nodejs读写json文件的简单方法(必看)

nodejs 读json文件

var fs=reauire('fs');
var file="d:\\0.json";
var result=json.parse(fs.readfilesync( file));
//操作对象

nodejs 写json文件

var coors = {};
  coors.left_top = {};
  coors.right_top = {};
  coors.left_bottom = {};
  coors.right_bottom = {};
//填充coors中内容
var filename = "d:\\coors\\0.json";
 fs.writefilesync(filename, json.stringify(coors));
 //对象嵌套
 var fs = require('fs');
var filedirectory = "d:\\column";
var newfiledirectory = "d:\\new";
if (fs.existssync(filedirectory)) {
  var files = fs.readdirsync(filedirectory);

  for (var i = 0; i < files.length; i++) {

    var filepath = filedirectory + "/" + files[i];
    var newfilepath = newfiledirectory + "/" + files[i]
    var filestr = json.parse(fs.readfilesync(filepath));
    for (var item in filestr) {
      var inter=filestr[item];
       for(var m in inter)
       {
        inter[m]=parsefloat(inter[m]);

       }
      fs.writefilesync(newfilepath, json.stringify(filestr));
    }

  }
} else {
  console.log(filedirectory + " not found!");
}

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