JS read json Two common methods of the sample introduction

method One: The most famous eval method in JS

The code is as follows:
var strjson= "{name: ' John '}";//json
var obj=eval ("(" ("+strjson+"));//Converted JSON object
alert (obj.name);//json name

This method needs to be noted for:

Object Expression {' name ': ' John '} must be extended with ' () ' otherwise

The code is as follows:
var Strjson = "{name: ' John '}";
var obj = eval (Strjson);
alert (obj.constructor);//string constructor
alert (obj.name);//undefine

An object expression must be extended to eval execution to generate an anonymous object!

Method Two: The function constructs the definition method to return

The code is as follows:
var Strjson = "{name: ' John '}";/Get JSON
var obj = new Function ("return" + Strjson) ()//converted JSON object
alert (obj.name);//json name