Vue3 事件处理简单应用

去官网学习→事件处理 | Vue.js

运行示例：

代码：HelloWorld.vue

<template>
  <div class="hello">
    <h1>Vue 事件处理</h1>
    <button v-on:click="numb += 1">点击加1-----{{ numb }}</button><br/>
    <button @click="numb2 += 10">点击加10-----{{ numb2 }}</button><br/>

    <button @click="clickHandle">点击弹出框</button><br/>
    <span>{{ msg }}</span>
    <button @click="clickHandle2">点击改变内容</button><br/>

    <a href="https://www.baidu.com" @click.self.prevent="doThis">百度一下,阻止对元素本身的点击事件</a><br/>
    <button @click.once="numb3 += 50">只能点击一次,点击加50-----{{ numb3 }}</button><br/>

    <input type="text" @keyup.enter="clickHandle" placeholder="输入文字，按回车触发事件"/><br/>
    <input type="text" @keyup.space="clickHandle" placeholder="输入文字，按空格触发事件"/><br/>
    <input type="text" @keyup.up="clickHandle" placeholder="输入文字，按方向↑触发事件"/><br/>

    <input type="text" @keyup.crtl.enter="clickHandle" placeholder="CTRL+回车"/><br/>
    <input type="text" @click.left="clickHandle" placeholder="鼠标按键left" /><br/>
    <input type="text" @click.middle="clickHandle" placeholder="鼠标按键middle" /><br/>
    <input type="text" @click.right="clickHandle" placeholder="鼠标按键right" /><br/>

    <button @click="clickHandle3(msg2[1])">参数传递点击弹出框</button><br/>
    <button v-for="(item,index) in msg2" :key="index" @click="clickHandle3(item)">{{item}}</button>
  </div>
</template>

<script>
export default {
  name: 'HelloWorld',
  data(){
    return{
      numb : 1,
      numb2 : 10,
      numb3:50,
      msg:"消息内容",
      msg2:["张三丰","李四","王五"]
    }
  },
  //  methods
  methods:{
    clickHandle(){
      alert("事件触发");
    },
    //event 原生 DOM event
    clickHandle2(event){
      // 获取data中msg
      this.msg="改变内容Vue";
      console.log(event);
    },
    clickHandle3(e){
      // 传递参数
      alert("传递参数"+e);
     
    }
  }
  
}
</script>