I’m learning JavaScript, so I’m very beginner.
I’m taking an online course, and they show an example code that loads some text from a local text file using AJAX, but it does not work.
This is the code:
<!DOCTYPE html>
<html>
<head>
<script>
function loadXMLDoc() {
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() {
//alert (xmlhttp.status);
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","ajax.txt",true);
xmlhttp.send();
}
</script>
</head>
<body>
<div id="myDiv">
<h2>Let AJAX change this text</h2>
</div>
<button type="button" onclick="loadXMLDoc()">Change Content</button>
</body>
</html>
xmlhttp.status always returns 0 on onreadystatechange (twice), never 200.
I don’t know what is wrong.
Can you help?
TIA