Question

使用AngularJS点击元素时，获取元素兄弟姐妹的惯用方法是什么？

到目前为止，我已经得到了这个：

<div ng-controller="FooCtrl">
    <div ng-click="clicked()">One</div>
    <div ng-click="clicked()">Two</div>
    <div ng-click="clicked()">Three</div>
</div>

<script>
    function FooCtrl($scope){
        $scope.clicked = function()
        {
            console.log("Clicked", this, arguments);
        };
    }
</script>

这是一个jQuery实现作为一个具体的例子：

<div id="foo">
    <div>One</div>
    <div>two</div>
    <div>three</div>
</div>

<script>
    $(function(){
        $('#foo div').on('click', function(){
            $(this).siblings('div').removeClass('clicked');
            $(this).addClass('clicked');
        });
    });
</script>

Answer 1

使用指令，因为您想要遍历DOM：

app.directive('sibs', function() {
    return {
        link: function(scope, element, attrs) {
            element.bind('click', function() {
                element.parent().children().removeClass('clicked');
                element.addClass('clicked');
            })
        },
    }
});

<div sibs>One</div>
<div sibs>Two</div>
<div sibs>Three</div>

请注意，jQuery不是必需的。

fiddle

Answer 2

以下是您提供的jQuery示例的角度版本：

HTML：

<div ng-controller="FooCtrl">
    <div ng-click="selected.item='One'" 
    ng-class="{clicked:selected.item=='One'}">One</div>
    <div ng-click="selected.item='Two'" 
    ng-class="{clicked:selected.item=='Two'}">Two</div>
    <div ng-click="selected.item='Three'" 
    ng-class="{clicked:selected.item=='Three'}">Three</div>
</div>

JS：

function FooCtrl($scope, $rootScope) {   
    $scope.selected = {
        item:""
    }
}

注意：您不需要为此严格访问DOM。但是，如果您仍然想要，那么您可以编写一个简单的指令。如下所示：

HTML：

<div ng-controller="FooCtrl">
    <div ng-click="clicked()" get-siblings>One</div>
    <div ng-click="clicked()" get-siblings>Two</div>
    <div ng-click="clicked()" get-siblings>Three</div>
</div>

JS：

yourApp.directive('getSiblings', function() {
   return {
      scope: true,
      link: function(scope,element,attrs){
         scope.clicked = function () {
            element.siblings('div').removeClass('clicked');
            element.addClass('clicked');
         }
      }
   }
});

fiddle

Answer 3

以下是一个专门用Angular语法构建的指令（从jqLite借用）：

link: function(scope, iElement, iAttributes, controllers) {
    var parentChildren,
        mySiblings = [];

    // add a marker to this element to distinguish it from its siblings
    // this could be a lot more robust
    iElement.attr('rsFindMySiblings', 'anchor');

    // get my parent's children, it will include me!
    parentChildren = iElement.parent().children();

    // remove myself
    scope.siblings = [];
    for (var i=0; i < parentChildren.length; i++) {
       var child = angular.element(parentChildren[i]);
       var attr = child.attr('rsFindMySiblings');
       if (!attr) {
         scope.siblings.push({name: child[0].textContent});  
       }
    }
}

请注意，它使用控制器来存储结果。有关详细示例，请参阅此plunker

什么是* Angular *获取元素兄弟姐妹的方法？

3 个答案: