Remove empty elements from an array in Javascript

Question

How do I remove empty elements from an array in JavaScript?

Is there a straightforward way, or do I need to loop through it and remove them manually?

Answer 1

If using a library is an option I know underscore.js has a function called compact() http://documentcloud.github.com/underscore/ it also has several other useful functions related to arrays and collections.

Here is an excerpt from their documentation:

_.compact(array)

Returns a copy of the array with all falsy values removed. In JavaScript, false, null, 0, "", undefined and NaN are all falsy.

_.compact([0, 1, false, 2, '', 3]);

=> [1, 2, 3]