How to sort in specific order - array prototype(not by value or by name)

Question

I wish to sort an array of three strings in a specific order.

book, car and wheel.

I can receive these strings in any order. There may be one or more string

Answer 1

You could use an object with the order of the values and their order. With a default value, you could move not specified values to start or end of the array.

var order = { wheel: 1, book: 2, car: 3, default: 1000 },
    array = ['foo', 'car', 'book', 'wheel'];
    
array.sort(function (a, b) {
    return (order[a] || order.default) - (order[b] || order.default);
});

console.log(array);