converts and array like object to an array

array.js

var unboundSlice = Array.prototype.slice;
var slice = Function.prototype.call.bind(unboundSlice);

function listToArray() {
  return slice(arguments);
}

function listToArray2() {
  return Array.prototype.slice.call(arguments);
}

function listToArray3() {
  return [].slice.call(arguments);
}

var arr = listToArray(1, 2, 3); // [1, 2, 3]