angularjs 表单自定义验证指令

密码一致性验证

Demo1：在第一个密码框添加Id 属性，通过Id 获取其value 值，并与第二个密码框的value 值做实时对比

Demo2：通过第二个密码框的scope 拿到传入第一个密码框的值，并实时比较两个密码框的值

html 代码：

<div class="form-group">
    <label class="control-label" for="password">密码</label> 
    <input id="password" class="form-control" name="password" ng-model="password" type="password" required />
    <div ng-show="userForm.$submitted && userForm.password.$error.required" class="help-block">请输入密码</div>
</div>
<div class="form-group">
    <label class="control-label" for="checkPassword">确认密码</label> 
    <input equal-to="password" class="form-control" name="checkPassword" ng-model="checkPassword" type="password" required />
    <div ng-show="userForm.$submitted && userForm.checkPassword.$error.required" class="help-block">请再次输入密码</div>
    <div ng-show="userForm.$submitted && userForm.checkPassword.$error.pwmatch" class="help-block">两次密码输入不一致</div>
</div>

js 代码：

angular.module('user-groups').directive('equalTo',[function(){
    return {
        require: 'ngModel',
        link: function(scope,elem,attrs,ctrl){
            //第一个密码输入框的Id
            var password = '#' + attrs.equalTo;  
            //第一个密码输入框绑定事件
            $(elem).add(password).on('keyup', function () {  
                scope.$apply(function () {  
                    var result = elem.val()===$(password).val();
                    //设置验证是否通过
                    ctrl.$setValidity('pwmatch',result);  
                });  
            });  
        }
    };
}]);

//此方法直接提交,scope.password=undefined，elem.val()='';
angular.module('user-groups').directive('equalTo', function () {
    return{
        require: 'ngModel',
        scope: {
            password:'=equalTo'
        },
        link: function(scope,elem,attrs,ctrl){
            scope.$watch('password', function(){
                ctrl.$setValidity('pwmatch',elem.val()===scope.password);
            });
            elem.on('keyup', function(){
                scope.$apply(function(){
                    ctrl.$setValidity('pwmatch',elem.val()===scope.password);
                });
            });
        }
    }
})

 未完待续 ...