以下面例子为说明：
<title></title> ???<script src="Scripts/jquery-1.4.1-vsdoc.js" type="text/javascript"></script> ???<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script> ???<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> ???<script type="text/javascript"> ???????$(function () { ???????????var iCount = setInterval(GetBack, 3000); ???????????function GetBack() { ???????????????alert("aa"); ???????????????$.ajax({ ???????????????????type: "POST", ???????????????????url: "WebForm4.aspx/GetString", ???????????????????dataType: "text", ???????????????????contentType: "application/json; charset=utf-8", ???????????????????beforeSend: function (XMLHttpRequest) { ???????????????????}, ???????????????????success: function (msg) { ???????????????????????alert("ff"); ???????????????????}, ???????????????????error: function (msg) { ???????????????????????alert(msg); ???????????????????} ???????????????}); ???????????} ???????????$("#cOk").click(function (e) { ???????????????clearInterval(iCount); ???????????}); ???????}); ???</script> ???<div> ???????<a href="#" id="cOk" >sss</a> ???</div> 后台代码------------------ ???????[WebMethod] ???????public static string GetString() ???????{ ???????????return "aa"; ???????}总结：启用使用 setInterval(function(){}, timer);
停止使用 clearInterval(启用的interval元素)。
js setInterval 启用&停止
原文地址：https://www.cnblogs.com/ostrich-sunshine/p/8442605.html