JS Read JSON data

JS Read the JSON method I have access to two kinds:
Method One: The function constructs the definition method to return
var Strjson = "{name: ' JSON name '}";//JSON obtained
var obj = new Function ("return" + Strjson) ();//the converted JSON object
alert (obj.name);//json name

Method Two: The famous eval function in JS
var Strjson = "{name: ' JSON name '}";//JSON obtained
var obj = eval ("(" + Strjson + ")");//the converted JSON object
alert (obj.name);//json name

The second way to note is that the object expression {' name ': ' JSON name '} must be extended with "()", otherwise
var Strjson = "{name: ' JSON name '}";
var obj = eval (Strjson);
alert (obj.constructor);//string constructor
alert (obj.name);//undefine
The object expression must be extended to eval execution to generate an anonymous object!

JS Read JSON data