Simple code to implement jquery timer_jquery

Simple code to implement jquery timer.

Today, the project encountered a message module, which is at the top of the navigation bar. I want to realize that when a message is received, it can be refreshed in time and display the message bar. After thinking about it for a long time, I thought of 2 methods,

1. Use the Ajax tag of struts2.

2. Use jquery.

struts2 is a bit troublesome, jquery is relatively simple. I used jquery. Paste the code below: Get data from the server every 3 seconds and assign it to the DOM object to be displayed.

Copy code The code is as follows:

$(function(){
run();
var interval;
function run(){
interval = setInterval(chat,"3000");
}
function chat(){
$.post("searchMessage.action",{"mark":"receive","ajax":"ajax" },function(data){
$("span[name='mes']").html(data.num);
},"json");
}
$( "#closeChat").click(function(){
clearTimeout(interval);
});

});