$.ajax({
	type: "post",
	url:  "/api/",
	data: {username:username,password:password}, //提交到demo.php的数据
	dataType: "jsonp", //回调函数接收数据的数据格式
	success: function(data){
		var json = eval('(' + data + ')');
		if(json.code == 0){
			//成功
		}else{
			//失败
		}
	},
	error:function(msg){
	   console.log(msg);
	}
  });
 });
 })