Vue 阻止事件冒泡

转载自 Vue2学习笔记:事件对象、事件冒泡、默认行为

1.事情对象

<!DOCTYPE html>
<html>
<head><title></title><meta charset="utf-8"><script src="http://unpkg.com/vue/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/vue/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/vue/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/vue/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/vue/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>