Created
March 25, 2014 20:57
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Count the number of properties of an Object, in JavaScript.
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| function countProperties(obj) { | |
| var count = 0, | |
| k; | |
| for (k in obj) { | |
| if (obj.hasOwnProperty(k)) { | |
| count += 1; | |
| } | |
| } | |
| return count; | |
| } |
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If you are using ES5, you can use:
Object.keys(obj).lenght;.There's also a polyfill for
Objects.keysin the following link: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys