beforeDestroy的使用

beforeDestroy ---實例銷毀之前調用
需求是這樣的:
important:下面截圖數據都是測試數據

日期在我點擊查詢的時候要存儲,刷新就讀內存,但是我點擊其他頁面再進來的時候,這個內存要清空
1.現在查詢時存儲數據

   search(){
      let time = { 
        start: this.formSearch.beginSearchTime,
        end: this.formSearch.endSearchTime,
        timeRange: this.formSearch.timeRange,
        page: this.formSearch.page
      }
      localStorage.setItem('initTime',JSON.stringify(time))
    }

2.在created里面去獲取數據

 created () {  
    let searchCarTime = JSON.parse(localStorage.getItem('initTime'))
    if (searchCarTime) {
      this.formSearch.beginSearchTime = searchCarTime.start
      this.formSearch.endSearchTime = searchCarTime.end,
      this.formSearch.timeRange = searchCarTime.timeRange 
      this.formSearch.page = searchCarTime.page 
    }
  },

3.實例銷毀之前調用

  beforeDestroy(){
    localStorage.removeItem('initTime')
  }