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Possible Duplicate:
how to empty an array in JavaScript 

var jsonParent = [];

This is my jsonArray I am pushing some elements in the array, but now I want to empty this array and remove all elements from it.

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marked as duplicate by Christoph, Niranjan Kala, Barmar, martin clayton, Vikdor Oct 5 '12 at 1:14

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

3 Answers 3

up vote 2 down vote

In terms of saving memory and references use

jsonParent.length = 0
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looks hacky but I like it;) – Christoph Oct 4 '12 at 7:40
    
Nothing hacky =) it's javascript – Anton Rudeshko Oct 4 '12 at 7:41
up vote 0 down vote

just assign 

jsonParent = []

again when you want to remove all elements

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up vote 0 down vote

If there are no other references to the same array then the easiest thing to do is just assign jsonParent to a new empty array:

jsonParent = [];

But if your code has other references to the same array instance then that would leave those other references with the original (populated) array and jsonParent with a different (empty) array. So if that is possible in your situation and you want to empty the actual array instance that you already have you can do:

jsonParent.length = 0;
// or if you like ugly:
jsonParent.splice(0, jsonParent.length);

(Note also that you are not using JSON here in any way. It's not JSON if it's not a string.)

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