关于IE8 创建XMLHttpRequest 的问题 - Web 开发 / Ajax
- HTML code
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'MyJsp.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <script type="text/javascript">function showHint() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp = new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { document.getElementById("txtHint").innerHTML = xmlhttp.responseText; } } xmlhttp.open("GET", "web/enterprise/pagetag.action", true); xmlhttp.send(); setTimeout("showHint()",2000);}</script> </head> <body onload="showHint()"> <p> <span id="txtHint"></span> </p> </body></html>最后一句 setTimeout("showHint()",2000);
是用来设置刷新的时间，这种写法在火狐、google浏览器中都可以运行，可以刷新。
但是在IE8中可以出结果，但是就是不能刷新，当使用IE8的兼容模式时菜可以自动的刷新，请问是什么原因导致的呢？
[解决办法]
- JScript code
xmlhttp.open("GET", "web/enterprise/pagetag.action?" + escape(new Date()), true);
[解决办法]
防止浏览器缓存