无法获取独立范围的值

Question

无法获取独立范围 "check" 的值。出于测试目的，我将索引值传递给 "check"。我必须在 ng-repeat 完成时添加动画，但是 "scope.$last" 也给出了未定义的值。我不会发现我的代码语法或逻辑有什么问题。

angular.module('myApp',[])
.directive('track',function(){
    return{
        restrict:'E',
        scope: { check : "="},
        template:`<div class="routeTable"><table class="table" id="road">
                     <tr ng-repeat="level in levels">
                         <td  ng-repeat="lane in lanes"  check = {{$index}}></td>
                      </tr>
                   </table></div>`,
        controller: function($scope){
            $scope.levels = [1,2];
            $scope.lanes= [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15];
        },
        link: function(scope,elem,attr){
            console.log(scope.$last);
            console.log(attr.check);
        }
    }
})

.routeTable table tr td{
    border: 1px solid  #000000 !important;
    height:30px;
    background-color:#CACDD0;
    width:30px;
}
.routeTable{
    padding:10px;
    width:500px;
}

<!doctype html>
<html ng-app="myApp">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <track></track>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.8/angular.min.js"></script>
    <script src="track.js"></script>
</body>

</html>

Answer 1

我想你误会了什么。 scope 变量传递仅适用于指令的相同标记。在下面的示例中，我定义了一个新指令 d1，check 属性将正确传递给它。

angular.module('myApp',[])
.directive('track',function(){
    return{
        restrict:'E',
        
        template:`<div class="routeTable"><table class="table" id="road">
                     <tr ng-repeat="level in levels">
                         <td  ng-repeat="lane in lanes" d1 check = "$index"></td>
                      </tr>
                   </table></div>`,
        controller: function($scope){
            $scope.levels = [1,2];
            $scope.lanes= [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15];
        }
    }
})

.directive('d1', function(){
    return {
        scope: { check : "="},
        link: function(scope,elem,attr){
            console.log(scope.check);
        }
    }
})

.routeTable table tr td{
    border: 1px solid  #000000 !important;
    height:30px;
    background-color:#CACDD0;
    width:30px;
}
.routeTable{
    padding:10px;
    width:500px;
}

<!doctype html>
<html ng-app="myApp">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <track></track>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.8/angular.min.js"></script>
    <script src="track.js"></script>
</body>

</html>

无法获取独立范围的值

Not able to fetch value of isolated scope

javascript

angularjs

angularjs-directive

custom-directive