如何从select>中调用AngularJS函数选项 [英] How to call AngularJS function from select > option

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本文介绍了如何从select>中调用AngularJS函数选项的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要从选择中调用AngularJS函数:

 < select ng-model =selection> 
< option onselect =angular.element(this).scope()。functionCall('one')> one< / option>
< option onselect =angular.element(this).scope()。functionCall('two')> two< / option>
< option onselect =angular.element(this).scope()。functionCall('three')> three< / option>
< option onselect =angular.element(this).scope()。functionCall('four')> four< / option>
< / select>

然而,该函数永远不会被调用。



在控制器中,

  $ scope.functionCall = function(value){
//做值
}

如何调用函数。对于这件事,建议你使用 ng-change ,结果可能与Cyril相同,但代码更具可读性和可测试性,也被认为是一种更好的做法:

下面是一个展示它的实际操作:
http://plnkr.co/edit/7GgwN9gr9qPDgAUs7XVx?p=preview

 app.controller('MainCtrl',function($ scope){
$ scope.listOfOptions = ['One','Two','Three'];

$ scope.selectedItemChanged = function(){
$ scope.calculatedValue ='您选择了数字'+ $ scope.selectedItem;
}
});

和HTML:

 < select ng-options =listOfOptions中选项的选项
ng-model =selectedItem
ng-change =selectedItemChanged()>
< / select>

希望有所帮助。谢谢。


I need to call an AngularJS function from selection:

<select ng-model="selection" >
<option onselect="angular.element(this).scope().functionCall('one')">one</option>
<option onselect="angular.element(this).scope().functionCall('two')">two</option>
<option onselect="angular.element(this).scope().functionCall('three')">three</option>
<option onselect="angular.element(this).scope().functionCall('four')">four</option>
</select>

However, the function never gets called.

In the controller,

$scope.functionCall = function(value){
// do stuff with value
}

How can I call the function.

解决方案

It's recommended that you use ng-change for that matter, the result may be the same as Cyril's, but the code is more readable and testable, also it is considered a better practice:

Here is a plunker demonstrating it in action: http://plnkr.co/edit/7GgwN9gr9qPDgAUs7XVx?p=preview

app.controller('MainCtrl', function($scope) {
  $scope.listOfOptions = ['One', 'Two', 'Three'];

  $scope.selectedItemChanged = function(){
    $scope.calculatedValue = 'You selected number ' + $scope.selectedItem;
  }
});

And the HTML:

<select ng-options="option for option in listOfOptions" 
        ng-model="selectedItem"
        ng-change="selectedItemChanged()">
</select>

Hope that helps. Thanks.

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