我试图写一个函数,使我能够删除一个项目时,按钮被点击,但我认为我与函数混淆-我使用$digest吗?

HTML & app.js:

<ul ng-repeat="bday in bdays">
  <li>
    <span ng-hide="editing" ng-click="editing = true">{{bday.name}} | {{bday.date}}</span>
    <form ng-show="editing" ng-submit="editing = false">
      <label>Name:</label>
      <input type="text" ng-model="bday.name" placeholder="Name" ng-required/>
      <label>Date:</label>
      <input type="date" ng-model="bday.date" placeholder="Date" ng-required/>
      <br/>
      <button class="btn" type="submit">Save</button>
      <a class="btn" ng-click="remove()">Delete</a>
    </form>
  </li>
</ul>

$scope.remove = function(){
  $scope.newBirthday = $scope.$digest();
};

当前回答

Pass the id that you want to remove from the array to the given function 

函数可以在同一个控制器中,但更可取 保持服务)

    function removeInfo(id) {
    let item = bdays.filter(function(item) {
      return bdays.id=== id;
    })[0];
    let index = bdays.indexOf(item);
    data.device.splice(indexOfTabDetails, 1);
  }

其他回答

一个内联的简单方法就是添加bdays。在删除按钮中拼接($index, 1)。

  <ul ng-repeat="bday in bdays">
  <li>
    <span ng-hide="editing" ng-click="editing = true">{{bday.name}} | {{bday.date}}</span>
    <form ng-show="editing" ng-submit="editing = false">
      <label>Name:</label>
      <input type="text" ng-model="bday.name" placeholder="Name" ng-required/>
      <label>Date:</label>
      <input type="date" ng-model="bday.date" placeholder="Date" ng-required/>
      <br/>
      <button class="btn" type="submit">Save</button>
      <a class="btn" ng-click="bdays.splice($index, 1)">Delete</a>
    </form>
  </li>
</ul>

没有控制器的实现。

<!DOCTYPE html> <html> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script> <body> <script> var app = angular.module("myShoppingList", []); </script> <div ng-app="myShoppingList" ng-init="products = ['Milk','Bread','Cheese']"> <ul> <li ng-repeat="x in products track by $index">{{x}} <span ng-click="products.splice($index,1)">×</span> </li> </ul> <input ng-model="addItem"> <button ng-click="products.push(addItem)">Add</button> </div> <p>Click the little x to remove an item from the shopping list.</p> </body> </html>

splice()方法的作用是:向数组中添加/从数组中删除项。

array.splice(index, howmanyitem(s), item_1, ....., item_n)

指数: 必需的。指定在什么位置添加/删除项的整数。使用负值指定从数组末尾开始的位置。

howmanyitem (s):可选的。要删除的项的数目。如果设置为0,则不会删除任何项。

item_1,……, item_n:可选。要添加到数组中的新项

建立在接受的答案,这将与ngRepeat,过滤器和处理期望更好:

控制器:

vm.remove = function(item, array) {
  var index = array.indexOf(item);
  if(index>=0)
    array.splice(index, 1);
}

观点:

ng-click="vm.remove(item,$scope.bdays)"

这是另一个答案。我希望它能有所帮助。

<a class="btn" ng-click="delete(item)">Delete</a>

$scope.delete(item){
 var index = this.list.indexOf(item);
                this.list.splice(index, 1);   
}

array.splice(start)
array.splice(start, deleteCount)
array.splice(start, deleteCount, item1, item2, ...)

完整的源代码在这里 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice

要删除项,您需要从数组中删除它,并可以将bday项传递给标记中的删除函数。然后在控制器中查找项目的索引并从数组中删除

<a class="btn" ng-click="remove(item)">Delete</a>

然后在控制器中:

$scope.remove = function(item) { 
  var index = $scope.bdays.indexOf(item);
  $scope.bdays.splice(index, 1);     
}

Angular会自动检测bdays数组的变化,并更新ng-repeat

演示:http://plnkr.co/edit/ZdShIA?p=preview

编辑:如果使用服务器进行实时更新,将使用您使用$resource创建的服务来管理数组更新,同时更新服务器