Vue-el-input增加节流

[PleaseStartYourPerformance]

  //鼠标进入输入框+input的change
  onSearchFocus(val:any) {
    if (this.timer) {
      clearTimeout(this.timer)
    }
    this.timer = setTimeout(() => {
      if(val !== ''){
        this.getFilterContent()
      }
    }, 300)
  }

    <el-input
      ref="searchRef"
      v-model="searchKeyword"
      size="medium"
      @focus="onSearchFocus"
      @blur="onSearchBlur"
      @clear="onSearchClear"
      @input="onSearchFocus"
      @keyup.enter.native="keyUpChange"
      clearable
      :placeholder="placeholder"
    >
      <xin-icon
        slot="prefix"
        xin-type="nicon-search"
        :class="size !== 'medium' ? 'f_s22' : ''"
      />
    </el-input>