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Twitter style Ajax Sign In Form with jQuery and CSS3

Created 13 years ago   Views 12133   downloads 2653    Author jqeasy
Twitter style Ajax Sign In Form with jQuery and CSS3
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This is a Twitter style drop down sign in form that uses jQuery and Ajax. The form sends an Ajax request to a server script to verify the username and password. The script also includes JavaScript validation. This script is dependent on the jQuery Form Plugin.

The Markup

First, we'll place the page content inside a container. This example checks an ASP session value to determine if the user has already logged in and shows the appropriate button. The 'href' value for the 'Sign In' button is used in case JavaScript is turned off in the user's browser. The form's 'action' value entered here is the URL where the Ajax request is sent. It's important that you change this to your own server side page containing your login routine. 

<div id="container">

<div id="signbtn">
    <% If Session("loggedin") Then %>
        <a href="logout.asp" class="btnsignout">Sign Out</a>
    <% Else %>
        <a href="signin.asp" class="btnsignin">Sign In</a>
    <% End If %>
</div>

<div id="frmsignin">
    <form method="post" id="signin" action="test.asp">
    <p id="puser">
    <label for="username">Username</label><br />
    <input id="username" name="username" value="" title="username" tabindex="1" type="text" />
    </p>
    <p>
    <label for="password">Password</label><br />
    <input id="password" name="password" value="" title="password" tabindex="2" type="password" />
    </p>
    <p class="submit">
    <input id="submitbtn" value="Sign in" tabindex="3" type="submit" />
    <input id ="remember" name="remember" value="1" tabindex="4" type="checkbox" />
    <label for="remember">Remember me</label>
    </p>
    </form>
    <p id="msg"></p>
</div>

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</div>

The CSS

Here are the styles for the container, signin button, and the form: 

body{
    padding:20px;
    font:12px Verdana, Geneva, sans-serif;
    color:#333;
}
#container {
    width:700px;
    margin:0 auto;
    padding:13px 10px;
    border:1px solid #999;
}
a.btnsignin, a.btnsignout {
    background:#999;
    padding:5px 8px;
    color:#fff;
    text-decoration:none;
    font-weight:bold;
    -webkit-border-radius:4px;
    -moz-border-radius:4px;
    border-radius:4px;
}
a.btnsignin:hover, a.btnsignout:hover {
    background:#666;
}
a.btnsigninon {
    background:#ccc!important;
    color:#666!important;
    outline:none;
}
#frmsignin {
    display:none;
    background-color:#ccc;
    position:absolute;
    top: 59px;
    width:215px;
    padding:12px;
    *margin-top: 5px;
    font-size:11px;
    -moz-border-radius:5px;
    -moz-border-radius-topleft:0;
    -webkit-border-radius:5px;
    -webkit-border-top-left-radius:0;
    border-radius:5px;
    border-top-left-radius:0;
    z-index:100;
}
#frmsignin input[type=text], #frmsignin input[type=password] {
    display:block;
    -moz-border-radius:4px;
    -webkit-border-radius:4px;
    border-radius:4px;
    border:1px solid #666;
    margin:0 0 5px;
    padding:5px;
    width:203px;
}
#frmsignin p {
    margin:0;
}
#frmsignin label {
    font-weight:normal;
}
#submitbtn {
    -moz-border-radius:4px;
    -webkit-border-radius:4px;
    border-radius:4px;
    background-color:#333;
    border:1px solid #fff;
    color:#fff;
    padding:5px 8px;
    margin:0 5px 0 0;
    font-weight:bold;
}
#submitbtn:hover, #submitbtn:focus {
    border:1px solid #000;
    cursor:pointer;
}
.submit {
    padding-top:5px;
}
#msg {
    color:#F00;
}
#msg img {
    margin-bottom:-3px;
}
#msg p {
    margin:5px 0;
}
#msg p:last-child {
    margin-bottom:0px;
}

The JavsScript

jQuery and the jQuery Form Plugin are required. Add the following inside your <head> tag: 

         <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="jquery.form-2.4.0.min.js"></script>
            <script type="text/javascript" src="jqeasy.dropdown.js"></script>

The dropdown.js file contains a function which looks for a return string value of 'OK' from your server side login routine. If it doesn't receive 'OK' then it displays the error message that you define in your login routine. There are more details in the download below.

The dropdown.js file also contains form validation. Username must be 3 - 20 characters (a-z, 0-9, _) and Password must be 6 - 20 characters (a-z, 0-9, !, @, #, $, %, &, *, (, ), _). Of course, you can edit this validation code based on your own requirements.

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