Randomize an array in JavaScript

// For the people trying to find a simple script that is actually readable to randomize an array/list, here you go
function randomize(length) {
    a = []
    b = []
    length++
    // Make a an ascending list. (This isn't a typo you moron.)
    for (i=0;i<length;i++) {
        a.push(i)
    }
    // Main loop
    while (length > 1) {
        rng = Math.floor(Math.random()*a.length)
        b.push(a[rng])
        a.splice(rng,1)
        length--
    }
    return b
}
// Example: randomize(2) can return [0, 1] or [1, 0]
// randomize(6) can return [2, 5, 3, 1, 0, 4]