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clone

Published in: JavaScript

Clones and object (associative array - not arrays). Goes deep.

Required sometimes when you need to keep the original object intact, i.e. when you pass an object in to a function and modify it in the function - the original would change.

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function clone(o) {
  if(typeof(o) != 'object') return o;
  if(o == null) return o;
 
  var newO = new Object();
 
  for(var i in o) newO[i] = clone(o[i]);
 
  return newO;
}

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Posted By: KitSunde on May 29, 2008: Line 2,3 could more effectively be written as: if(typeof(o)!="object"||o==null)return o;

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