样例1：

现在有如下一个js获取到的字符串，我们要解析出code、resultCode2、resultCode1中的数据

{
	"code":"codeV",
	"resultCode2":"resultCode2V",
	"resultCode1":"resultCode1V"
}

如图的json数据可以使用下面的代码进行解析

		var jsonValue = JSON.parse(要解析的字段);
		console.log(jsonValue);
        var code = jsonValue.code;
        var resultCode1 = jsonValue.resultCode1;
        var resultCode2 = jsonValue.resultCode2;
        console.log(code + " " + resultCode1 + " " + resultCode2);

结果：

1.{
	"code":"codeV",
	"resultCode2":"resultCode2V",
	"resultCode1":"resultCode1V"
}
2. codeV resultCode2V resultCode1V

样例2：

如果是这样的json数据

{
"data":
	{
		"code":"codeV",
		"resultCode2":"resultCode2V",
		"resultCode1":"resultCode1V"
	}
}

可以使用这样的方法

	var result = eval(msg);
    console.log(result);
    console.log(result.data.code+" "+result.data.resultCode2+" "+result.data.resultCode1)

输出结果：

1.{
"data":
	{
		"code":"codeV",
		"resultCode2":"resultCode2V",
		"resultCode1":"resultCode1V"
	}
}
2. codeV resultCode2V resultCode1V