Created
October 7, 2012 08:31
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JavaScript: Method #2: Randomize elements on a page
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| <!DOCTYPE html> | |
| <html dir="ltr" lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title> Randomise Element's Position </title> | |
| <style type="text/css" media="screen"> | |
| .randomizeme { | |
| position:absolute; | |
| display:block; | |
| width:50px; | |
| height:50px; | |
| } | |
| #id1 { | |
| background: red; | |
| } | |
| #id2 { | |
| background: green; | |
| } | |
| #id3 { | |
| background: lightblue; | |
| } | |
| #id4 { | |
| background: magenta; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="id1" class='randomizeme'> Foo </div> | |
| <div id="id2" class='randomizeme'> Bar </div> | |
| <div id="id3" class='randomizeme'> Boo </div> | |
| <div id="id4" class='randomizeme'> Far </div> | |
| <script type="text/javascript" charset="utf-8"> // {{ | |
| window.onload = function() { | |
| var elements = document.querySelectorAll(".randomizeme"); | |
| for (var i in elements) { | |
| var top = Math.floor(Math.random() * 100); | |
| var left = Math.floor(Math.random() * 100); | |
| var e = elements[i]; | |
| e.style.top = top + '%'; | |
| e.style.left = left + '%'; | |
| if (top > 50) { | |
| console.log(e); | |
| e.style.marginTop = (-1 * e.height) + 'px'; | |
| } | |
| if (left > 50) { | |
| e.style.marginLeft = (-1 * e.width) + 'px'; | |
| } | |
| } | |
| }; | |
| // }} </script> | |
| </body> | |
| </html> |
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