Im trying to build a form which uses AJAX but its failing to execute properly heres the code of my first file:
<html>
<head>
<script language="JavaScript" type="text/javascript">
function ajax_post(){
var hr = new XMLHttpRequest();
var url = "my_parse_file.php";
var fn = document.getElementById("first_name").value;
hr.open("POST", url, true);
hr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
hr.onreadystatechange = function() {
if(hr.readyState == 4 && hr.status == 200) {
var return_data = hr.responseText;
document.getElementById("status").innerHTML = return_data;
}
}
hr.send(fn);
document.getElementById("status").innerHTML = "processing...";
}
</script>
</head>
<body>
<h2>Ajax Post to PHP and Get Return Data</h2>
Todo: <input id="first_name" name="first_name" type="text" />
<br /><br />
<input name="myBtn" type="submit" value="Submit Data" onClick="javascript:ajax_post();">
<br /><br />
<div id="status"></div>
</body>
</html>
and heres the second:
<?php
echo $_POST['firstname'];
?>
All it does is show the "processing..." and then it goes blank...any way around this?
I think it's because you're not passing a key value pair.
hr.send('firstname=' + encodeURIComponent(fn));