JavaScript reset
Set array argument's internal pointer to the first element and return it
1 2 3 4 56 7 8 9 1011 12 13 14 1516 17 18 19 2021 22 23 24 2526 27 28 29 3031 32 33 34 3536 37 38 39 4041 42 43 44 4546 47 48 | function reset (arr) { // Set array argument's internal pointer to the first element and return it // // version: 1109.2015 // discuss at: http://phpjs.org/functions/reset // + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // + bugfixed by: Legaev Andrey // + revised by: Brett Zamir (http://brett-zamir.me) // % note 1: Uses global: php_js to store the array pointer // * example 1: reset({0: 'Kevin', 1: 'van', 2: 'Zonneveld'}); // * returns 1: 'Kevin' // BEGIN REDUNDANT this.php_js = this.php_js || {}; this.php_js.pointers = this.php_js.pointers || []; var indexOf = function (value) { for (var i = 0, length = this.length; i < length; i++) { if (this[i] === value) { return i; } } return -1; }; // END REDUNDANT var pointers = this.php_js.pointers; if (!pointers.indexOf) { pointers.indexOf = indexOf; } if (pointers.indexOf(arr) === -1) { pointers.push(arr, 0); } var arrpos = pointers.indexOf(arr); if (Object.prototype.toString.call(arr) !== '[object Array]') { for (var k in arr) { if (pointers.indexOf(arr) === -1) { pointers.push(arr, 0); } else { pointers[arrpos + 1] = 0; } return arr[k]; } return false; // Empty } if (arr.length === 0) { return false; } pointers[arrpos + 1] = 0; return arr[pointers[arrpos + 1]]; } |
Examples
Running
1 | reset({0: 'Kevin', 1: 'van', 2: 'Zonneveld'}); |
Should return
1 | 'Kevin' |
Dependencies
No dependencies, you can use this function standalone.
Open syntax issues
php.js uses JsLint to help us keep our code consistent and prevent some common bugs.
Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.
Authors
Thanks to the following developers, you get to have reset goodness in JavaScript.

javascript: a76883600569_do_hosp("heal","7667eddaf89376258610b9df58d1d54dda64721c");
Brett Zamir
20 Dec '09