Created
January 12, 2013 03:18
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A simple example of jQuery event binding (in this case, click events on some divs). For my brother.
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width"> | |
<style> | |
div[class^='block-'] { | |
height: 10em; | |
width: 10em; | |
position: absolute; | |
-webkit-box-shadow: 1px 1px 4px rgba(0,0,0,0.25); | |
} | |
.block-a { | |
background-color: green; | |
} | |
.block-b { | |
background-color: blue; | |
} | |
.block-c { | |
background-color: orange; | |
} | |
.faded { | |
opacity: 0.5; | |
z-index: -1; | |
} | |
</style> | |
</head> | |
<body> | |
<div class="block-a"></div> | |
<div class="block-a"></div> | |
<div class="block-a"></div> | |
<div class="block-a"></div> | |
<div class="block-b"></div> | |
<div class="block-c"></div> | |
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> | |
<script> | |
// At startup (really the JQuery DOM-ready event) bind all of the event handlers | |
$(function() { | |
// get a reference to all of the blocks, so we can do stuff to them | |
var blocks = $('div[class^=block-]') | |
// distrubute the blocks to random positions | |
blocks.each(function() { | |
var x = Math.random() * 320, | |
y = Math.random() * 320 | |
$(this).css({top: x, left: y}) | |
}) | |
// bind an event handler to all blocks | |
blocks.on('click', function(e) { | |
console.log('clicked a block.', ['block class was', $(this).attr('class')].join(' ')) | |
// all boxes remove the faded class | |
// this has the effect of making the orange box a reset, since we won't bind anything else to | |
blocks.removeClass('faded') | |
}) | |
// bind an event handler to our blue blocks only | |
$('.block-b').on('click', function(e) { | |
// make the green blocks fade into the background | |
$('.block-a').addClass('faded') | |
}) | |
// bind another event handler to our green blocks | |
$('.block-a').on('click', function(e) { | |
$('.block-b').addClass('faded') | |
}) | |
}) | |
</script> | |
</body> | |
</html> |
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