Remove value from associative array [duplicate]

Question

Possible Duplicate:
Remove specific element from a javascript array?

I am having an array, from which I want to remove a value.

Consider this as an array

[ 'utils': [ 'util1', 'util2' ] ]

Now I just want to remove util2. How can I do that, I tried using delete but it didn't work.

Can anyone help me?

Answer 1

Use the splice method:

var object = { 'utils': [ 'util1', 'util2' ] }  object.utils.splice(1, 1); 

If you don't know the actual position of the array element, you'd need to iterate over the array and splice the element from there. Try the following method:

for (var i = object.utils.length; i--;) {     var index = object.utils.indexOf('util2');      if (index === -1) break;      if (i === index) {         object.utils.splice(i, 1); break;     } } 

Update: techfoobar's answer seems to be more idiomatic than mine. Consider using his instead.

Answer 2

You can use Array.splice() in combo with Array.indexOf() to get the desired behavior without having to loop through the array:

var toDelete = object.utils.indexOf('util1'); if(toDelete != -1) {     object.utils.splice(toDelete, 1); }