perfect password regex in js

password_regex.js

		var bad = /(?=.{8,}).*/;
		//Alpha Numeric plus minimum 8
		var good = /^(?=\S*?[a-z])(?=\S*?[0-9])\S{8,}$/;
		//Must contain at least one upper case letter, one lower case letter and (one number OR one special char).
		var better = /^(?=\S*?[A-Z])(?=\S*?[a-z])((?=\S*?[0-9])|(?=\S*?[^\w\*]))\S{8,}$/;
		//Must contain at least one upper case letter, one lower case letter and (one number AND one special char).
		var best = /^(?=\S*?[A-Z])(?=\S*?[a-z])(?=\S*?[0-9])(?=\S*?[^\w\*])\S{8,}$/;

		$('#password').on('keyup', function () {
		    var password = $(this);
		    var pass = password.val();
		    var passLabel = $('[for="password"]');
		    var stength = 'Weak';
		    var pclass = 'danger';
		    if (best.test(pass) == true) {
		        stength = 'Very Strong';
		        pclass = 'success';
		    } else if (better.test(pass) == true) {
		        stength = 'Strong';
		        pclass = 'warning';
		    } else if (good.test(pass) == true) {
		        stength = 'Almost Strong';
		        pclass = 'warning';
		    } else if (bad.test(pass) == true) {
		        stength = 'Weak';
		    } else {
		        stength = 'Very Weak';
		    }