js生成json数组

		var datas=[];

		var data = {};
		data["id"] = 1;
		data["name"] = "test" + 1;
		data["age"] = 1 * 2;
		datas.push(data);
		var jsonString = JSON.stringify(datas);  //[{"id":1,"name":"test1","age":2}]
		msg.innerHTML=jsonString;
		var epc=eval("("+jsonString+")");
		alert(epc[0].id);