ECMAScript6 AngularJS过滤器

Question

我在一个项目中使用ECMAScript6,我正在尝试创建一个角度过滤器.下面是我的尝试,但是我在控制台中收到以下错误:无法设置未定义的属性'PassFilter'

我是ES6和Angular的新手.由于传统的限制,我不得不以这种方式引导角度.

myAngularModule = angular.module("MyModule");

angular.element(document).ready(function() {
  var myDiv = $("#myAngularDiv");
  angular.bootstrap(myDiv, ["MyModule"]);
});

myAngularModule.filter('PassFilter', APP.filters.PassFilter);



/* Filter is in a separate file: */
class PassFilter {

  constructor(input) {

    var split = input.split('');
    var result = "";
    for (var i = 0; i < split.length; i++) {
      result += "*";
    }
    return result;

  }
}

APP.filters.PassFilter = PassFilter;

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<div id="myAngularDiv">
  <input type="password" ng-model="password">
  <span>{{password | PassFilter}}</span>
</div>

Answer 1

我是Angular的新人.我用class在Angular中创建过滤器.

class PassFilter{
  constructor(input){
    this.input = input;
  }

  myMethod() {
    let input = this.input;

    let split = input.split('');
    let result = "";
    for (let i = 0; i < split.length; i++) {
      result += "*";
    }

    return result;
  }

  static PassFilterFactory(input){
    let filter = new PassFilter(input);
    return filter.myMethod();
  }
}

PassFilter.PassFilterFactory.$inject = ['input'];

angular.module('myAngularModule', [])
  .filter('passFilter', () => PassFilter.PassFilterFactory);

在HTML中

<span>{{password | passFilter}}</span>

Answer 2

Angular中的过滤功能不需要classa filter factory function.这意味着如果您使用的是ES6,则可以使用lambda(箭头函数)来实现过滤器.

myAngularModule.filter('PassFilter', ()=> {
   return (input)=> { 
      var split = input.split('');
      var result = "";
      for (var i = 0; i < split.length; i++) {
       result += "*";
      }
      return result;
   }
});