ARTICLE

Image Overlay Using JQuery

Posted by Sapna Articles | JQuery February 08, 2012
In this article we will create an image overlay effect using jQuery. jQuery is already very popular because it is a fast and concise JavaScript library that simplifies HTML document traversing, event handling, animation, and AJAX interactions with very little code. With jQuery you can enjoy a new way of web development and image galleries are the best way to use it effectively.
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Introduction

In this article we will create an image overlay effect using jQuery. jQuery is already very popular because it is a fast and concise JavaScript library that simplifies HTML document traversing, event handling, animation, and AJAX interactions with very little code. With jQuery you can enjoy a new way of web development and image galleries are the best way to use it effectively.

First, we need to define which elements we want to apply the effect to. Now it's time to see how we will make it.

Step 1: First we have to create a web application.

  • Go to Visual Studio 2010.
  • New -> And select the web Application.
  • Give it's a name whatever you want.
  • Click OK.

img1.gif

Step 2: Secondly you have to add a new page to the website.

  •  Go to the Solution Explorer.
  •  Right-click on the Project name.
  •  Select add new item.
  •  Add new web page and give it a name. Here "Akshay.aspx".
  •  Click OK.

img2.gif

img3.gif

Step 3: In this step you add some images to the project; let us see how it will look. Basically, these are the images I used but you can use your own images; whatever you want to do.

img 4.gif

Step 4: In this step we will see how to add style sheet code. Whenever we write the style sheet code you have to care that it will be written inside the <style></style> code and you have to place it inside the head section.

<style type="text/css">
        *
     margin:0
     padding:0
     } 
     img
     border: none
     } 
     body
     text-align: center
     background: #222
     } 
     h2
     color: #333
     font:italic 36px Georgia, serif
     padding: 20px
     border-bottom: dashed 1px #999
     clear: both
     } 
     #content
     width: 100%
     margin: 0px auto
     background: #fff
     text-align: center
     margin-bottom: 50px
     } 
     .row{ /*Container for each row of shirts*/ 
     width: 495px
     margin: 0px auto
     clear:both
     padding: 20px 0
     } 
     .teebox
     overflow: hidden; /*Prevents excess of image from showing*/ 
     position: relative
     margin: 0 10px
     width: 144px; /*Width and height define thumbnail size*/ 
     height: 183px
     float: left
     clear: rightright
     z-index: 0
     } 
     .selected
     overflow: visible; /*Display part of image that not currently visible*/ 
     z-index: 10
     } 
     .teebox img
     left:-84px; /*Use this to center your image when not hovered*/ 
     position: absolute
     } 
     .teebox a{ /*Area that changes to selected class when hovered over*/ 
     display:block
     position: relative
     float: left
     left: 84px; /*Use to line up the overlay image*/ 
     z-index: 1
     } 
     .caption
     color: #2FB5FF
     font:14px Arial
     position: relative
     float: left
     left: 0px
     top: 146px
     padding: 10px
     background: #222
     z-index: 1
     } 
</style>

Step 5: In this step we write the script reference to the aspx page; let us see from where you have to write the script code.

img5.gif

Step 6: Let us see the script code to add inside the <script></script> tags and that will be placed either in the head section or body section as you want.

<script type="text/javascript" src="Scripts/jquery-1.4.1.min.js"></script>

Step 7: In this step we have to write the jQuery code which is given below.

<script type="text/javascript">
        $(document).ready(function () {
            $(".teebox a").mouseover(function () {
                $(this).parent().addClass("selected");
                $(this).find('img').animate({ opacity: "0.0" }, 0); //Hides overlay 
                $(this).parent().find('.caption').hide(); //Hides Caption 
            }).mouseout(function () {
                $(this).parent().removeClass("selected");
                $(this).find('img').animate({ opacity: "1.0" }, 0); //Shows overlay  
                $(this).parent().find('.caption').show(); //Shows Caption 
            });
        }); 
</script>

Step 8: In this code you will see that we have to add some images inside the Akshay.aspx page; now let us see how we will add it.

Body Code:

<body>
     <div id="content"> 
     <div class="row"> 
        <div class="teebox"> 
           <a href="#"><img src="image/overlay.png" /></a><img    src="image/forest_wood.JPG" />
           <div class="caption">$10</div> 
        </div> 
     </div> 
    </div> 
</body>

Step 9: In this step we will see the complete code for the Akshay.aspx page; let us see the code given below.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Akshay.aspx.cs" Inherits="Akshay" %>
<!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">
<head runat="server">
<
title>Image Overlay Using jQuery</title>
<
script type="text/javascript" src="Scripts/jquery-1.4.1.min.js"></script
>
<script type="text/javascript">
        $(document).ready(function () {
            $(".teebox a").mouseover(function () {
                $(this).parent().addClass("selected");
                $(this).find('img').animate({ opacity: "0.0" }, 0); //Hides overlay 
                $(this).parent().find('.caption').hide(); //Hides Caption 
            }).mouseout(function () {
                $(this).parent().removeClass("selected");
                $(this).find('img').animate({ opacity: "1.0" }, 0); //Shows overlay  
                $(this).parent().find('.caption').show(); //Shows Caption 
            });
        }); 
</script>
<
style type="text/css">
        *
     margin:0
     padding:0
     } 
     img
     border: none
     } 
     body
     text-align: center
     background: #222
     } 
     h2
     color: #333
     font:italic 36px Georgia, serif
     padding: 20px
     border-bottom: dashed 1px #999
     clear: both
     } 
     #content
     width: 100%
     margin: 0px auto
     background: #fff
     text-align: center
     margin-bottom: 50px
     } 
     .row{ /*Container for each row of shirts*/ 
     width: 495px
     margin: 0px auto
     clear:both
     padding: 20px 0
     } 
     .teebox
     overflow: hidden; /*Prevents excess of image from showing*/ 
     position: relative
     margin: 0 10px
     width: 144px; /*Width and height define thumbnail size*/ 
     height: 183px
     float: left
     clear: rightright
     z-index: 0
     } 
     .selected
     overflow: visible; /*Display part of image that not currently visible*/ 
     z-index: 10
     } 
     .teebox img
     left:-84px; /*Use this to center your image when not hovered*/ 
     position: absolute
     } 
     .teebox a{ /*Area that changes to selected class when hovered over*/ 
     display:block
     position: relative
     float: left
     left: 84px; /*Use to line up the overlay image*/ 
     z-index: 1
     } 
     .caption
     color: #2FB5FF
     font:14px Arial
     position: relative
     float: left
     left: 0px
     top: 146px
     padding: 10px
     background: #222
     z-index: 1
     } 
</style>
</
head>
<
body>
     <div id="content"> 
     <div class="row"> 
        <div class="teebox"> 
           <a href="#"><img src="image/overlay.png" /></a><img    src="image/forest_wood.JPG" />
           <div class="caption">$10</div> 
        </div> 
     </div> 
    </div> 
</body>

Step 10: In this step we will see the design of the Akshay.aspx page which is given below.

img6.gif

Step 11: In this step we are going to run the Akshay.aspx page by pressing F5.

img7.gif

Now MouseOver the image; you will see:

img8.gif

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