phpjs/_octopress/source/functions/array_rand/_comments.html

php.js offers community built php functions in javascript

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<strong>
<a href="http://an3m1.com/" rel="nofollow">????? ???????</a>
</strong>
on 2012-04-10 09:55:00 <br />
If I might —perhaps you should consider adding a few images. I don’t mean to disrespect what you’ve said ; its very enlightening, indeed. However, I think would respond to it more positively if they could be something tangible to your ideas 
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<strong>
<a href="http://bi3.biz" rel="nofollow">Eugen</a>
</strong>
on 2011-04-21 23:23:19 <br />
one example here http://javascript.about.com/library/blsort2.htm
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<strong>
Taai
</strong>
on 2011-02-08 10:58:52 <br />
I improved this code.

<pre><code>
function array_rand(input, num_req) {
	var input_len, rand, indexes = [], ticks = num_req || 1;
	
	if (input instanceof Array === false || ticks &gt; (input_len = input.length)) {
		return null;
	}
		
	while (indexes.length != ticks) {
		rand = Math.floor(Math.random() * input_len);
		
		if (indexes.indexOf(rand) == -1) {
			indexes.push(rand);
		}
	}
	
	return ticks == 1 ? indexes[0] : indexes;
}
</code></pre>


Some (older) browsers doesn't support Array.indexOf function, so, here is a code (wich I also improved) for those older browsers (add this code at least before array_rand):

<pre><code>
if (!Array.indexOf) {
	Array.prototype.indexOf = function(obj) {
		var i = 0, l = this.length;
		for (; l--; i++) if (this[i] == obj) return i;
		return -1;
	}
}
</code></pre>


Have fun!
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<strong>
pwoul
</strong>
on 2009-05-10 03:30:30 <br />
thanks a lot, that's working now :)
(here's the code if someone needs it)

<pre><code>
var result = &quot;&quot;;
alea = array_rand([&quot;a&quot;,&quot;b&quot;,&quot;c&quot;,&quot;d&quot;,&quot;e&quot;,&quot;f&quot;,&quot;g&quot;,&quot;h&quot;], 8);
for(var i in alea)
	{
	var kikoo = alea[i];
	result = result + tableau[kikoo];
	}
</code></pre>
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<strong>
<a href="http://bahai-library.com" rel="nofollow">Brett Zamir</a>
</strong>
on 2009-05-09 23:18:59 <br />
@pwoul, You are referencing an array/object called &quot;tableau&quot; instead of the one you randomized, &quot;alea&quot;. Change it to &quot;alea&quot; (if that's what you want), and the number will vary... best wishes, Brett
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<strong>
pwoul
</strong>
on 2009-05-09 13:25:38 <br />
Hi, first i'd like to thank you for this very nice function.
But (there's always one :D) i have a problem using it :

<pre><code>
var result = &quot;&quot;;
var alea = array_rand([&quot;a&quot;,&quot;b&quot;,&quot;c&quot;,&quot;d&quot;,&quot;e&quot;,&quot;f&quot;,&quot;g&quot;,&quot;h&quot;], 8);
for(var i in alea)
	{
	result = result + tableau[i];
	}
</code></pre>

This code always returns the string &quot;abcdefgh&quot;, the order of the characters isn't random :/

Thanks for your help :)
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