my message box project is not working so please help me.

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My project code is this
?>
<html>
<head>
<title>Chat Box</title>
<script>
function submitChat(){
if (form1.uname.value= = ' '|| form1.msg.value = = ' '){
alert('ALL FIELDS ARE MANDATORY'!!!');
return:
}
}
var uname = form1.uname.value;
var msg = form1.msg.value;
var xmlhttp = new XMLHttpRequest();

xmlhttp.onreadystatechange = function(){
if(xmlhttp.readyState= =4&&xmlhttp.status= =200){
document.getElementById ('chatlogs').innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open('GET','insert.php?uname='+uname+'&msg='+msg,true);
xmlhttp.send();

}
</script>

</head>
<body>
<form name="form1">
Enter Your Chatname: <input type ="text" name="uname"/>

Your Message:

<textarea name="msg"></textarea>

Send

LOADING CHATLOGS PLEASE WAIT....

</body>

Posted 20-Oct-14 9:31am

Member 11167687

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-10-20T09:52:00

One apparent bug is this: your <script> element is put in the <head> element. This is perfectly fine, but it means it is never executed by itself. Something will be executed only if you call some function from outside. It can be done from some event handler in HTML, or it can be done from the script which is a child of the <body> element.

Also, when asking questions, you need to post comprehensive and correctly formatted code samples. You sample is not like that. It starts with "?>", tags are unbalanced, and so on.

—SA