module.exports = function next(arr) { // discuss at: https://locutus.io/php/next/ // original by: Brett Zamir (https://brett-zamir.me) // note 1: Uses global: locutus to store the array pointer // example 1: var $transport = ['foot', 'bike', 'car', 'plane'] // example 1: next($transport) // example 1: next($transport) // returns 1: 'car' const $global = typeof window !== 'undefined' ? window : global $global.$locutus = $global.$locutus || {} const $locutus = $global.$locutus $locutus.php = $locutus.php || {} $locutus.php.pointers = $locutus.php.pointers || [] const pointers = $locutus.php.pointers const indexOf = function (value) { for (let i = 0, length = this.length; i < length; i++) { if (this[i] === value) { return i } } return -1 } if (!pointers.indexOf) { pointers.indexOf = indexOf } if (pointers.indexOf(arr) === -1) { pointers.push(arr, 0) } const arrpos = pointers.indexOf(arr) const cursor = pointers[arrpos + 1] if (Object.prototype.toString.call(arr) !== '[object Array]') { let ct = 0 for (const k in arr) { if (ct === cursor + 1) { pointers[arrpos + 1] += 1 return arr[k] } ct++ } // End return false } if (arr.length === 0 || cursor === arr.length - 1) { return false } pointers[arrpos + 1] += 1 return arr[pointers[arrpos + 1]] }