1.事情对象

<!DOCTYPEhtml><html><head><title></title><metacharset="utf-8"><scriptsrc="http://unpkg.com/vue/dist/vue.js"></script><scripttype="text/javascript">window.onload=function(){varvm=newVue({el:'#box',methods:{show:function(event){console.log(event);//event这个就是事件对象了}}});}</script></head><body><divid="box"><inputtype="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

<!DOCTYPEhtml><html><head><title></title><metacharset="utf-8"><scriptsrc="http://unpkg.com/vue/dist/vue.js"></script><scripttype="text/javascript">window.onload=function(){varvm=newVue({el:'#box',methods:{show:function(){alert(1);},show1:function(){alert(2);}}});}</script></head><body><divid="box"><div@click="show1()"><inputtype="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

<!DOCTYPEhtml><html><head><title></title><metacharset="utf-8"><scriptsrc="http://unpkg.com/vue/dist/vue.js"></script><scripttype="text/javascript">window.onload=function(){varvm=newVue({el:'#box',methods:{show:function(event){alert(1);event.cancelBubble=true;},show1:function(){alert(2);}}});}</script></head><body><divid="box"><div@click="show1()"><inputtype="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()"

<!DOCTYPEhtml><html><head><title></title><metacharset="utf-8"><scriptsrc="http://unpkg.com/vue/dist/vue.js"></script><scripttype="text/javascript">window.onload=function(){varvm=newVue({el:'#box',methods:{show:function(event){alert(1);//event.cancelBubble=true;},show1:function(){alert(2);}}});}</script></head><body><divid="box"><div@click="show1()"><inputtype="button"value="按钮"@click.stop="show()"></div></div></body></html>

3.默认行为

比如contextmenu右键菜单

<!DOCTYPEhtml><html><head><title></title><metacharset="utf-8"><!--//<scriptsrc="vue.js"></script>--><scriptsrc="http://unpkg.com/vue/dist/vue.js"></script><scripttype="text/javascript">window.onload=function(){varvm=newVue({el:'#box',methods:{show:function(){alert(1);},show1:function(){alert(2);}}});}</script></head><body><divid="box"><inputtype="button"value="按钮"@contextmenu="show()"><inputtype="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>

@click.stop.prevent，相当于同时执行：
event.stopPropagation();
event.preventDefault();