Requirement: After the user edits, if there is data in the pool, he will be prompted to save when leaving the page.
Since a page will not only return, but also navigate to other pages, writing the logic in the return button alone cannot meet the requirements. Routing navigation can do it:
official document
reference
router.beforeEach((to, from, next) => {
console.log(to); // 即将要进入路由的对象
console.log(from); // 当前导航要离开的路由对象
console.log(next); // 调用next该方法，才能进入下一个路由
next();
});
Example code: router root file
import {
MessageBox} from 'element-ui'
import store from '../store/index'
import Router from 'vue-router'
//..............
const router = new Router({
......})
//..............
router.beforeEach((to, from, next) => {
let fromPath = from.fullPath==='/vocabulary/create'||from.fullPath==='/vocabulary/edit'
let toPath = to.fullPath!='/vocabulary/create'&&to.fullPath!='/vocabulary/edit'
let editTF = store.state.vocabulary.checkedList.length;
// 来自这俩路由 去的不是这俩路由 且有编辑内容
if(editTF&&fromPath&&toPath){
MessageBox.confirm('您有编辑内容尚未保存，确认退出？', '提示', {
confirmButtonText: '确定',
type: 'warning',
center: true,
}).then(() => {
store.commit(`vocabulary/coverCheckedList`,[]);
next();
}).catch(() => {
// // next(false);
// // router.replace(to.fullPath);
// // router.push(to.fullPath)
// // next(from.fullPath);
// // abort();
// router.back();
});
} else {
store.commit(`vocabulary/setSearchModel`,{
});
store.commit(`vocabulary/setSearchModel_Page`,{
});
store.commit(`vocabulary/setCurTab`,true);
next();
}
})
However, due to the particularity of my needs, this will cause the user to click cancel to enter an endless loop, and many methods have been tried to no avail.
So I found another way to find the life cycle of VUE: beforeRouteLeave
beforeRouteLeave(to,from,next){
let fromPath = from.fullPath==='/vocabulary/create'||from.fullPath==='/vocabulary/edit'
let toPath = to.fullPath!='/vocabulary/create'&&to.fullPath!='/vocabulary/edit'
let editTF = this.$store.state.vocabulary.checkedList.length;
// 来自这俩路由 去的不是这俩路由 且有编辑内容
if(editTF&&fromPath&&toPath){
this.$confirm('您有编辑内容尚未保存，确认退出？', '提示', {
confirmButtonText: '确定',
type: 'warning',
center: true,
}).then(() => {
this.$store.commit(`vocabulary/coverCheckedList`,[]);
next();
}).catch(() => {
return
});
} else {
this.$store.commit(`vocabulary/setSearchModel`,{
});
this.$store.commit(`vocabulary/setSearchModel_Page`,{
});
this.$store.commit(`vocabulary/setCurTab`,true);
next();
}
}
Perfect solution to needs~