JavaScript function to slice an Array-like object (same arguments as native Array.slice)

array-slice.js

var Slice = (function () {
    "use strict";

    var func;

    func = function (arr, start, howMany) {
        var stop, newArr, i, j, cur;

        start = +start || 0;
        howMany = +howMany || Infinity;
        stop = Math.min(start + howMany, arr.length);
        newArr = [];
        for (i = start, j = stop; i < j; i++) {
            cur = arr[i];
            newArr.push(cur);
        }
        return newArr;
    };

    return func;
}());