Color Palette Generator Using jQuery

By  on  

As I continue to learn jQuery, I think it's important that I begin by porting over scripts I've created using MooTools. One of those scripts is my Color Palette Generator script, which debuted on Eric Wendelin's blog. For those of you that missed it, my script analyzes all of the colors on the page (minus images) and builds a palette of colors. Here it is in some jQuery goodness.

The XHTML

<input type="button" id="get-colors" value="Get Colors" class="button" />
<div id="colors-wrapper"></div>

All we need to begin with is the button that triggers the palette generation and a DIV container that will hold all of the DIVs my jQuery creates.

The CSS

.dcolor		{ height:40px; }
.dtext		{  }
.dwrapper	{ width:200px; float:left; padding:10px; margin:0 20px 20px 0; border:1px solid #ccc; }

These CSS classes act as containers for the text DIV I generate and the color-displaying DIV I generate. Those two DIVs are held in one wrapping DIV.

The jQuery JavaScript

/* when the dom is ready */
$(document).ready(function() {
	$('#get-colors').click(function() {  
		
		//my colors array
		var colors = new Array();
		
		//get all elements
		$('*').each(function() {
			if($(this).css('background-color') && $(this).css('background-color') != 'transparent') { colors.push($(this).css('background-color')); }
			if($(this).css('color')) { colors.push($(this).css('color')); }
			if($(this).css('border-color')) { colors.push($(this).css('border-color')); }
		});
		
		//remove dupes and sort
		colors.sort();
		
		//create a color block for all of them
		jQuery.each(colors,function(it,value) {
			
			if(!$('div[rel=\'' + value + '\']').length)
			{
			
				//inject the wrapper
				var wrapper_id = 'w' + it;
				$('<div class="dwrapper" id="' + wrapper_id + '" rel="' + value + '"> </div>').appendTo('#colors-wrapper');
				
				//inject the color div
				$('<div class="dcolor" style="background-color:' + value + '"> </div>').appendTo('#' + wrapper_id);
				
				//inject text div
				$('<div class="text">' + value + '</div>').appendTo('#' + wrapper_id);
			}
			
		});
		
	});
});

When someone clicks the "Get Colors" button, I grab every element in the DOM and collect its color, background-color, and border-color. Once I've cycled through all of the elements, cycle through all of the colors and display them as DIVs inside my colors-wrapper element. You'll note that I utilized the rel attribute to prevent duplicates.

There's the jQuery Color Palette Generator for you!

Recent Features

  • By
    I&#8217;m an Impostor

    This is the hardest thing I've ever had to write, much less admit to myself.  I've written resignation letters from jobs I've loved, I've ended relationships, I've failed at a host of tasks, and let myself down in my life.  All of those feelings were very...

  • By
    5 More HTML5 APIs You Didn&#8217;t Know Existed

    The HTML5 revolution has provided us some awesome JavaScript and HTML APIs.  Some are APIs we knew we've needed for years, others are cutting edge mobile and desktop helpers.  Regardless of API strength or purpose, anything to help us better do our job is a...

Incredible Demos

  • By
    MooTools FontChecker Plugin

    There's a very interesting piece of code on Google Code called FontAvailable which does a jQuery-based JavaScript check on a string to check whether or not your system has a specific font based upon its output width. I've ported this functionality to MooTools. The MooTools...

  • By
    Assign Anchor IDs Using MooTools 1.2

    One of my favorite uses of the MooTools JavaScript library is the SmoothScroll plugin. I use it on my website, my employer's website, and on many customer websites. The best part about the plugin is that it's so easy to implement. I recently ran...

Discussion

  1. bazztrap

    Can you include this script as part of GreeseMonkey .. that would be great

  2. I just coded up an example in jQuery on how to create div overlays over radio buttons to create a compact, interactive but simple color selector plug-in for jQuery. Feel free to check it out if it would be helpful :)

    http://blarnee.com/wp/jquery-colour-selector-plug-in-with-support-for-graceful-degradation/

  3. chris

    nice work. doesn’t grab the colors out of images included on the page. (this may not be possible with cross-browser javascript; just an observation.)

  4. Would love to see a version of this that converts the rgb results to hex.

  5. bonox

    Nice work, is it possible generate pallete from another web site?

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!