A介面

componentDidMount() {
        backTop();
        let localTemp = JSON.parse(localStorage.getItem('hotTemp'));

        if (localTemp === undefined || localTemp === null) { //這邊是判斷是不是從B回來的，如果不是，就初始化請求
            let params = {
                page: 1,
                size: 20
            }
            
 
this.getHotEvent(params);
        } else {  //如果是從B回來的，那麼就把條件啊，資料啊，直接給state進行顯示就可以了
            this.setState({
                pageNum: localTemp.pageNum,
                hotEvent:localTemp.hotEvent,
                success:localTemp.success,
                total:localTemp.total
            })
            
 
if (localTemp.sflag) { //我這邊是做了個是不是填寫了篩選條件的判斷   如果填寫了篩選條件回到A介面的時候，這些篩選條件要顯示出來
                this.setState({
                    defaultInput: localTemp.defaultInput,
                    startTime: localTemp.startTime,
                    endTime: localTemp.endTime,

                })
                
 
//this.getIeahotsSearch(localTemp.searchParam);
            } else { //這邊是沒有任何篩選條件，只要資料顯示就可以了

                //this.getHotEvent(localTemp.params);
            }
        }

    }



<Link className="recall left transition3"
to={{
     pathname: "/B",
      state: {eventArray: item, localState: this.state},  //這邊是我想要保留的資料，通過state傳給B 
}}
>{item.title}</Link>

B介面

componentDidMount() {
     
       /*儲存A介面列表的引數*/
        if(this.props.location.state.localState!==undefined&&this.props.location.state.localState!==null){
            localStorage.setItem("hotTemp", JSON.stringify(this.props.location.state.localState));
            //console.log(localStorage.getItem('hotTemp'));
        }

       
    }