Vue之事件冒泡

1. 原生事件冒泡

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8">  
    <title></title>  
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">  
    <meta name="apple-mobile-web-app-capable" content="yes">  
    <meta name="apple-mobile-web-app-status-bar-style" content="black">  
    <style>  
  
    </style>  
    <script src="vue.js"></script>  
    <script>  
        window.onload=function(){  
            new Vue({  
                el:'#box',  
                data:{  
  
                },  
                methods:{  
                    show:function(ev){  
                        alert(1);  
                        //ev.cancelBubble=true;  
                    },  
                    show2:function(){  
                        alert(2);  
                    }  
                }  
            });  
        };  
    </script>  
</head>  
<body>  
    <div id="box">  
        <div @click="show2()">  
            <input type="button" value="按钮" @click="show($event)">  
        </div>  
    </div>  
</body>  
</html>

事件冒泡：

从内向外扩散，点击input,会扩散到外层的div,一直向上扩散。点击完按钮，会依次执行事件show()和show2()

结果：

先弹出1，后弹出2

使用原生js取消冒泡：ev.cancelBubble=true;

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8">  
    <title></title>  
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">  
    <meta name="apple-mobile-web-app-capable" content="yes">  
    <meta name="apple-mobile-web-app-status-bar-style" content="black">  
    <style>  
  
    </style>  
    <script src="vue.js"></script>  
    <script>  
        window.onload=function(){  
            new Vue({  
                el:'#box',  
                data:{  
  
                },  
                methods:{  
                    show:function(ev){  
                        alert(1);  
                        ev.cancelBubble=true;  
                    },  
                    show2:function(){  
                        alert(2);  
                    }  
                }  
            });  
        };  
    </script>  
</head>  
<body>  
    <div id="box">  
        <div @click="show2()">  
            <input type="button" value="按钮" @click="show($event)">  
        </div>  
    </div>  
</body>  
</html>

点完按钮后，只弹出1来。

2.Vue中事件冒泡

取消事件冒泡：使用 .stop来取消事件冒泡

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8">  
    <title></title>  
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">  
    <meta name="apple-mobile-web-app-capable" content="yes">  
    <meta name="apple-mobile-web-app-status-bar-style" content="black">  
    <style>  
  
    </style>  
    <script src="vue.js"></script>  
    <script>  
        window.onload=function(){  
            new Vue({  
                el:'#box',  
                data:{  
  
                },  
                methods:{  
                    show:function(){  
                        alert(1);  
                    },  
                    show2:function(){  
                        alert(2);  
                    }  
                }  
            });  
        };  
    </script>  
</head>  
<body>  
    <div id="box">  
        <div @click="show2()">  
            <input type="button" value="按钮" @click.stop="show()">  
        </div>  
    </div>  
</body>  
</html>