Why use JPEG with polyclip.js instead of PNG? Because PNG images can’t be as small as JPEG images when you’re dealing with photographic images, and you know how an image’s file size can affect a page’s loading time. What the script does is cut points on the image using x and y values provided by the user. If you know how to create an image map then using polyclip.js should be easy for you to use.

This plugin’s practical value can be subject for debate when you’re dealing with a lot of images but if it’s only for a handful of images, it can be a huge byte-saver.

The polyclip.js is supported by most browsers, including IE7 and 8 but it’s going to require the Excanvas JavaScript library which polyfills canvas using VML for it to function properly. It weighs in at only 2kb but for IE7 and 8, there’s going to be an additional 11kb.

You can download the latest version of polyclip.js over at GitHub. To know more about this plugin/library, you can read about it here.

Incoming search terms for the article:

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One of the coolest things about jQuery is that you can experiment with it, like with this animated robot. Here is a sample of how one can do this, based on Anthony Calzadilla’s design.

It’s easy to modify and loads fast, with the end product similar to Flash designs but with more advantages. Web designers and developers are sure to find this tutorial inspiring!

Click on the above image to see the demo.

Below are the codes for this awesome animation.

Markup

<div id="wrapper">

<div id="cloud-01">

<div id="cloud-02">

<div id="mountains-03">

<div id="ground">

<div id="full-robot">

<div id="branding"><h1>Robot Head.</h1></div>

<div id="content"><p> Robot Chest.</p></div>

<div id="sec-content"><p> Robot Pelvis.</p></div>

<div id="footer"><p> Robot Legs.</p></div>

</div>

</div>

</div>

</div>

</div>

</div>

CSS Style

h1, p { position: absolute; left: -9999px; }

div {position: relative;}

#wrapper { background: #bedfe4 url(../images/sun.png) no-repeat left -30px; border: 5px solid #402309;}

#cloud-01 { background: url(../images/clouds-01.png) no-repeat left -100px; }                                                         

#cloud-02 {                  background: url(../images/clouds-02.png) no-repeat left top; }

#mountains-03 { background: url(../images/mountain-03.png) no-repeat left bottom; }

#ground { background: url(../images/ground-05.png) no-repeat left bottom; }

#full-robot { width: 271px; }

#branding {
                    background: url(../images/robot-head.png) no-repeat center top;
                    width: 271px;
                    height: 253px;
                    z-index: 4;
                    }

#content {
                    background: url(../images/robot-torso.png) no-repeat center top;
                    width: 271px;
                    height: 164px;
                    z-index: 3;
                    margin-top: -65px;
                    }

#sec-content {
                    background: url(../images/robot-hips.png) no-repeat center top;
                    width: 271px;
                    height: 124px;
                    z-index: 2;
                    margin-top: -90px;
                    }

#footer {
                    background: url('../images/robot-legs.png') no-repeat center top;
                    width: 271px;
                    height: 244px;
                    z-index: 1;
                    margin-top: -90px;
                    }

jQuery Javascript

$(document).ready(function(){
$('#cloud-01').css({backgroundPosition: '0 -80px'});
$('#cloud-02').css({backgroundPosition: '0 -30px'});
$('#mountains-03').css({backgroundPosition: '0 50px'});
$('#trees-04').css({backgroundPosition: '0 50px'});
$('#ground').css({backgroundPosition: 'left bottom'});
$('#branding').css({backgroundPosition: 'center 0'});
$('#content').css({backgroundPosition: 'center 0'});
$('#sec-content').css({backgroundPosition: 'center 0'});
$('#footer').css({backgroundPosition: 'center 0'});
$('#wrapper').css({overflow: "hidden"});

                    $('#klicker').click(function(){
                                         $('#cloud-01').animate({backgroundPosition: '(-500px -80px)'}, 20000);
                                         $('#cloud-02').animate({backgroundPosition: '(-625px -30px)'}, 20000);
                                         $('#mountains-03').animate({backgroundPosition: '(-2500px 50px)'}, 20000);
                                         $('#ground').animate({backgroundPosition: '(-5000px bottom)'}, 20000);

                    startHim();

                    $("#full-robot").animate({left:"50%",marginLeft:"-150px"}, 2000);
                    setTimeout("leaveScreen()",15000);
                    });

});

var num = 1;

function startHim(){
                    num++;
                    $("#sec-content").animate({top:"-=5px"},150).animate({top:"+=5px"},150);
                    $("#content,#branding").animate({top:"-="+num+"px"},150).animate({top:"+="+num+"px"},150);
                    if(num<4){
                                         setTimeout("startHim()",300);
                    } else {
                                         setTimeout("bounceHim()",300);
                    }
}

function bounceHim(){
                    $("#sec-content,#branding").animate({top:"-=4px"},150).animate({top:"+=4px"},150);
                                         $("#content").animate({top:"-=8px"},150).animate({top:"+=8px"},150);
                    setTimeout("bounceHim()",300);
}

function leaveScreen(){
                    $("#full-robot").animate({left:"100%",marginLeft:"0px"}, 2000);
}

Incoming search terms for the article:

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You can check out the full tutorial HERE.

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Download the ZIP FILE.

HTML (star_rating.html)

<!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>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>JQuery-Star Comment Rating</title>

<script type="text/javascript" src="js/jquery/jquery-1.3.2.min.js"></script>

<script type="text/javascript" src="js/star_rating.js"></script>

<style type="text/css">

#rating_cont { background: #1E1D1C url(images/rating_background.jpg) top left no-repeat; border: 1px solid #F9BA0D; width: 140px; height: 23px; text-align: left; margin-left: 6px;}

#rating_on { background: url(images/rating_onbackground.jpg) top left no-repeat; width: 0px; height: 21px; position: relative; z-index: 50; top: -21px; }

#rated { display: none; width: 138px; padding: 3px 0px 3px 2px; height: 23px; background-color: #1E1D1C; height: 17px;font-size: 11px;color: #FFC910;}

#rated div { display: block; float: left; }

#rating { font-size: 11px; font-family: Arial, Helvetica, sans-serif; color: #FFC910; padding-left: 3px; width: 22px; }

#small_stars { height: 11px; width: 69px; background-image: url(images/stars_small_sprite.jpg); background-position: 0px -11px; font-size:1px; line-height: 11px; margin-top:3px; }

#rate_edit { line-height: 17px; font-size: 11px; font-family: Arial, Helvetica, sans-serif; color: #FFF; padding-left: 9px; cursor: pointer; }

#rate_edit:hover { text-decoration: underline; }

#rating_btns { position: relative; z-index: 100; width: 140px; height: 21px;}

#rating_btns ul, #rating_btns li { padding: 0; margin: 0; }

#rating_btns li { float: left; width: 14px; height: 21px; display: block; font-size: 1px; cursor: pointer; color: #1E1D1C;

}

</style>

</head>

<body>

<div id="rating_cont">

<div id="rating_btns">

<ul>

<li>0.5</li>

<li>1.0</li>

<li>1.5</li>

<li>2.0</li>

<li>2.5</li>

<li>3.0</li>

<li>3.5</li>

<li>4.0</li>

<li>4.5</li>

<li>5.0</li>

</ul>

</div>

<div id="rating_on" >&nbsp;</div>

<div id="rated">

<div id="rating" style="height: 17px; line-height: 17px;">not rated</div>

<div> &#8211; &nbsp;</div>

<div id="small_stars">&nbsp;</div>

<div id="rate_edit">edit</div>

</div>

</div>

<input type="hidden" id="rating_output" name="rating_output" />

</body>

</html>

jQuery/Jvascript (star_rating.js)

/*

* Written by eligeske

* downloaded from eligeske.com

* have fun. nerd.

*/

$(document).ready(function(){

// hover

$('#rating_btns li').hover(function(){

$rating = $(this).text();

$('#rating_on').css('width', rateWidth($rating));

});

// mouseout

$('#rating_btns li').mouseout(function(){

$rating = $('#rating').text();

if($rating == "not rated"){

$('#rating_on').css('width', "0px");

}

else{

$('#rating_on').css('width', rateWidth($rating));

}

});

//click

$('#rating_btns li').click(function(){

$rating = $(this).text();

$('#rating').text($rating);

$('#rating_output').val($rating);

$pos = starSprite($rating);

$('#small_stars').css('background-position', "0px " + $pos );

$('#rating_btns').hide();

$('#rating_on').hide();

$('#rated').fadeIn();

});

//edit

$('#rate_edit').click(function(){

$('#rated').hide();

$('#rating_btns').fadeIn();

$('#rating_on').fadeIn();

});

function rateWidth($rating){

$rating = parseFloat($rating);

switch ($rating){

case 0.5: $width = "14px"; break;

case 1.0: $width = "28px"; break;

case 1.5: $width = "42px"; break;

case 2.0: $width = "56px"; break;

case 2.5: $width = "70px"; break;

case 3.0: $width = "84px"; break;

case 3.5: $width = "98px"; break;

case 4.0: $width = "112px"; break;

case 4.5: $width = "126px"; break;

case 5.0: $width = "140px"; break;

default: $width = "84px";

}

return $width;

}

function starSprite($rating){

$rating = parseFloat($rating);

switch ($rating){

case 0.5: $pos = "-11px"; break;

case 1.0: $pos = "-22px"; break;

case 1.5: $pos = "-33px"; break;

case 2.0: $pos = "-44px"; break;

case 2.5: $pos = "-55px"; break;

case 3.0: $pos = "-66px"; break;

case 3.5: $pos = "-77px"; break;

case 4.0: $pos = "-88px"; break;

case 4.5: $pos = "-99px"; break;

case 5.0: $pos = "-110px"; break;

default: $pos = "-77px";

}

return $pos;

}

});

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Check out the live demo here or take a look at its code here.

First thing you need to do is reference the necessary jQuery file and plugin by inserting this into your code:

You can use this plugin for the textbox element; all you need to do is to set the case which you want to implement by setting the “caseValue” property to upper, lower, title, or pascal. (NOTE: All values are in lower case).

Your code should then look like one of the following:

Upper case:

Lower case:

Title case: Only the very first letter of the entire text is capitalized.

Pascal case: Every first letter of the word is capitalized.

Below is the code for the plugin, which takes advantage of the keypress and blur method:

Hope you enjoy trying this plugin out on your site. Cheers!

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Click on the above image for the demo.

Steps:

1. Get a copy of jquery.js
2. Paste the code below onto your web page. What the code will do is look for the target images (.item img) and then generate a grayscale version.

Be sure to set your target image (eg: .post-img, img, .gallery img, etc.)

TIP: You may change the transition speed by adjusting the highlighted number in the code (ie. 1000 = 1 second)

Provided that JavaScript is enabled, this will work on any browser that supports HTML5 such as Safari, Chrome, and Firefox. Otherwise, the image will revert to its original colored state.

Developer’s Note: if it doesn’t work with Firefox and Chrome locally, you need to put the HTML file on a web server.

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How to Create a Slideshow Plugin with jQuery – This slideshow makes use of a jQuery plugin called Powerslide.

Elastic Image Slideshow with Thumbnail Preview – Here’s a really cool slideshow that automatically adjusts according to the size of the browser window (read: responsive web pages) with the little help of JavaScript and CSS.

Bubble Slideshow Effect with jQuery – This very easy-to-use and customizable slideshow will give your site visitors a unique and interesting way of viewing your image gallery.

Fullscreen Slideshow with HTML5 Audio and jQuery – This particular slideshow uses the Vegas jQuery plugin, the jQuery easing plugin, and the jScrollPane. The tutorial also includes the addition of sound to add a little bit of atmosphere with the help of the HTML5 audio element and a JavaScript audio library called Buzz.

Photoflip slideshow effect with jQuery – Here’s a slideshow that uses both jQuery and CSS3 to flip through a stack of images. It’s set on automatic but if you’d like the images to flip only with mouse clicks, the tutorial also provides you a way to be able to do that too.

Flickr-powered Slideshow – This particular slideshow plugin uses Flickr’s APIs and YQL to fetch photosets from your Flickr account.

Flickrgallery – You just got to hand it to the guys at Flickr for developing its own slideshow gallery plugins, which is why it’s such a huge hit among hobbyists and professional photographers alike.  (Click here for demo).

Gallerific – Here’s an awesome plugin that can handle high volumes of photos while conserving bandwidth. It will showcase the images with minor modifications or design adjustments (Click here for demo).

s3Slider jQuery Plugin – If you want to place one of your images in the header section of your page or you want your images to include text that will link to internal pages then you might want to check out this plugin. (Click here for demo).

Supersized – If you want to immediately showcase your photo gallery by making it fill out almost the whole screen then you might want to try out this plugin (click here for demo). One cool aspect of this plugin is that it maintains the images’ dimension ratio.

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Below are the steps on how to achieve this effect.

1. XHTML

The markup is pretty much straight forward and has few divs and images.

<div id="main">

<div id="iphone">

<div id="webpage">

<img src="img/webpage.png" width="499" height="283" alt="Web Page" />

<div id="retina"></div>

</div>

</div>

</div>

This is a simulation of what you will achieve with the above code.

2. CSS

This is the styling for the retina divs, iPhone and webpage effect.

Styles.css

#iphone{
        /* The iphone frame div */
        width:750px;
        height:400px;
        background:url('img/iphone_4G.png') no-repeat center center;
}

#webpage{
        /* Contains the webpage screenshot */
        width:499px;
        height:283px;
        position:absolute;
        top:50%;
        left:50%;
        margin:-141px 0 0 -249px;
}

#retina{
        /* The Retina effect */
        background:url('img/webpage.png') no-repeat center center white;
        border:2px solid white;

        /* Positioned absolutely, so we can move it around */
        position:absolute;
        height:180px;
        width:180px;

        /* Hidden by default */
        display:none;

        /* A blank cursor, notice the default fallback */
        cursor:url('img/blank.cur'),default;

        /* CSS3 Box Shadow */
        -moz-box-shadow:0 0 5px #777, 0 0 10px #aaa inset;
        -webkit-box-shadow:0 0 5px #777;
        box-shadow:0 0 5px #777, 0 0 10px #aaa inset;

        /* CSS3 rounded corners */
        -moz-border-radius:90px;
        -webkit-border-radius:90px;
        border-radius:90px;
}

#retina.chrome{
        /* A special chrome version of the cursor */
        cursor:url('img/blank_google_chrome.cur'),default;
}

#main{
        /* The main div */
        margin:40px auto;
        position:relative;
        width:750px;
}

3. jQuery

script.js

$(document).ready(function(){

        /* This code is executed on the document ready event */

        var left       = 0,
               top            = 0,
               sizes   = { retina: { width:190, height:190 },
                               webpage:{ width:500, height:283 } },
               webpage = $('#webpage'),
               offset  = { left: webpage.offset().left, top: webpage.offset().top },
               retina  = $('#retina');

        if(navigator.userAgent.indexOf('Chrome')!=-1)
        {
               /*      Applying a special chrome curosor,
                       as it fails to render completely blank curosrs. */

               retina.addClass('chrome');
        }

        webpage.mousemove(function(e){

               left = (e.pageX-offset.left);
               top = (e.pageY-offset.top);

               if(retina.is(':not(:animated):hidden')){
                       /* Fixes a bug where the retina div is not shown */
                       webpage.trigger('mouseenter');
               }

               if(left<0 || top<0 || left > sizes.webpage.width ||
                       top > sizes.webpage.height)
               {
                       /*      If we are out of the bondaries of the
                               webpage screenshot, hide the retina div */

                       if(!retina.is(':animated')){
                               webpage.trigger('mouseleave');
                       }
                       return false;
               }

               /*      Moving the retina div with the mouse
                       (and scrolling the background) */

               retina.css({
                       left                           : left - sizes.retina.width/2,
                       top                                   : top - sizes.retina.height/2,
                       backgroundPosition     : '-'+(1.6*left)+'px -'+(1.35*top)+'px'
               });

        }).mouseleave(function(){
               retina.stop(true,true).fadeOut('fast');
        }).mouseenter(function(){
               retina.stop(true,true).fadeIn('fast');
        });
});

Angelov also provided a zip file which you may download here.

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Let’s being with the HTML markup:

As you can see, the code is pretty much straightforward. We have the input element “button” to create the sticky notes, and a container <div> with an id (“board”) in which to place them. This also includes the reference tags to the CSS style sheets and the JavaScript file.

The HTML for our posticks will be as follows:

Each postick <div> will have a subdiv called “toolbar” so we will have a place for us to put a close (x) button in. We’ll also have another subdiv called “editable” with an HTML5 attribute “contenteditable”; this will contain the text that the user will input in the sticky note.

And now for the CSS part, which is a lengthy one:

Like the HTML code, the CSS code is also straightforward. We first reset the body tag, then we stylize the button (input) that creates the posticks, and then stylize the postick itself and the elements inside it (i.e. the delete button, toolbar, etc.).

And now for the JavaScript:

I believe the JavaScript is pretty much self-explanatory since it also already contains some notes about each part of the code, and especially if you already know enough about JavaScript.

Anyway, you can check the demo of the tutorial here. Also, you can get the full source code (.zip) here. I hope you enjoy creating and using your posticks!

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Here’s what you will need: jQuery, image and the ImageLens plugin – jquery.imagelens.js.

Check out the demo and the download.

Include jQuery and jQuery.imagelens.js in your page:

<script src=”jquery.js” type=”text/javascript”></script>

<script src=”jquery.imageLens.js” type=”text/javascript”></script>

Use ImageLens for default image lens. This will calculate the image and the zoom function.

$("#img_01").imageLens();

You can specify the image source if you have a different thumbnail image from the zoomed image.

$("#img_03").imageLens({ imageSrc: "sample01.jpg" });                                  

Customizing the lens size:

$("#img_02").imageLens({ lensSize: 200 });

You can also adjust the attributes in the lens like border size and border color.

$("#img_04").imageLens({ borderSize: 8, borderColor: "#06f" });

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