角度：检查值ng-blur

Question

I'm trying to build a form in Angular, but i'm new with it, so I need some help :)

I have a field 'email' which should be checked when the user leave that field. A function in my controller should to check the entered value if it already exist in the database (ajax/http).

I found the 'ng-blur' function and have created a function in my controller to check the email. But, the $scope.user.email is undefined, and I don't known what i'm doing wrong. Can somebody help me?

This is my code so far:

HTML (jade)

p.claim-text Email
abbr.required.claim-text(title='required') *
input#billing_email.input-text.form-control.claim-input(type='email', placeholder='Email', value='', name='email', ng-model='user.email', ng-blur='checkEmail()' required)
p(ng-show="registerForm.email.$invalid && !registerForm.email.$pristine").help-block Invalid emailadres
p(ng-show="emailExists").help-block User exists! Click here to login

Controller function

$scope.checkEmail = function(){
        console.log($scope.user.email);
        $http({
            method: 'GET',
            url: '[someurl]',
            data: $scope.user.email,
        }).then(function successCallback(response){
            //if response is true, set emailExists to true;
        }, function errorCallback(response){

        });

    }

Answer 1

Please try this snipped

 var myApp = angular.module('myApp',[]); myApp.controller('GreetingController', ['$scope','$http', function($scope, $http) { //You can check POST at server side to get the entered email $scope.checkEmail = function(email){ //REMOVE THIS LINE console.log(email);return false; $http({ method: 'POST', url: '[someurl]', data: email, }).then(function successCallback(response){ //if response is true, set emailExists to true; }, function errorCallback(response){ }); } }]); 

 <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <!--HTML --> <div ng-app="myApp" ng-controller="GreetingController"> <input type="text" ng-blur="checkEmail(email)" ng-model="email"/> </div> 

OR
<!--JADE -->
input#billing_email.input-text.form-control.claim-input(type='email', placeholder='Email', name='email', ng-model='user.email', ng-blur='checkEmail(user.email)' ng-init="user.email=''" required)

Answer 2

You can pass the email to checkEmail function

input#billing_email.input-text.form-control.claim-input(type='email', placeholder='Email', value='', name='email', ng-model='user.email', ng-blur='checkEmail()' required)

Then in controller you just need to get the email from argument

$scope.checkEmail = function(){
        console.log($scope.user.email);
        $http({
            method: 'GET',
            url: '[someurl]',
            data: $scope.user.email,
        }).then(function successCallback(response){
            //if response is true, set emailExists to true;
        }, function errorCallback(response){

        });

    }