nodejs读写json文件的简单方法

var fs=reauire('fs');

var file="d:\\0.json";

var result=JSON.parse(fs.readFileSync( file));

//操作对象

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!");

}