array_count_values for JavaScript instead

Question

I have the following PHP-script, now I need to do the same thing in JavaScript. Is there a function in JavaScript that works similar to the PHP function, I have been searchi

Answer 1

Why not simply create a new javascript array "counts" Iterate over original array, and increament the count of "counts" for keys encountered in the array. http://jsfiddle.net/4t28P/1/

var myCurrentArray = new Array("apple","banana","apple","orange","banana","apple");

var counts = {};

for(var i=0;i< myCurrentArray.length;i++)
{
  var key = myCurrentArray[i];
  counts[key] = (counts[key])? counts[key] + 1 : 1 ;

}

alert(counts['apple']);
alert(counts['banana']);