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

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<strong>
Nathan
</strong>
on 2011-05-09 18:14:40 <br />
Sorry, the correct code would be 

<pre><code>function rand (min, max) {
    var argc = arguments.length;
    if (argc === 0) {
        min = 0;
        max = 2147483647;
    } else if (argc === 1) {
        throw new Error('Warning: rand() expects exactly 2 parameters, 1 given');
    }
	
	if (min &gt; max) { var mint = min; min = max; max = mint; }
	
	if (min &gt;= 0)
		return Math.floor(Math.random() * (max - min + 1)) + min;
	else {
		var result = Math.random() * (max + Math.abs(min) + 1) - Math.abs(min);
		
		if (Math.round(min) == min || Math.round(max) == max)
			return Math.floor(result);
		else
			return result;
	}
}</code></pre>

Only use new code if min is negative.
<hr />


<strong>
Nathan
</strong>
on 2011-05-09 18:05:28 <br />
The code given here does not support negatives or floats, nor does it support an input of max,min instead of min,max. All of which the PHP version does support.

I made some minor tweaks to get proper support for those &quot;features&quot;, not that I am not a JS pro and there is probably a better way to go about this.

<pre><code>function rand (min, max) {
    var argc = arguments.length;
    if (argc === 0) {
        min = 0;
        max = 2147483647;
    } else if (argc === 1) {
        throw new Error('Warning: rand() expects exactly 2 parameters, 1 given');
    }
	
	if (min &gt; max) { var mint = min; min = max; max = mint; }
	
	var result = Math.random() * (max + Math.abs(min) + 1) - Math.abs(min);
	
	if (Math.round(min) == min || Math.round(max) == max)
		return Math.floor(result);
	else
		return result;
}</code></pre>
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<strong>
test
</strong>
on 2010-11-04 19:46:43 <br />
<pre><code>
your_stuff('here');
</code></pre>
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<strong>
rtretretetert
</strong>
on 2010-04-12 10:26:52 <br />
th
<hr />


<strong>
<a href="http://kevin.vanzonneveld.net" rel="nofollow">Kevin van Zonneveld</a>
</strong>
on 2009-02-01 23:14:36 <br />
@ taith: Sorry I don't have a lot of time to really dig in the sources. It would be great if your could explain what makes your implementation better than the one provided by Waldo?
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<strong>
<a href="divinedesigns.ca" rel="nofollow">taith</a>
</strong>
on 2009-02-01 14:01:09 <br />
<pre><code>
function range(start, stop, step) {
 if (!arguments.length) return [];
 var min, max, step;
 if (arguments.length == 1) {
  min = 0;
  max = arguments[0]-1;
  step = 1;
 }else{
  min = arguments[0];
  max = arguments[1];
  step = arguments[2] || 1;
 }
 if (step &amp;lt; 0 &amp;amp;&amp;amp; min &amp;gt;= max) {
  step *= -1;
  var tmp = min;
  min = max;
  max = tmp;
  min += ((max-min) % step);
 }
 var a = [];
 for (var i = min; i &amp;lt;= max; i += step) a[i] = i;
 return a;
}
</code></pre>
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