javascript - Remove value from associative 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

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.