/** * strongPass.js * * This script provides a rudimentary check of the * strength of a password. It is not able to check * the password against a dictionary to prevent users * from using common words or phrases, but it does * check that the password contains upper- and lower- * case letters, numerals, and symbols. For an * example, check out: * http://projects.jamessocol.com/scripts/javascript/strongPass.js.htm * * LICENSE: This product is freeware. Please feel * free to use, modify and distribute, and to learn * from it. If you use it on your site, please leave * me some credit, like "By..." if you use it as-is * or "Based on..." if you modify it. Thanks! * * USAGE: To implement this script, simply create some *

with a fixed width (in pixels) or a table cell * and give it the following ID attribute: * id="passStrength" * for example: * * Make sure no other elements of the page use this ID. * Then add the following attribute to your password field: * onKeyUp="strongPass(this);" * for example: * * Finally, add the following to the section of * your page: * * Then you're done! * * @package turnThePage * @author James Socol * @version 1.0 * @date 20 July 2006 */ function strongPass (input) { var text = new Array('

', '

'); var weak = new Array('100', 'Password Inseguro!'); var ok = new Array('100', 'Password Perfecto'); var strong = new Array('100', 'Password Fuerte Perfecto'); var very = new Array('100', 'Password Muy Fuerte Perfecto'); var error = '

Error

'; var password = input.value; var strength = 0; if (password.match(/[a-z]/)) { strength = strength + 10; } if (password.match(/[A-Z]/)) { strength = strength + 10; } if (password.match(/[0-9]/)) { strength = strength + 10; } if (password.match(/[^a-zA-Z0-9]/)) { strength = strength + 10; } if (password.length >= 7) { strength = strength + 5; } if (password.length >= 8) { strength = strength + 5; } if (password.length >= 14) { strength = strength + 10; } if (strength <= 30) { text = text[0] + weak[0] + text[1] + weak[1] + text[2]; } else if (strength <= 40) { text = text[0] + ok[0] + text[1] + ok[1] + text[2]; } else if (strength <= 50) { text = text[0] + strong[0] + text[1] + strong[1] + text[2]; } else if (strength <= 60) { text = text[0] + very[0] + text[1] + very[1] + text[2]; } else { text = error; } if (document.getElementById) { id = document.getElementById('passStrength'); id.innerHTML = ''; id.innerHTML = text; } else if (document.all) { id = document.all('passStrength'); id.innerHTML = text; } }