Question

I’m renewing question. For simplify situation I’ve this script in index.php file

<form name="f" action="index.php" method="post">
    <input type="button" name="but" id="but" value="Retrieve">
    <div id="div"></div>
    <input type="submit" name="ok">
</form>



<script type="text/javascript">
document.getElementById("but").onclick = function(){
    var http = false;
    if (window.XMLHttpRequest){
        http = new XMLHttpRequest();
    } else {
        http = new ActiveXObject("Microsoft.XMLHttp");
    }
    if (http){
        http.open("POST","other.php",true);
        http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        http.onreadystatechange = function(){
            if (http.status==200 && http.readyState==4){
                document.getElementById("div").innerHTML = http.responseText;
            }
        };
        http.send(null);
    }
};
document.getElementById("y").onclick = function(){
    alert("okaaay");
};
</script>

And have other.php file with the script below

<?php
echo "<input type='text' name='y' id='y'>";
?>

Ajax script works just nice, but my problem is that when this marked input element is retrieved in index.php page , with second JavaScript code I can’t manipulate it , please help , thanks 🙂

Answer 1

change the code so you set the “y” onclick after the response from the other.php comes back, like so:

 http.onreadystatechange = function(){
        if (http.status==200 && http.readyState==4){
            document.getElementById("div").innerHTML = http.responseText;
            document.getElementById("y").onclick = function(){
              alert("okaaay");
            };
        }
    };

otherwise you’re setting that event handler on an element that does not yet exist 🙂