Notepad:Ajax: Difference between revisions
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AJAX Howto |
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Determine AJAX | Determine AJAX | ||
<code> | <code> | ||
var xmlhttp = null; | var xmlhttp = null; | ||
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Send request | Send request | ||
<code> | <code> | ||
xmlhttp.open('GET', url, true); | xmlhttp.open('GET', url, true); | ||
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Define Callback | Define Callback | ||
<code> | <code> | ||
xmlhttp.onreadystatechange = function() { | xmlhttp.onreadystatechange = function() { | ||
Revision as of 04:50, 20 February 2007
From Yahoo AJAX Howto
Determine AJAX
var xmlhttp = null;
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
if ( typeof xmlhttp.overrideMimeType != 'undefined') {
xmlhttp.overrideMimeType('text/xml');
}
} else if (window.ActiveXObject) {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} else {
alert('Perhaps your browser does not support xmlhttprequests?');
}
Send request
xmlhttp.open('GET', url, true);
xmlhttp.send(null);
Define Callback
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
// do something with the results
} else {
// wait for the call to complete
}
