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POPause a for loop
 

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    <p>Is it possible to pause a for loop in javascript/jquery?</p> <p>I have a <code>$.each</code>, that runs through a 63 long array, which have a <code>for</code> inside, which have another <code>for</code>, which have yet another <code>for</code> in it (Makes <code>each</code>><code>for</code>><code>for</code>><code>for</code>), now each of the <code>for</code> loops through the array, this makes 63^4 (Equals 15752961) different combinations, and that takes time...</p> <p>Sooo, is it possible to pause it 2sec, at 2k combinations?</p> <p>Reason why I want to pause the loop, is to unlock the UI...</p> <p>Code:</p> <pre><code>var $arr = ["","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","0","1","2","3","4","5","6","7","8","9"], len = $arr.length, l = 0, $("body").delay(1000).show(0, function(){ $.each($arr, function(index, val){ // 63 for(var i = 0; i &lt; len; i++){ // 3969 for(var j = 0; j &lt; len; j++){ // 250047 for(var k = 0; k &lt; len; k++){ // 15752961 thing = val+i+j+k; l++; $("#loading").text(l+"/15752961"); console.log(l+"/15752961"); $("&lt;div&gt;"+thing+"&lt;/div&gt;&lt;br /&gt;").prependTo("body"); } } } }) }) </code></pre> <p>Ps. If someone think, they could clear up my question, please do so :D</p> <p><strong>/* EDIT */</strong> If I try to run this server side, I get a server error, both if I use <code>foreach</code> or <code>for</code></p> <pre><code>$smaa = range("a","z"); $store = range("A","Z"); $tal = range("0","9"); $arr = array_merge($smaa, $store, $tal); for($i = 0; $i &lt; $count; $i++){ // 62 for($j = 0; $j &lt; $count; $j++){ // 3844 for($k = 0; $k &lt; $count; $k++){ // 238328 for($l = 0; $l &lt; $count; $l++){ // 14776336 $finish[] = $arr[$i].$arr[$j].$arr[$k].$arr[$l]; } $finish[] = $arr[$i].$arr[$j].$arr[$k]; } $finish[] = $arr[$i].$arr[$j]; } $finish[] = $arr[$i]; } foreach($arr as $first){ // 62 $finish[] = $first; foreach($arr as $second){ // 3844 $finish[] = $first.$second; foreach($arr as $third){ // 238328 $finish[] = $first.$second.$third; foreach($arr as $fourth){ // 14776336 $finish[] = $first.$second.$third.$fourth; } } } } </code></pre> <p>Please note, that I <strong>don't</strong> use both on the same time</p>
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    1. COAnd why do you need to pause it? What is the practical value for that?
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    2. COYou can do ["chunk" looping / batch processing](http://stackoverflow.com/a/10344560/575527) to prevent the UI from freezing during the long loop.
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    3. CO2 second pauses every 2k records would be ~4.5 hours x.x
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