phaser/src/utils/array/NumberArray.js

/**
* Create an array representing the range of numbers (usually integers), between, and inclusive of,
* the given `start` and `end` arguments. For example:
*
* `var array = numberArray(2, 4); // array = [2, 3, 4]`
* `var array = numberArray(0, 9); // array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]`
* 
* This is equivalent to `numberArrayStep(start, end, 1)`.
* 
* You can optionally provide a prefix and / or suffix string. If given the array will contain
* strings, not integers. For example:
* 
* `var array = numberArray(1, 4, 'Level '); // array = ["Level 1", "Level 2", "Level 3", "Level 4"]`
* `var array = numberArray(5, 7, 'HD-', '.png'); // array = ["HD-5.png", "HD-6.png", "HD-7.png"]`
*
* @method Phaser.ArrayUtils#numberArray
* @param {number} start - The minimum value the array starts with.
* @param {number} end - The maximum value the array contains.
* @param {string} [prefix] - Optional prefix to place before the number. If provided the array will contain strings, not integers.
* @param {string} [suffix] - Optional suffix to place after the number. If provided the array will contain strings, not integers.
* @return {number[]|string[]} The array of number values, or strings if a prefix or suffix was provided.
*/
var NumberArray = function (start, end, prefix, suffix)
{
    var result = [];

    for (var i = start; i <= end; i++)
    {
        if (prefix || suffix)
        {
            var key = (prefix) ? prefix + i.toString() : i.toString();

            if (suffix)
            {
                key = key.concat(suffix);
            }

            result.push(key);
        }
        else
        {
            result.push(i);
        }
    }

    return result;
};

module.exports = NumberArray;