Question

I have an associative array stored in another associative array. I know how to splice a specific value in just a regular array as such:

arr.splice(arr.indexOf('specific'), 1);

I was wondering how one could splice an array such as this:

arr['hello']['world']

EDIT Would this shorten hello['world']['continent']

var hello = {};
            hello['world'] = {};
            hello['world']['continent'] = "country";
            delete hello['world']['continent'];
            alert(hello['world']['continent'])

Answer 1

You should be able to just just use the delete keyword.

delete arr["hello"]["world"]

How do I remove objects from a javascript associative array?

Edit, based on other comments:

For the sake of readability, you can also do:

delete arr.hello.world

Since we are really just talking about objects, and not traditional arrays, there is no array length. You can however delete a key from an object.