Javascript 2 dimensional array populates CSS button background-color

**nsath** · 04-27-2012 03:37 PM

I'm creating something similar to the paint box that you get in paint for a website with similar functionality. double click on a specific color and it gives you various shades. the various shades along with the alt tags are displayed in another div with z-index 1./ The way I setout to do this is using a 2 dimensional array to store the color hex and alt values but I'm lost as to how I can populate the button's background color from the array and whether to use javascript, JQuery, or JSON. Markup follows:

CSS Style

<style type="text/css">
#colorShadesContainer{height:518px; width:95px; border:1px solid #D8D8D8;}
#colorShades{margin-left:2px; margin-top:2px; height:512px; width:89px; position:relative; border:1px solid #D8D8D8;}
#shadeblockOne{margin-left:1.5px; margin-top:2px; position:absolute; height:15px; width:85px;}
input.shadeOne{height:15px; width:85px;}
</style>

HTML

<div id="colorShadesContainer">
<div id="colorShades">
<div id="shadeblockOne"><input type="button" class="shadeOne" value="" title="" /></div>

JavaScript

var RedTonesHtmlHex = new Array(30)
for (r=0; r < 30; r++)
RedTonesHtmlHex[r] = new Array(2)

RedTonesHtmlHex[0] = new Array(2)
RedTonesHtmlHex[0][0] = "#080000"
RedTonesHtmlHex[0][1] = "lightRed"

I just want to know how to populate these value into the button background colors. Any solutions, ideas, or samples much appreciated

**Padonak** · 04-28-2012 02:16 PM

is this what you want?

Code:

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>...</title>
<head>
<style type="text/css">
#colorShadesContainer{height:518px; width:95px; border:1px solid #D8D8D8;}
#colorShades{margin-left:2px; margin-top:2px; height:512px; width:89px; position:relative; border:1px solid #D8D8D8;}
#shadeblockOne{margin-left:1.5px; margin-top:2px; position:absolute; height:15px; width:85px;}
input.shadeOne{height:15px; width:85px;}
</style>
</head>
<body>
<div id="colorShadesContainer">
<div id="colorShades">
<div id="shadeblockOne"><input type="button" class="shadeOne" value="" title="" /></div>
</div>
</div>
<a href="#null" onclick="passToTheButton(0)">lightRed</a>
<br /><br />
<a href="#null" onclick="passToTheButton(1)">deadlyRed</a>
<script type="text/javascript">
var RedTonesHtmlHex=[
['lightRed','#ff0000'],
['deadlyRed','#cd141a']
// etc.
];

function passToTheButton(n){
var theButton=document.getElementById('shadeblockOne').getElementsByTagName('input')[0];
theButton.style.backgroundColor=RedTonesHtmlHex[n][1];
theButton.value=RedTonesHtmlHex[n][0];
}
</script>
</body>
</html>

**nsath** · 04-28-2012 02:33 PM

yup this is what i was trying to do but whereas you have array values of lightRed and deadlyRed populating within the button itself, I was tryin to get place it in the following way alt="Light Red" and "Deadly Red" I'm not too sure about as an alt value but one idea was to create a variable called alt

Thank You

**Padonak** · 04-28-2012 04:33 PM

alt is for images - this is a short description for a user to see in case images are off

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