Toggle values into and out of an array in Javascript

Question

I want to have a simple array of values, ie

var simpleArray = [\"SE1\",\"SE2\",\"SE3\"];

I want to check this array when an action happens (a c

Answer 1

Assuming the order of the items doesn't matter you can do something like this:

function toggleArrayItem(a, v) {
    var i = a.indexOf(v);
    if (i === -1)
        a.push(v);
    else
        a.splice(i,1);
}

The .indexOf() method does work in IE from version 9 onwards, but if you need to support older IE versions you can use a shim as explained at MDN. Or if you're using jQuery anyway use $.inArray() instead.