KalEl KalEl - 6 months ago 21
Javascript Question

Delete a key from an associative array

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}
?

Answer

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);