What is the value passed between vue route jump pages?

clipboard.png
clipboard.png
Click the submit button of the first picture to jump to the second page and want to transfer the product information selected in figure 1 to figure 2. How to write the code?
what is the relationship between the pages in figure 1 and figure 2? What is used to complete the data transfer?

<el-button type="primary" @click.stop="onOrder"><router-link to="/book/bookMoney"></router-link></el-button>

Page 1:

 <template>
  <div>
    <bread-crumb :bread-crumb-list="breadCrumbList"></bread-crumb>
    <ul>
        <li class="bookItem" v-for="item in bookList" :key="item.id" style="text-align: left;">
            <el-checkbox-group v-model="checkList" @change="handleCheckedBooks">
                <el-checkbox :label="item.id">
                    <img class="bookImg" :src="item.book_url" style="width: 100px; height: 100px;">
                    <h3>{{item.book_title}}</h3>
                    <span class="price">{{item.book_price}}</span>
                    <div>
                        <el-input-number v-model="item.num" size="small" @change="handleChange" :min="0"></el-input-number> 
                    </div>
                </el-checkbox>
            </el-checkbox-group>
        </li>
    </ul>
    <div class="cart">
        <span></span>
        <span class="highLight">{{mount}}</span>
        <span></span>
        <el-button type="primary" @click.stop="onOrder"><router-link to="/book/bookMoney"></router-link></el-button>
    </div>
  </div>
 </template>
<script> 
import BreadCrumb from "@/components/common/BreadCrumb"
import bookMoney from "@/book/bookMoney"
export default {
  components: {
    BreadCrumb,
    bookMoney
  },
  data () {
    return {
    checkAll: false,
    isIndeterminate: true,
    breadCrumbList: [],
    bookList: [],
    radio: "0",
    checkList: [],
    num: 1,
    mount: 0,
    total: 0
    }
  },
  mounted () {
    this.breadCrumbList = [
    {title: ""},
    {title: ""},
    {title: ""}
    ],
    this.bookList = [{
    id: "0",
    book_url: require("../assets/images/book1.jpg"),
    book_title: "",
    book_price: "39",
    num: 0
    },{
    id: "1",
    book_url: require("../assets/images/book2.jpg"),
    book_title: "",
    book_price: "45",
    num: 0
    },{
    id: "2",
    book_url: require("../assets/images/book3.jpg"),
    book_title: "",
    book_price: "59",
    num: 0
    },{
    id: "3",
    book_url: require("../assets/images/book4.jpg"),
    book_title: "",
    book_price: "30",
    num: 0
    },{
    id: "4",
    book_url: require("../assets/images/book5.jpg"),
    book_title: "",
    book_price: "25",
    num: "0"
    },{
    id: "5",
    book_url: require("../assets/images/book6.jpg"),
    book_title: "",
    book_price: "69",
    num: 0
    }
    ]
  },
  methods: {
    onOrder () {
    },
    handleCheckedBooks () {
        console.log(this.checkList)
        this.checkList.forEach((item) => {
        console.log(item)
        this.bookList.forEach((val) => {
        if (val.id === item) {
        }
        })
    })
    this.checkList = value
        console.log(444)
        console.log(this.checkList)
    },
    handleChange (val) {
        this.mountPP
        this.$nextTick(function () {
        this.checkList.forEach((item) => {
        this.bookList.forEach((obj) => {
        if (obj.id === item) {
        this.total = val * obj.book_price
        }
        })
      })
    })
    },
  }
}
</script>

Oct.01,2021

ide/essentials/navigation.html" rel=" nofollow noreferrer "> https://router.vuejs.org/zh/g.


there are two ways, one is programmatic navigation, as mentioned upstairs, and the other is to cache your data with localStorage


in addition to the two methods mentioned above. You can also use $emit and $on to pass data
for some general data sets, it is recommended to use vuex for state management
if it is only this kind of data that needs to be eliminated at any time, there is no need
since you have used the best method of router-link, you should bring the data over when doing page routing


if the page has many components but are not parent-child components, it is best to introduce vuex to manage the state. If state management is simple, you can also use bus.$emit ('aa',1) to send messages

.
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3e26d-2c3e7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3e26d-2c3e7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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