<template>
  <div>
    <!--
    @blur 当元素失去焦点时触发blur事件
    -->
    <div>
      <input type="text" placeholder="请输入内容" @blur="blurText"/>
    </div>
 
  </div>
</template>
 
<script>
    export default {
      name: "commitText",
      methods:{
        blurText(){
          console.log("blur事件被执行了")
        }
      }
    }
</script>
 
<style scoped>
 
</style>

<div class="search-box" ref="searchBoxOfChatRoom">
?? ?<i class="fa fa-search" aria-hidden="true"></i>
?? ?<input
?? ??? ?ref="searchOfChatRoom"
?? ??? ?class="chatroom-search"
?? ??? ?type="search"
?? ??? ?placeholder="搜索群成员"
?? ??? ?@focus="changBackground(1)"
?? ??? ?@blur="changBackground(2)"
?? ?>
</div>

changBackground (flag) {
 
? switch (flag) {
? ? case 1:
? ? ? console.log('获取焦距')
? ? ? this.$refs.searchBoxOfChatRoom.style.background = 'white'
? ? ? this.$refs.searchOfChatRoom.style.background = 'white'
? ? ? break
? ? case 2:
? ? ? console.log('失去焦距')
? ? ? this.$refs.searchBoxOfChatRoom.style.background = '#dadada'
? ? ? this.$refs.searchOfChatRoom.style.background = '#dadada'
? ? ? break
? ? default:
? ? ? break
? }
}