-
-
Save lorenzbaum/ab7f03f298bb0207dfc8cc1d1856fb3c to your computer and use it in GitHub Desktop.
JavaScript object deep comparison. Comparing x === y, where x and y are values, return true or false. Comparing x === y, where x and y are objects, returns true if x and y refer to the same object. Otherwise, returns false even if the objects appear identical. Here is a solution to check if two objects are the same.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Object.compare = function (obj1, obj2) { | |
| //Loop through properties in object 1 | |
| for (var p in obj1) { | |
| //Check property exists on both objects | |
| if (obj1.hasOwnProperty(p) !== obj2.hasOwnProperty(p)) return false; | |
| switch (typeof (obj1[p])) { | |
| //Deep compare objects | |
| case 'object': | |
| if (!Object.compare(obj1[p], obj2[p])) return false; | |
| break; | |
| //Compare function code | |
| case 'function': | |
| if (typeof (obj2[p]) == 'undefined' || (p != 'compare' && obj1[p].toString() != obj2[p].toString())) return false;; | |
| break; | |
| //Compare values | |
| default: | |
| if (obj1[p] != obj2[p]) return false; | |
| } | |
| } | |
| //Check object 2 for any extra properties | |
| for (var p in obj2) { | |
| if (typeof (obj1[p]) == 'undefined') return false; | |
| } | |
| return true; | |
| }; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment