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Asked: 2026-06-05T21:11:22+00:00

Assume that I have 2 .php files : index.php and ajax.php This is index.php:

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Assume that I have 2 .php files : index.php and ajax.php

This is index.php:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<META http-equiv=Content-Type content="text/html; charset=utf-8">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Website title</title>
<link href="css.css" rel="stylesheet" type="text/css" />
<script type="text/javascript"  src="jquery.js"></script>

</head>
<body>


<script type="text/javascript">
    ajax_register = function(){
        $.ajax({
            type: "post",
            url: 'ajax.php',
            dataType: 'json',
            data: "act=register",
            success: function(data){
                //var json = $.parseJSON(data);
                //alert(json);
                alert(data.result);

            },
            error: function(e){
                alert("Error : " + e);
            }
        });
    };

</script>

<form name="myForm" id="myForm" method="post">
    Your name :
    <input type="text" name="name" id="name" /> 
    <a href="javascript:void(0)" onclick="ajax_register()">Register</a>
</form>

</body>
</html>

And this is ajax.php:

<?php
$result = array("result"=>"Success");
echo json_encode($result);
exit;

But I always have “Error” alert dialog.

Look in Firebug, I see that the response data contains all html elements instead of only json data.

Try to send header as “json” by edit ajax.php :

<?php
header("Content-type: application/json");
    $result = array("result"=>"Success");
    echo json_encode($result);
exit;

But it doesnt work. The response header is always : Content-Type:text/html;

UPDATE

This is what ajax.php response:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">

    <META http-equiv=Content-Type content="text/html; charset=utf-8">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Website title</title>
    <link href="css.css" rel="stylesheet" type="text/css" />
    <script type="text/javascript"  src="jquery.js"></script>

    </head>
    <body>


    <script type="text/javascript">
        ajax_register = function(){
            $.ajax({
                type: "post",
                url: 'ajax.php',
                dataType: 'json',
                data: "act=register",
                success: function(data){
                    //var json = $.parseJSON(data);
                    //alert(json);
                    alert(data.result);

                },
                error: function(e){
                    alert("Error : " + e);
                }
            });
        };

    </script>

    <form name="myForm" id="myForm" method="post">
        Your name :
        <input type="text" name="name" id="name" /> 
        <a href="javascript:void(0)" onclick="ajax_register()">Register</a>
    </form>
{"result":"Success"}

What do I wrong here?

Thanks for your time!

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1 Answer

  1. Editorial Team

    I only changed this LOC <script type="text/javascript" src="jquery.js"></script> to 

    <script type="text/javascript"  src="http://code.jquery.com/jquery-latest.js"></script>

    to check your code and its all working fine at my end ..check JS errors may be a case of JS conflicts. (Alerting Success for me). Let me know if problem still persist

    index.php CODE —

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<META http-equiv=Content-Type content="text/html; charset=utf-8">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Website title</title>
<link href="css.css" rel="stylesheet" type="text/css" />
<script type="text/javascript"  src="http://code.jquery.com/jquery-latest.js"></script>

</head>
<body>


<script type="text/javascript">
    ajax_register = function(){
        $.ajax({
            type: "post",
            url: 'ajax.php',
            dataType: 'json',
            data: "act=register",
            success: function(data){
                //var json = $.parseJSON(data);
                //alert(json);
                alert(data.result);

            },
            error: function(e){
                alert("Error : " + e);
            }
        });
    };

</script>

<form name="myForm" id="myForm" method="post">
    Your name :
    <input type="text" name="name" id="name" /> 
    <a href="javascript:void(0)" onclick="ajax_register()">Register</a>
</form>

</body>
</html>

    ajax.php CODE —

    <?php
$result = array("result"=>"Success");
echo json_encode($result);
exit;

    Alerting Success on clicking at register.

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