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This article is about how ajax can refresh pages automatically. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Html section:

Ajax realizes automatic refresh

The time now is:

Var xmlobj; var count=0; function createXMLHttpRequest () {if (window.ActiveXObject) {xmlobj=new ActiveXObject ("Microsoft.XMLHTTP");} else if (window.XMLHttpRequest) {xmlobj=new XMLHttpRequest () }} function Autofresh () {createXMLHttpRequest (); count=count+1; xmlobj.open ("GET", "currenttime.php?count=" + count,true); xmlobj.onreadystatechange=doAjax Xmlobj.send ("r =" + Math.random ()); / / use random number processing cache} function doAjax () {if (xmlobj.readyState==4 & & xmlobj.status==200) {var time_span=document.getElementById ('currenttime') Time_ SPAN [XSS _ clean] = xmlobj.responseText; setTimeout ("Autofresh ()", 2000);}}

Php page section

Effect picture:

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