angular.js - Solution: angular ngModel.$render is not automatically called when the value changes

Question

Recently, I am using angular to make a WYSIWYG editor. When I customize the $render method of ngModel, a problem occurs. The code is as follows:

html part:

<p ng-controller="EditController">
        <p contenteditable="true" edit-box ng-model="vm.content" style="width: 300px; height: 100px;border: 1px solid dodgerblue;"></p>
        <p ng-bind-html="vm.content|trustAsHtml"></p>
    </p>

angular part:

angular.module('myApp',[])
            .controller('EditController',function($scope){
                $scope.vm={
                    content:''
                };
            })
            .filter('trustAsHtml',function($sce){
                return function(content){
                    return $sce.trustAsHtml(content);
                }
            })
            .directive('editBox',function(){
                return {
                    restrict:'EA',
                    require:'ngModel',
                    link:function(scope,element,attr,ngModelCtrl){
                        if(!ngModelCtrl)return;

                        //覆盖默认的$render方法
                        ngModelCtrl.$render=function(){
                            element.html(ngModelCtrl.$viewValue);
                        };

                        //向formatters流水线增加一个格式化方法
                        ngModelCtrl.$formatters.unshift(function(value){
                            console.log(value);
                           return value;
                        });
                        //绑定输入事件监听，当输入时，改变ngModel的值
                        element.bind('input',function(){
                           scope.$apply(function(){
                              ngModelCtrl.$setViewValue(element.html());
                           });
                        });
                    }
                }
            });

According to the tutorial, when the value of viewValue changes, ngModelCtrl.$render will be called, including a series of pipelines such as formatters and parsers. I also wrote it according to the tutorial, but render and formatters are only called once during the initialization of the command, and then they are not called when typing. Do I need to call render manually? Please enlighten me.

Answer 1

Are you surejavascript里有一个事件叫input？按你的注释来看，你应该监听keyup，keydown，changethis kind of incident