Delete a key from an associative array

Question

Consider var person=JSON.parse('{"name":"Alice","id",1234}').

How do I remove a key from the variable person? For example, how do I remove "name" completely, so that person becomes {"id":1234}?

This is not an associative array. It is an object literal. There is no length property like with an array (unless of course you define one). — Justin Johnson
– Justin Johnson, Commented Nov 18, 2009 at 10:03
possible duplicate of How do I remove objects from a javascript associative array? — Bennor McCarthy
– Bennor McCarthy, Commented Feb 28, 2013 at 12:16

Machado · Accepted Answer · 2016-05-12 21:55:30Z

20

Try delete person["name"].

Notice that delete will only set it as undefined, which will then not be reflected correctly in the length of the array.

If you know the key you should use splice i.e.

myArray.splice(key, 1);

Machado

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answered Nov 18, 2009 at 9:41

Konamiman

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