JavaScript Array move

Array.move.js

// Append a move method to the Array prototype
Array.prototype.move = function(from, to) {
    this.splice(to, 0, this.splice(from, 1)[0]);
    return this;
};

// Start with an existing array
var orig = ["Sam", "Tom", "Ben", "Sophie"];

// Use the new method to move the last item in the array to the first position
var spliced = orig.move(orig.length - 1, 0);

console.log(spliced);