JQuery小记

访问dom元素

$代表整个dom tree

$("#content")

$("p")

$("li .red")

字符串转换为json对象

$.parseJSON

ajax 

    $.ajax({type: "post",url: "GetUser.ashx",success: function (data) {var t = "";var json = $.parseJSON(data);$.each(json, function (k, v) {t += k + " : " + v + "<br/>";});$("#content").append(t);},error: function () {$("#content").append("无法获取用户信息!");}});

post

$.post("GetUser.ashx", {}, function (data) {var t = "";var json = $.parseJSON(data);$.each(json, function (k, v) {t += k + " : " + v + "<br/>";});$("#content").append(t);});