vue2.0的contextmenu右键弹出菜单的实例代码

时间:2020-05-16 Lonely,lonelyBurning 人气:0

整理文档，搜刮出一个vue2.0的contextmenu右键弹出菜单的实例代码，稍微整理精简一下做下分享。

1.事情对象

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <meta charset="utf-8">
  <script src="http://unpkg.com/vuehttps://img.qb5200.com/download-x/dist/vue.js"></script>

  <script type="text/javascript">
    window.onload = function(){
      var vm = new Vue({
        el:'#box',
        methods:{
          show:function(event){
            console.log(event);  //event  这个就是事件对象了
          }
        }
      });
    }
  </script>
</head>
<body>
  <div id="box">
    <input type="button" value="按钮" @click="show($event)"> 
  </div>
</body>
</html>

通过show($event)把事件对象传到方法里

2.事件冒泡

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <meta charset="utf-8">
  <script src="http://unpkg.com/vuehttps://img.qb5200.com/download-x/dist/vue.js"></script>

  <script type="text/javascript">
    window.onload = function(){
      var vm = new Vue({
        el:'#box',
        methods:{
          show:function(){
            alert(1);
          },
          show1:function(){
            alert(2);
          }
        }
      });
    }
  </script>
</head>
<body>
  <div id="box">
    <div @click="show1()">
      <input type="button" value="按钮" @click="show()"> 
    </div>
  </div>
</body>
</html>

点击按钮的话他会，执行show ,show1方法，依次弹出1，2。

怎么来阻止

<1> 利用我们上面讲过的event对象: event.cancelBubble = true; //这种就阻止了

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <meta charset="utf-8">
  <script src="http://unpkg.com/vuehttps://img.qb5200.com/download-x/dist/vue.js"></script>

  <script type="text/javascript">
    window.onload = function(){
      var vm = new Vue({
        el:'#box',
        methods:{
          show:function(event){
            alert(1);
            event.cancelBubble = true;
          },
          show1:function(){
            alert(2);
          }
        }
      });
    }
  </script>
</head>
<body>
  <div id="box">
    <div @click="show1()">
      <input type="button" value="按钮" @click="show($event)"> 
    </div>
  </div>
</body>
</html>

<2>利用vue的方法阻止冒泡：给HTML元素绑定click事件的时候，改为@click.stop="show()"

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <meta charset="utf-8">
  <script src="http://unpkg.com/vuehttps://img.qb5200.com/download-x/dist/vue.js"></script>

  <script type="text/javascript">
    window.onload = function(){
      var vm = new Vue({
        el:'#box',
        methods:{
          show:function(event){
            alert(1);
            //event.cancelBubble = true;
          },
          show1:function(){
            alert(2);
          }
        }
      });
    }
  </script>
</head>
<body>
  <div id="box">
    <div @click="show1()">
      <input type="button" value="按钮" @click.stop="show()"> 
    </div>
  </div>
</body>
</html>

3.默认行为

比如contextmenu右键菜单

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <meta charset="utf-8">
  <!-- // <script src="vue.js"></script> -->
  <script src="http://unpkg.com/vuehttps://img.qb5200.com/download-x/dist/vue.js"></script>

  <script type="text/javascript">
    window.onload = function(){
      var vm = new Vue({
        el:'#box',
        methods:{
          show:function(){
            alert(1);
          },
          show1:function(){
            alert(2);
          }
        }
      });
    }
  </script>
</head>
<body>
  <div id="box">
    <input type="button" value="按钮" @contextmenu="show()"> 
    <input type="button" value="按钮1" @contextmenu.prevent="show1()"> 

    <p>//按钮右击点下去会依次出现 弹窗 1， 还有右击的默认菜单</p>
    <p>//按钮1右击只出现 弹窗 2</p>
  </div>
</body>
</html>

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