How to remove a node from a Javascript array

Question

So...I have this array:

val['an_element'][0]['another_element'][2]['text']

I want to get rid of the entire "2" node.

Now...I THOUGHT the way to do this would be:

delete val['an_element'][0]['another_element'][2];

BUT...it doesn't actually drop the element, but simply empties it out.

I also tried:

val['an_element'][0]['another_element'][2] = null;

...but that just resulted in my console log nearly bleeding it was so red with errors.

Basically, i want that [2] node to NO LONGER EXIST. Basically, I want it to NOT BE FOUND AT ALL.

What do I do??? And I know the ".splice" method will NOT actually modify the original array, so please don't suggest it. :)

splice is a Mutator function, it will change the original array developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… — compid
– compid, Commented Jun 19, 2013 at 23:00
So your array actually is val['an_element'][0]['another_element'], containing objects with text properties? — Bergi
– Bergi, Commented Jun 19, 2013 at 23:01
possible duplicate of JavaScript array slice versus delete, and notice the difference between slice and splice! — Bergi
– Bergi, Commented Jun 19, 2013 at 23:04

Ted Hopp · Accepted Answer · 2013-06-19 22:59:23Z

3

The splice method will, in fact, modify the array. Just try:

val['an_element'][0]['another_element'].splice(2, 1);

From the docs:

Changes the content of an array, adding new elements while removing old elements.
...
If you specify a different number of elements to insert than the number you're removing, the array will have a different length at the end of the call.

answered Jun 19, 2013 at 22:59

Ted Hopp

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