Recursively pick random element in array

Recursively pick random element in array

by Nirvanachain

JavaScript

var collection = [
    {name: 'Ford', is_available: true, color: 'blue'},
    {name: 'Toyota', is_available: false, color: 'green'},
    {name: 'Honda', is_available: false, color: 'red'}
];

var findItem = function(arr, prop) {
    var position = Math.floor(Math.random() * arr.length);
    var item = arr[position];

    if (arr.length === 0) {
       console.log(arr.length, 'Array is empty.  Ending!');
       return;
    }
    else if (item[prop] === true) {
        console.log('Found one!',item.name);
        return item.name;
    }
    else if (item[prop] === false) {      
      arr.splice(position, 1); //Remove item from the array
      item++;
      console.log(arr);
      return findItem(arr, prop); //Recursively call function again.
    }
};

findItem(collection, 'is_available');