Question

我想使用日期创建自定义AngularJS过滤器，但首先我的过滤器不起作用...

app.filter('calculEndDate', function() {
  // here I want to add "duration" to the date
  // month or year according to "durationType"
  return function(date) {
    return date;
  }
});

<select ng-model="durationType">
  <option>month</option>
  <option>year</option>
</select>
<input type="number" ng-model="duration">
<label for="startDate">startDate</label>
<input type="text" ng-model="startDate">
<input type="text" ng-value="startDate | calculEndDate">

我的主要问题：endDate是null，我不知道在startDate不为空时如何继续应用我的过滤器。

Answer 1

var app = angular.module("App", []);
app.filter('calculEndDate', function() {
  // here I want to add "duration" to the date
  // month or year according to "durationType"
  return function(date, duration, duration_type) {
    var date = new Date(date);
    if (duration && duration_type === "month")
      date.setMonth(date.getMonth() + duration);
    if (duration && duration_type === "year")
      date.setFullYear(date.getFullYear() + duration )
    return date;
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="App">
<select ng-model="durationType">
  <option>month</option>
  <option>year</option>
</select>
<input type="number" ng-model="duration">
<label for="startDate">startDate</label>
<input type="text" ng-model="startDate">
<input type="text" ng-value="startDate | calculEndDate: duration:durationType">
{{startDate | calculEndDate: duration:durationType}}
  </body>

Answer 2

向过滤器添加参数：

app.filter('calculEndDate', function() {
      // here I want to add "duration" to the date
      // month or year according to "durationType"
      return function(date,duration, durationType) {
            //your code managing duration and durationType
      }
});


<select ng-model="durationType">
      <option>month</option>
      <option>year</option>
</select>
<input type="number" ng-model="duration">
<label for="startDate">startDate</label>
<input type="text" ng-model="startDate">
<input type="text" ng-value="startDate | calculEndDate : duration : durationType">

使用AngularJS过滤日期

2 个答案: