AngularJS自定义指令之复制指令实现方法

时间:2020-05-15 timelessmemoryli 人气:1

本文实例讲述了AngularJS自定义指令之复制指令实现方法。分享给大家供大家参考，具体如下：

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="bootstrap.min.css" rel="external nofollow" >
    <script src="jquery.min.js"></script>
    <script src="angular.js"></script>
    <script src="bootstrap.min.js"></script>
    <script type="text/javascript">
      var app = angular.module('myapp', []);
      app.directive('duplicate', function($rootScope){
       return {
        transclude: 'element',
        replace: true,
        priority: 2,
        link: function(scope, elem, attrs, ctrl, transclude) {
         var times = parseInt(attrs.duplicate);
         var previous = elem;
         var childScope;
         for(var i = 0; i < times; i++) {
          childScope = scope.$new();//新建scope的子scope
          childScope.number = i;
          transclude(childScope, function(clone){//transclude将每个childScope与clone关联， 一一对应(一对对)
            // console.log(childScope.$id);
            // console.log(clone.scope().$id)
            previous.after(clone);//在previous与clone拼接再赋值给clone
            previous = clone;
          });
         }
          console.log(scope.childHead.number);//可以看到5个全是scope的子scopeconsole.log(scope.childTail.number);
          console.log(scope == $rootScope)//可以看到此时指令scope就是$rootScope 因为scope:false
        },
       }
      });
    </script>
  </head>
  <body ng-app="myapp">
    <input type='text' ng-model='number' duplicate="5" />
    <br/>
    <!--与上面绑定 -->
    <input type="text" ng-model="childHead.number"/><br/><inputtype="text"ng−model="childTail.number" />
  </body>
</html>

希望本文所述对大家AngularJS程序设计有所帮助。

加载全部内容