js对象转换为字符串,javajson字符串转json对象

JSON字符串转换为JavaScript对象
使用JavaScript内置函数JSON.parse()将字符串转换为JavaScript对象

// JSON字符串var text = '{"code":"1000","msg":"成功","data":[{"name":"孝顺的朋友","age":"20"},{"name":"zjdhy","age":"30"},{"name":"鲤鱼麦片","age":"25"}]}';console.log(typeof text); // 输出：stringconsole.log(text); // 输出：{"code":"1000","msg":"成功","data":[{"name":"孝顺的朋友","age":"20"},{"name":"zjdhy","age":"30"},{"name":"鲤鱼麦片","age":"25"}]}// 对象var obj = JSON.parse(text);console.log(typeof obj); // 输出：objectconsole.log(obj); // 输出：{code: "1000", msg: "成功", data: Array(3)}console.log(obj.code); // 输出：1000console.log(obj.data[0]); // 输出：{name: "孝顺的朋友", age: "20"}console.log(obj.data[0].name);// 输出：孝顺的朋友

JavaScript对象转JSON字符串
使用JavaScript内置函数JSON.stringify()将JavaScript对象转为JSON字符串

// 对象var dog = {name:"gougou","age":"2"};// JSON字符串var newString = JSON.stringify(dog);console.log(typeof newString); // 输出：stringconsole.log(newString); // 输出：{"name":"gougou","age":"2"}