vue阻止事件
阿新 • • 發佈：2018-05-17
vue1.事情對象
<!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 這個就是事件對象了 }
}
});
} </script></head><body>
<div id="box">
<input type="button" value="按鈕" @click="show($event)">
</div></body></html>
通過show($event)把事件對象傳到方法裏
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="按鈕" @click="show()">
</div>
</div></body></html>
點擊按鈕的話他會，執行show ,show1方法，依次彈出1，2。
怎麽來阻止
<1> 利用我們上面講過的event對象: event.cancelBubble = true; //這種就阻止了
<!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="按鈕" @click="show($event)">
</div>
</div></body></html>
<2>利用vue的方法阻止冒泡：給HTML元素綁定click事件的時候，改為@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="按鈕" @click.stop="show()">
</div>
</div></body></html>
3.默認行為
比如contextmenu右鍵菜單
<!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="按鈕" @contextmenu="show()">
<input type="button" value="按鈕1" @contextmenu.prevent="show1()">
<p>//按鈕右擊點下去會依次出現 彈窗 1， 還有右擊的默認菜單</p>
<p>//按鈕1右擊只出現 彈窗 2</p>
</div></body></html>
@click.stop.prevent，相當於同時執行：
event.stopPropagation();
event.preventDefault();
vue阻止事件