javascript - password check directive elem.add error -

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i'm making password checking directive ensure password , confirm_password fields same:

angular     .module('mymodule')     .directive('pwcheck', function() {         return {             require: 'ngmodel',             link: function (scope, elem, attrs, ctrl) {                 var password = "#" + attrs.pwcheck;                 elem.add(password).on('keyup', function() {                     scope.$apply(function () {                         ctrl.$setvalidity('pwmatch', elem.val() === $(password).val());                     });                 });             }         }; });

i error when adding keyup handler both pw , pw check fields:

typeerror: elem.add not function

so removed .add() ,

elem.on('keyup', function() {

now i'm getting following error:

referenceerror: $ not defined

i'm following this codepen. i've set angular app correctly, , directive logs html elements (elem, attrs, ctrl) fine. i'm not sure problem is.

your jquery missing. suggest use scope variable inside directive have access scope of controller directive, because not creating isolated scope.

code

angular.module('mymodule') .directive('pwcheck', function() {   return {     require: 'ngmodel',     link: function (scope, elem, attrs, ctrl) {       var password = "#" + attrs.pwcheck;       elem.add(password).on('keyup', function() {         scope.$apply(function () {           ctrl.$setvalidity('pwmatch', elem.val() === scope[attrs.pwcheck]);         });       });     }   }; });

demo codepen


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