浅谈JSON.parse()、JSON.stringify()和eval()的作用

（1）JSON.parse 函数

var json = '{"name":"GDT","age":23,"University":"GDUT"}';
var info = JSON.parse(json);　　//解析为JSON对象
document.write(info.name + ' is a student of ' + info.University + ' and he is ' + info.age + " years old."); /info为Object对象

（2）JSON.stringify()函数

var info = {name:"GDT",age:23,University:"GDUT"};
var json = JSON.stringify(info); //转换为JSON字符串
document.write(json); //output为{"name":"GDT","age":23,"University":"GDUT"}

（3）eval()函数

var json = '{"name":"GDT","age":23,"University":"GDUT"}';
var info = eval('(' + json + ')');  //解析为JSON对象
document.write(info);            //output为[object Object]