Partially page refreshing in IE
Question
I need refresh a part of my page and I use this script which works in FF and Chrome, but this doesn't work in IE.
<script language="JavaScript">
<!--
var page = "ASP/include/ithome.asp";
var MyDelay = function () { ajax(page, 'scriptoutput'); };
function ajax(url,target)
{
// native XMLHttpRequest object
document.getElementById(target).innerHTML = 'sending...';
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
req.onreadystatechange = function() {ajaxDone(target);};
req.open("GET", url, true);
req.send(null);
// IE/Windows ActiveX version
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.onreadystatechange = function() {ajaxDone(target);};
req.open("GET", url, true);
req.send();
}
}
setTimeout(MyDelay, 12000);
}
function ajaxDone(target) {
// only if req is "loaded"
if (req.readyState == 4) {
// only if "OK"
if (req.status == 200 || req.status == 304) {
results = req.responseText;
document.getElementById(target).innerHTML = results;
} else {
document.getElementById(target).innerHTML="ajax error:\n" +
req.statusText;
}
}
}
function winOp(link, width, height) {
window.open(link, '', 'toolbar="no",scrollbars=no,resizeable="no",height=' + height + ',width=' + width + '');
}
// -->
</script>
<body background="images/Pattern.gif" onload="ajax(page,'scriptoutput')">
...
I thinked, that the problem was in setTimeout, but when I debuged the page, it looked works. Maybe req.open("GET", url, true) opened the ASP page from a cache. Could you help me?
Thank you
L.
1 answers
solution1
0 ACCPTED 2011-12-14 15:08:38
You're right when you say:
Maybe
req.open("GET", url, true)opened the ASP page from a cache
IE will cache the Ajax response if it is via a GET request. Just do something like this (which will make all requests have a unique query string so caching will not be an issue):
req.open("GET", [url, "&_=", new Date().getTime()].join(""), true);
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