 'return (1)');
    bt('try{a();}catch(b){c();}finally{d();}', "try {\n    a();\n} catch(b) {\n    c();\n} finally {\n    d();\n}");
    bt('(xx)()'); // magic function call
    bt('a[1]()'); // another magic function call
    bt('if(a){b();}else if(', "if (a) {\n    b();\n} else if (");
    bt('switch(x) {case 0: case 1: a(); break; default: break}', "switch (x) {\ncase 0:\ncase 1:\n    a();\n    break;\ndefault:\n    break\n}");
    bt('a !== b');
    bt('if (a) b(); else c();', "if (a) b();\nelse c();");
    bt("// comment\n(function()"); // typical greasemonkey start
    bt("// comment\n(function something()"); // typical greasemonkey start
    bt("{\n\n    x();\n\n}"); // was: duplicating newlines
    bt('if (a in b)');
    //bt('var a, b');
    bt('{a:1, b:2}', "{\n    a: 1,\n    b: 2\n}");
    bt('var l = {\'a\':\'1\', \'b\':\'2\'}', "var l = {\n    'a': '1',\n    'b': '2'\n}");
    bt('if (template.user[n] in bk)');
    bt('{{}/z/}', "{\n    {}\n    /z/\n}");
    bt('return 45', "return 45");
    bt('If[1]', "If[1]");
    bt('Then[1]', "Then[1]");
    bt('a = 1e10', "a = 1e10");
    bt('a = 1.3e10', "a = 1.3e10");
    bt('a = 1.3e-10', "a = 1.3e-10");
    bt('a = -1.3e-10', "a = -1.3e-10");
    bt('a = 1e-10', "a = 1e-10");
    bt('a = e - 10', "a = e - 10");
    bt('a = 11-10', "a = 11 - 10");
    bt("a = 1;// comment\n", "a = 1; // comment\n");
    bt("a = 1; // comment\n", "a = 1; // comment\n");
    bt("a = 1;\n // comment\n", "a = 1;\n// comment\n");

    bt("if (a) {\n    do();\n}"); // was: extra space appended
    bt("if\n(a)\nb()", "if (a) b()"); // test for proper newline removal

    bt("if (a) {\n// comment\n}else{\n// comment\n}", "if (a) {\n    // comment\n} else {\n    // comment\n}"); // if/else statement with empty body
    bt("if (a) {\n// comment\n// comment\n}", "if (a) {\n    // comment\n    // comment\n}"); // multiple comments indentation
    bt("if (a) b() else c()", "if (a) b()\nelse c()");
    bt("if (a) b() else if c() d()", "if (a) b()\nelse if c() d()");

    bt("{}");
    bt("{\n\n}");
    bt("do { a(); } while ( 1 );", "do {\n    a();\n} while ( 1 );");
    bt("do {} while ( 1 );");
    bt("do {\n} while ( 1 );", "do {} while ( 1 );");
    bt("do {\n\n} while ( 1 );");
    bt("var a, b, c, d = 0, c = function() {}, d = '';", "var a, b, c, d = 0,\nc = function() {},\nd = '';");
    bt("var a = x(a, b, c)");
    bt("delete x if (a) b();", "delete x\nif (a) b();");
    bt("delete x[x] if (a) b();", "delete x[x]\nif (a) b();");

    bt("a = 'a'\nb = 'b'");
    bt("a = /reg/exp");
    bt("a = /reg/");
    bt("x(); /reg/exp.match(something)", "x();\n/reg/exp.match(something)");

    bt("function namespace::something()");

    indent_size = 1;
    indent_char = ' ';
    bt('{ one_char() }', "{\n one_char()\n}");

    indent_size = 4;
    indent_char = ' ';
    bt('{ one_char() }', "{\n    one_char()\n}");

    indent_size = 1;
    indent_char = "\t";
    bt('{ one_char() }', "{\n\tone_char()\n}");

    preserve_newlines = false;
    bt('var\na=dont_preserve_newlines', 'var a = dont_preserve_newlines');

    preserve_newlines = true;
    bt('var\na=do_preserve_newlines', 'var\na = do_preserve_newlines');

    return results();
}


//+++++++++++++++++++++++++++++
/*

 Style HTML
---------------


  Written by Nochum Sossonko, ([e-mail])
    $Date$
    $Revision$

  Based on code initially developed by: Einars "elfz" Lielmanis, <[e-mail]>
      http://elfz.laacz.lv/beautify/


  You are free to use this in any way you want, in case you find this useful or working for you.

  Usage:
    style_html(html_source);

*/

function style_html(html_source, indent_size, indent_character, max_char) {
//Wrapper function to invoke all the necessary constructors and deal with the output.

  var Parser, multi_parser;

  function Parser() {

    this.pos = 0; //Parser position
    this.token = '';
    this.current_mode = 'CONTENT'; //reflects the current Parser mode: TAG/CONTENT
    this.tags = { //An object to hold tags, their position, and their parent-tags, initiated with default values
      parent: 'parent1',
      parentcount: 1,
      parent1: ''
    };
    this.tag_type = '';
    this.token_text = this.last_token = this.last_text = this.token_type = '';


    this.Utils = { //Uilities made available to the various functions
      whitespace: "\n\r\t ".split(''),
      single_token: 'br,input,link,meta,!doctype,basefont,base,area,hr,wbr,param,img,isindex,?xml,embed'.split(','), //all the single tags for HTML
      extra_liners: 'head,body,/html'.split(','), //for tags that need a line of whitespace before them
      in_array: function (what, arr) {
        for (var i=0; i<arr.length; i++) {
          if (what === arr[i]) {
            return true;
          }
        }
        return false;
      }
    }

    this.get_content = function () { //function to capture regular content between tags

      var char = '';
      var content = [];
      var space = false; //if a space is needed
      while (this.input.charAt(this.pos) !== '<') {
        if (this.pos >= this.input.length) {
          return content.length?content.join(''):['', 'TK_EOF'];
        }

        char = this.input.charAt(this.pos);
        this.pos++;
        this.line_char_count++;


        if (this.Utils.in_array(char, this.Utils.whitespace)) {
          if (content.length) {
            space = true;
          }
          this.line_char_count--;
          continue; //don't want to insert unnecessary space
        }
        else if (space) {
          if (this.line_char_count >= this.max_char) { //insert a line when the max_char is reached
            content.push('\n');
            for (var i=0; i<this.indent_level; i++) {
              content.push(this.indent_string);
            }
            this.line_char_count = 0;
          }
          else{
            content.push(' ');
            this.line_char_count++;
          }
          space = false;
        }
        content.push(char); //letter at-a-time (or string) inserted to an array
      }
      return content.length?content.join(''):'';
    }

    this.get_script = function () { //get the full content of a script to pass to js_beautify

      var char = '';
      var content = [];
      var reg_match = new RegExp('\<\/script' + '\>', 'igm');
      reg_match.lastIndex = this.pos;
      var reg_array = reg_match.exec(this.input);
      var end_script = reg_array?reg_array.index:this.input.length; //absolute end of script
      while(this.pos < end_script) { //get everything in between the script tags
        if (this.pos >= this.input.length) {
          return content.length?content.join(''):['', 'TK_EOF'];
        }

        char = this.input.charAt(this.pos);
        this.pos++;


        content.push(char);
      }
      return content.length?content.join(''):''; //we might not have any content at all
    }

    this.record_tag = function (tag){ //function to record a tag and its parent in this.tags Object
      if (this.tags[tag + 'count']) { //check for the existence of this tag type
        this.tags[tag + 'count']++;
        this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
      }
      else { //otherwise initialize this tag type
        this.tags[tag + 'count'] = 1;
        this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
      }
      this.tags[tag + this.tags[tag + 'count'] + 'parent'] = this.tags.parent; //set the parent (i.e. in the case of a div this.tags.div1parent)
      this.tags.parent = tag + this.tags[tag + 'count']; //and make this the current parent (i.e. in the case of a div 'div1')
    }

    this.retrieve_tag = function (tag) { //function to retrieve the opening tag to the corresponding closer
      if (this.tags[tag + 'count']) { //if the openener is not in the Object we ignore it
        var temp_parent = this.tags.parent; //check to see if it's a closable tag.
        while (temp_parent) { //till we reach '' (the initial value);
          if (tag + this.tags[tag + 'count'] === temp_parent) { //if this is it use it
            break;
          }
          temp_parent = this.tags[temp_parent + 'parent']; //otherwise keep on climbing up the DOM Tree
        }
        if (temp_parent) { //if we caught something
          this.indent_level = this.tags[tag + this.tags[tag + 'count']]; //set the indent_level accordingly
          this.tags.parent = this.tags[temp_parent + 'parent']; //and set the current parent
        }
        delete this.tags[tag + this.tags[tag + 'count'] + 'parent']; //delete the closed tags parent reference...
        delete this.tags[tag + this.tags[tag + 'count']]; //...and the tag itself
        if (this.tags[tag + 'count'] == 1) {
          delete this.tags[tag + 'count'];
        }
        else {
          this.tags[tag + 'count']--;
        }
      }
    }

    this.get_tag = function () { //function to get a full tag and parse its type
      var char = '';
      var content = [];
      var space = false;

      do {
        if (this.pos >= this.input.length) {
          return content.length?content.join(''):['', 'TK_EOF'];
        }

        char = this.input.charAt(this.pos);
        this.pos++;
        this.line_char_count++;

        if (this.Utils.in_array(char, this.Utils.whitespace)) { //don't want to insert unnecessary space
          space = true;
          this.line_char_count--;
          continue;
        }

        if (char === "'" || char === '"') {
          if (!content[1] || content[1] !== '!') { //if we're in a comment strings don't get treated specially
            char += this.get_unformatted(char);
            space = true;
          }
        }

        if (char === '=') { //no space before =
          space = false;
        }

        if (content.length && content[content.length-1] !== '=' && char !== '>'
            && space) { //no space after = or before >
          if (this.line_char_count >= this.max_char) {
            this.print_newline(false, content);
            this.line_char_count = 0;
          }
          else {
            content.push(' ');
            this.line_char_count++;
          }
          space = false;
        }
        content.push(char); //inserts character at-a-time (or string)
      } while (char !== '>');

      var tag_complete = content.join('');
      var tag_index;
      if (tag_complete.indexOf(' ') != -1) { //if there's whitespace, thats where the tag name ends
        tag_index = tag_complete.indexOf(' ');
      }
      else { //otherwise go with the tag ending
        tag_index = tag_complete.indexOf('>');
      }
      var tag_check = tag_complete.substring(1, tag_index).toLowerCase();
      if (tag_complete.charAt(tag_complete.length-2) === '/' ||
          this.Utils.in_array(tag_check, this.Utils.single_token)) { //if this tag name is a single tag type (either in the list or has a closing /)
        this.tag_type = 'SINGLE';
      }
      else if (tag_check === 'script') { //for later script handling
        this.record_tag(tag_check);
        this.tag_type = 'SCRIPT';
      }
      else if (tag_check === 'style') { //for future style handling (for now it justs uses get_content)
        this.record_tag(tag_check);
        this.tag_type = 'STYLE';
      }
      else if (tag_check.charAt(0) === '!') { //peek for <!-- comment
        if (tag_check.indexOf('[if') != -1) { //peek for <!--[if conditional comment
          if (tag_complete.indexOf('!IE') != -1) { //this type needs a closing --> so...
            var comment = this.get_unformatted('-->', tag_complete); //...delegate to get_unformatted
            content.push(comment);
          }
          this.tag_type = 'START';
        }
        else if (tag_check.indexOf('[endif') != -1) {//peek for <!--[endif end conditional comment
          this.tag_type = 'END';
          this.unindent();
        }
        else if (tag_check.indexOf('[cdata[') != -1) { //if it's a <[cdata[ comment...
          var comment = this.get_unformatted(']]>', tag_complete); //...delegate to get_unformatted function
          content.push(comment);
          this.tag_type = 'SINGLE'; //<![CDATA[ comments are treated like single tags
        }
        else {
          var comment = this.get_unformatted('-->', tag_complete);
          content.push(comment);
          this.tag_type = 'SINGLE';
        }
      }
      else {
        if (tag_check.charAt(0) === '/') { //this tag is a double tag so check for tag-ending
          this.retrieve_tag(tag_check.substring(1)); //remove it and all ancestors
          this.tag_type = 'END';
        }
        else { //otherwise it's a start-tag
          this.record_tag(tag_check); //push it on the tag stack
          this.tag_type = 'START';
        }
        if (this.Utils.in_array(tag_check, this.Utils.extra_liners)) { //check if this double needs an extra line
          this.print_newline(true, this.output);
        }
      }
      return content.join(''); //returns fully formatted tag
    }

    this.get_unformatted = function (delimiter, orig_tag) { //function to return unformatted content in its entirety

      if (orig_tag && orig_tag.indexOf(delimiter) != -1) {
        return '';
      }
      var char = '';
      var content = '';
      var space = true;
      do {


        char = this.input.charAt(this.pos);
        this.pos++

        if (this.Utils.in_array(char, this.Utils.whitespace)) {
          if (!space) {
            this.line_char_count--;
            continue;
          }
          if (char === '\n' || char === '\r') {
            content += '\n';
            for (var i=0; i<this.indent_level; i++) {
              content += this.indent_string;
            }
            space = false; //...and make sure other indentation is erased
            this.line_char_count = 0;
            continue;
          }
        }
        content += char;
        this.line_char_count++;
        space = true;


      } while (content.indexOf(delimiter) == -1);
      return content;
    }

    this.get_token = function () { //initial handler for token-retrieval
      var token;

      if (this.last_token === 'TK_TAG_SCRIPT') { //check if we need to format javascript
        var temp_token = this.get_script();
        if (typeof temp_token !== 'string') {
          return temp_token;
        }
        token = js_beautify(temp_token,
                {indent_size: this.indent_size, indent_char: this.indent_character, indent_level: this.indent_level}); //call the JS Beautifier
        return [token, 'TK_CONTENT'];
      }
      if (this.current_mode === 'CONTENT') {
        token = this.get_content();
        if (typeof token !== 'string') {
          return token;
        }
        else {
          return [token, 'TK_CONTENT'];
        }
      }

      if(this.current_mode === 'TAG') {
        token = this.get_tag();
        if (typeof token !== 'string') {
          return token;
        }
        else {
          var tag_name_type = 'TK_TAG_' + this.tag_type;
          return [token, tag_name_type];
        }
      }
    }

    this.printer = function (js_source, indent_character, indent_size, max_char) { //handles input/output and some other printing functions

      this.input = js_source || ''; //gets the input for the Parser
      this.output = [];
      this.indent_character = indent_character || ' ';
      this.indent_string = '';
      this.indent_size = indent_size || 2;
      this.indent_level = 0;
      this.max_char = max_char || 70; //maximum amount of characters per line
      this.line_char_count = 0; //count to see if max_char was exceeded

      for (var i=0; i<this.indent_size; i++) {
        this.indent_string += this.indent_character;
      }

      this.print_newline = function (ignore, arr) {
        this.line_char_count = 0;
        if (!arr || !arr.length) {
          return;
        }
        if (!ignore) { //we might want the extra line
          while (this.Utils.in_array(arr[arr.length-1], this.Utils.whitespace)) {
            arr.pop();
          }
        }
        arr.push('\n');
        for (var i=0; i<this.indent_level; i++) {
          arr.push(this.indent_string);
        }
      }


      this.print_token = function (text) {
        this.output.push(text);
      }

      this.indent = function () {
        this.indent_level++;
      }

      this.unindent = function () {
        if (this.indent_level > 0) {
          this.indent_level--;
        }
      }
    }
    return this;
  }

  /*_____________________--------------------_____________________*/



  multi_parser = new Parser(); //wrapping functions Parser
  multi_parser.printer(html_source, indent_character, indent_size); //initialize starting values



  while (true) {
      var t = multi_parser.get_token();
      multi_parser.token_text = t[0];
      multi_parser.token_type = t[1];

    if (multi_parser.token_type === 'TK_EOF') {
      break;
    }


    switch (multi_parser.token_type) {
      case 'TK_TAG_START': case 'TK_TAG_SCRIPT': case 'TK_TAG_STYLE':
        multi_parser.print_newline(false, multi_parser.output);
        multi_parser.print_token(multi_parser.token_text);
        multi_parser.indent();
        multi_parser.current_mode = 'CONTENT';
        break;
      case 'TK_TAG_END':
        multi_parser.print_newline(true, multi_parser.output);
        multi_parser.print_token(multi_parser.token_text);
        multi_parser.current_mode = 'CONTENT';
        break;
      case 'TK_TAG_SINGLE':
        multi_parser.print_newline(false, multi_parser.output);
        multi_parser.print_token(multi_parser.token_text);
        multi_parser.current_mode = 'CONTENT';
        break;
      case 'TK_CONTENT':
        if (multi_parser.token_text !== '') {
          multi_parser.print_newline(false, multi_parser.output);
          multi_parser.print_token(multi_parser.token_text);
        }
        multi_parser.current_mode = 'TAG';
        break;
    }
    multi_parser.last_token = multi_parser.token_type;
    multi_parser.last_text = multi_parser.token_text;
  }
  return multi_parser.output.join('');
}