Do you need to integrate an AJAX Login Form into a Modal Box? This tutorial will show you how you can do that using the powerful library jQuery. The modal box that I’ve chosen is a jQuery Plugin written by Eric Martin.
Let’s start making the html file where the modal box is triggered:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Modal Ajax Login Form</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="javascript/jquery.simplemodal.js"></script>
<script type="text/javascript" src="javascript/init.js"></script>
<link type='text/css' href='style/stylesheet.css' rel='stylesheet' media='screen' />
<link type='text/css' href='style/basic.css' rel='stylesheet' media='screen' />
</head>
<body>
Click the login link to launch the modal box:<br />
<span style="font-size: 15px;">
<a id="login_link" href="#">LOGIN</a> | MEMBERS AREA</a>
</span>
<div id="login_form" style='display:none'>
<div id="status" align="left" style="margin-top: 20px; width: 310px;">
<center><h1><img src="images/key.png" align="absmiddle"> LOGIN</h1>
<div id="login_response"><!-- spanner --></div> </center>
<form id="login" action="javascript:alert('success!');">
<input type="hidden" name="action" value="user_login">
<input type="hidden" name="module" value="login">
<label>E-Mail</label><input type="text" name="email"><br />
<label>Password</label><input type="password" name="password"><br />
<label> </label><input value="Login" name="Login" id="submit" class="big" type="submit" />
<div id="ajax_loading">
<img align="absmiddle" src="images/spinner.gif"> Processing...
</div>
</form>
</div>
</div>
</body>
</html>
In the HEAD part of the page I’ve included the JQuery library, the modal box and the AJAX Login script. When the “LOGIN” link is clicked (id=”login_link”) the modal box is triggered and the login form is shown (initially it’s hidden).
Here’s the content of init.js (I will explain you how it works below):
// Preload Images
img1 = new Image(16, 16);
img1.src="images/spinner.gif";
img2 = new Image(220, 19);
img2.src="images/ajax-loader.gif";
// When DOM is ready
$(document).ready(function(){
// Launch MODAL BOX if the Login Link is clicked
$("#login_link").click(function(){
$('#login_form').modal();
});
// When the form is submitted
$("#status > form").submit(function(){
// Hide 'Submit' Button
$('#submit').hide();
// Show Gif Spinning Rotator
$('#ajax_loading').show();
// 'this' refers to the current submitted form
var str = $(this).serialize();
// -- Start AJAX Call --
$.ajax({
type: "POST",
url: "do-login.php", // Send the login info to this page
data: str,
success: function(msg){
$("#status").ajaxComplete(function(event, request, settings){
// Show 'Submit' Button
$('#submit').show();
// Hide Gif Spinning Rotator
$('#ajax_loading').hide();
if(msg == 'OK') // LOGIN OK?
{
var login_response = '<div id="logged_in">' +
'<div style="width: 350px; float: left; margin-left: 70px;">' +
'<div style="width: 40px; float: left;">' +
'<img style="margin: 10px 0px 10px 0px;" align="absmiddle" src="images/ajax-loader.gif">' +
'</div>' +
'<div style="margin: 10px 0px 0px 10px; float: right; width: 300px;">'+
"You are successfully logged in! <br /> Please wait while you're redirected...</div></div>";
$('a.modalCloseImg').hide();
$('#simplemodal-container').css("width","500px");
$('#simplemodal-container').css("height","120px");
$(this).html(login_response); // Refers to 'status'
// After 3 seconds redirect the
setTimeout('go_to_private_page()', 3000);
}
else // ERROR?
{
var login_response = msg;
$('#login_response').html(login_response);
}
});
}
});
// -- End AJAX Call --
return false;
}); // end submit event
});
function go_to_private_page()
{
window.location = 'private.php'; // Members Area
}First, the GIFs are preloaded. This way they will load instantly when it’s the case:
// Preload Images img1 = new Image(16, 16); img1.src="images/spinner.gif"; img2 = new Image(220, 19); img2.src="images/ajax-loader.gif";
When DOM is ready (all page elements are loaded, including graphics) the Modal Box is launched when the user clicks on the “Login” link:
// Launch MODAL BOX if the Login Link is clicked
$("#login_link").click(function(){
$('#login_form').modal();
});When the form is submitted, the “Submit” button is hidden and the GIF spinning rotator/loader is shown:
// When the form is submitted
$("#status > form").submit(function(){
// Hide 'Submit' Button
$('#submit').hide();
// Show Gif Spinning Rotator
$('#ajax_loading').show();
// ..................
});The form data is serialized:
// 'this' refers to the current submitted form var str = $(this).serialize();
Further on, the data is sent to “do-login.php” using AJAX. If ‘OK’ is returned then a confirmation message will be shown to the user before redirecting him to the private page. Notice how I used jQuery’s css(name, value) function to change the width and height of the modal box:
var login_response = '<div id="logged_in">' +
'<div style="width: 350px; float: left; margin-left: 70px;">' +
'<div style="width: 40px; float: left;">' +
'<img style="margin: 10px 0px 10px 0px;" align="absmiddle" src="images/ajax-loader.gif">' +
'</div>' +
'<div style="margin: 10px 0px 0px 10px; float: right; width: 300px;">'+
"You are successfully logged in! <br /> Please wait while you're redirected...</div></div>";
$('a.modalCloseImg').hide();
$('#simplemodal-container').css("width","500px");
$('#simplemodal-container').css("height","120px");
$(this).html(login_response); // Refers to 'status'
// After 3 seconds redirect the
setTimeout('go_to_private_page()', 3000);If there are errors (incorrect login) they will be shown above the form (“login_response” DIV).
var login_response = msg;
$('#login_response').html(login_response);The design is fully customizable using CSS. Consider downloading the ZIP archive which contains all the files you need.
DEMO
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E-Mail: [email protected]
Password: demo123
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UPDATE: Thank you all for reporting the bugs within the download archive. I made the corrections and now there shouldn’t be any confusion about it. I hope most of the people figured out the issues and corrected them.