JQquery的一些使用心得分享

var msgClass = function(){
this.init = function(){
var msgDiv = "<div id = \"msg_show\" style=\"position: fixed; bottom: 0px; right: 0px; _position: absolute; display: none;\">" +
"<a id = \"msg_show_a\" href=\"javascript:void(0);\">" +
"<div style=\"float: left; width: 200px; height: 30px; font-size: 12px; color: #f00; line-height: 30px; text-align: left; position: relative; border: 1px #ccc solid; background-color: #eff;\">" +
"<img src=\"/common/images/xx.gif\" width=\"11\" height=\"11\" style=\"float: left; margin: 9px; display: inline;\" />" +
"您有新的消息，请注意查收！" +
"</div>" +
" </a>" +
"</div>" +
"<div id=\"msg_block\" style=\"position: fixed; bottom: 30px; right: 0px; _position: absolute; display: none;\">" +
"<div style=\"float: left; width: 200px; height: 140px; position: relative; border: 1px #ccc solid; background-color: #eff; overflow-x:hidden; overflow-y:scroll\">" +
"<ul class=\"xxx\" id=\"msg_content\">" +
"</ul>" +
"</div>" +
"</div>";
$("body", window.parent.document).append(msgDiv)
$("#msg_show_a", window.parent.document).click(function(){msg_click()});
}
var msg_click = function(){
var msgDiv = window.parent.document.getElementById("msg_block");
if ("none" == msgDiv.style.display) {
msgDiv.style.display = "block";
} else {
msgDiv.style.display = "none";
}
}
this.getMessage = function() {
$.ajax( {
tyep : "POST",
url : "/msg/getPromptMsgInfo.action",
success : function(msg) {
var json = eval(msg);
var num = json.length;
if (num != 0) {
$("#msg_show",window.parent.document).css("display", "");
$("#msg_content", window.parent.document).empty();
for ( var i = 0; i < num; i++) {
var title = json[i].TITLE.substr(0, 12);
var sub = "<li title=\""
+ json[i].TITLE
+ "\"><a id =\"a_"+i+"\" href=\"javascript:void(0)\" >"
+ title
+ "</a></li>";
var MSG_ID=json[i].MSG_ID;
var RELATION_ID=json[i].RELATION_ID;
$("#msg_content", window.parent.document).append(sub);
$("#a_"+i, window.parent.document).click("{'MSGID':'"+MSG_ID+"','RELATIONID':'"+RELATION_ID+"'}",
function(e){
msgSelected(e.data);
});
}
}else{
$("#msg_show", window.parent.document).css("display", "none");
}
}
});
}
var msgSelected = function(data) {
var href = "";
var json;
eval("json="+data);
var msgId = json.MSGID;
var relationId = json.RELATIONID;
/*start----write your logic*/
if (1 == relationId) {
href = "/usercenter/showWaitDiagnose.action?isOnClick=3";
}
//........
/*end----*/
$.ajax( {
type : "post",
url : "/msg/updateMsgStatue.action",
data : "msgId=" + msgId,
success : function() {
parent.window.location.href = href;
}
});
}
}
function getMsg(){
new msgClass().getMessage();
}
$(document).ready(function(){
var msg = new msgClass();
msg.init();
msg.getMessage();
setInterval("getMsg()", 3000);
});

　　　　function fun1(){
　　　　　　for(var i = 0; i < NUM; i++){
　　　　　　　　　　var a = i;
　　　　　　　　　　var b = i+1;
　　　　　　　　$("#div1").click(function(){
　　　　　　　　　　fun(a,b);
　　　　　　　　});
　　　　　　}
　　　　}

　　　　function fun(data)
　　　　{
　　　　　　var json;
　　　　　　eval("json="+data);
　　　　　　.....
　　　　}