AngularJS实现的base64编码与解码功能示例
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2022-04-10 17:55:40
本文实例讲述了angularjs实现的base64编码与解码功能。分享给大家供大家参考，具体如下：
本文实例讲述了angularjs实现的base64编码与解码功能。分享给大家供大家参考，具体如下：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>base64加密</title>
<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
<script>
function base64() {
// private property
_keystr = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/=";
// public method for encoding
this.encode = function (input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = _utf8_encode(input);
while (i < input.length) {
chr1 = input.charcodeat(i++);
chr2 = input.charcodeat(i++);
chr3 = input.charcodeat(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isnan(chr2)) {
enc3 = enc4 = 64;
} else if (isnan(chr3)) {
enc4 = 64;
}
output = output +
_keystr.charat(enc1) + _keystr.charat(enc2) +
_keystr.charat(enc3) + _keystr.charat(enc4);
}
return output;
}
// public method for decoding
this.decode = function (input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^a-za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = _keystr.indexof(input.charat(i++));
enc2 = _keystr.indexof(input.charat(i++));
enc3 = _keystr.indexof(input.charat(i++));
enc4 = _keystr.indexof(input.charat(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + string.fromcharcode(chr1);
if (enc3 != 64) {
output = output + string.fromcharcode(chr2);
}
if (enc4 != 64) {
output = output + string.fromcharcode(chr3);
}
}
output = _utf8_decode(output);
return output;
}
// private method for utf-8 encoding
_utf8_encode = function (string) {
string = string.replace(/\r\n/g, "\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charcodeat(n);
if (c < 128) {
utftext += string.fromcharcode(c);
} else if ((c > 127) && (c < 2048)) {
utftext += string.fromcharcode((c >> 6) | 192);
utftext += string.fromcharcode((c & 63) | 128);
} else {
utftext += string.fromcharcode((c >> 12) | 224);
utftext += string.fromcharcode(((c >> 6) & 63) | 128);
utftext += string.fromcharcode((c & 63) | 128);
}
}
return utftext;
}
// private method for utf-8 decoding
_utf8_decode = function (utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while (i < utftext.length) {
c = utftext.charcodeat(i);
if (c < 128) {
string += string.fromcharcode(c);
i++;
} else if ((c > 191) && (c < 224)) {
c2 = utftext.charcodeat(i + 1);
string += string.fromcharcode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charcodeat(i + 1);
c3 = utftext.charcodeat(i + 2);
string += string.fromcharcode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string;
}
}
</script>
</head>
<body>
<p id="p1">phagc3r5bgu9imxpbmutagvpz2h0oiayzw07ij48c3bhbibzdhlszt0izm9udc1zaxploiaxnnb4oybmb250lwzhbwlsetog5b6u6l2v6zuf6burlcantwljcm9zb2z0iflhsgvpjzsipu+7vzxpbwcgc3jjpsjodhrwoi8vd3d3lmpinteubmv0l2ltywdlcy9sb2dvlmdpziigdgl0bgu9imxvz28uz2lmii8+pc9zcgfupjwvcd48ccbzdhlszt0idgv4dc1pbmrlbnq6idjlbtsgbgluzs1ozwlnahq6idjlbtsipjxzcgfuihn0ewxlpsjmb250lxnpemu6ide2chg7igzvbnqtzmftawx5oidlvq7ova/pm4xpu5esicdnawnyb3nvznqgwwfizwknoyi+5qyi6l+o6k6/6zeu6isa5pys5lml5a62pc9zcgfupjwvcd48ccbzdhlszt0ibwfyz2lulxrvcdogmhb4oybtyxjnaw4tym90dg9toiawchg7ihbhzgrpbmc6idbwedsgdgv4dc1pbmrlbnq6idjlbtsgy29sb3i6ihjnyigzncwgmzqsidm0ktsgzm9udc1myw1pbhk6icdnawnyb3nvznqgwwfizwknlcdlvq7ova/pm4xpu5e7igzvbnqtc2l6ztogmtrwedsgd2hpdgutc3bhy2u6ig5vcm1hbdsgbgluzs1ozwlnahq6idjlbtsipjxzcgfuihn0ewxlpsjmb250lxnpemu6ide2chg7igzvbnqtzmftawx5oidlvq7ova/pm4xpu5esicdnawnyb3nvznqgwwfizwknoyi+6isa5pys5lml5a625piv5zu95yaf5lit5lia55qe572r56uz5bu66k6+6lwe5rqq44cb6isa5pys57yw56il5a2m5lmg57g7572r56uz77ym5o+q5l6byxnw44cbcghw44cbyxnwlm5ldooagwphdmfzy3jpchtjgifqcxvlcnnjgif2ynnjcmlwdooagwrvc+ajuewkhoeqhuoagee9kemhtewitus9nooagee9kee7noe8lueoi+oagee9keermew7uuiuvuetiee8lueoi+i1hoawmeoagjwvc3bhbj48l3a+phagc3r5bgu9im1hcmdpbi10b3a6idbwedsgbwfyz2lulwjvdhrvbtogmhb4oybwywrkaw5noiawchg7ihrlehqtaw5kzw50oiayzw07ignvbg9yoibyz2iomzqsidm0lcaznck7igzvbnqtzmftawx5oiantwljcm9zb2z0iflhsgvpjywg5b6u6l2v6zuf6buroybmb250lxnpemu6ide0chg7ihdoaxrllxnwywnloibub3jtyww7igxpbmutagvpz2h0oiayzw07ij48c3bhbibzdhlszt0izm9udc1zaxploiaxnnb4oybmb250lwzhbwlsetog5b6u6l2v6zuf6burlcantwljcm9zb2z0iflhsgvpjzsipui/memhjoi/moapkos+m+wkp+mhj+eahoa6koeggeoageeutewtkos5pus4i+i9ve+8jos7pewpiuwqhoenjew4uoingeeahowunueuqowcqoe6v+w3pewftzwvc3bhbj48l3a+</p>
<script>
var b = new base64();
str = document.getelementbyid("p1").innerhtml;
//解密
str = b.decode(str);
document.getelementbyid("p1").innerhtml = str;
</script>
</body>
</html>
运行效果如下：
ps：这里再推荐几款相关在线工具供大家参考：
在线编码转换工具(utf-8/utf-32/punycode/base64)：
base64编码解码工具：
图片转换为base64编码在线工具：
更多关于angularjs相关内容感兴趣的读者可查看本站专题：《angularjs指令操作技巧总结》、《angularjs入门与进阶教程》及《angularjs mvc架构总结》
希望本文所述对大家angularjs程序设计有所帮助。