vuex实现菜单标签在重新登录后继续保留在页面上

最近作者 碰到了一个需求 ,退出后 重新登录 之前的标签依然保留在页面上

这里主要是 用到了 vuex

首先主要是 点击退出按钮时 记录 退出前 当前页面的路由和页面名称

点击退出:

loginout() {  

                localStorage.clear();

                this.$router.push({

                    path:'/login',

                    query: {

                        historyPath:{ // 拿到 退出前 当前页面的路由和页面名称

                            title:this.$route.query.title,

                            path: this.$route.path //记录当前是从哪里跳过去的   在登录后直接返回原来的页面

                        }

                    }

                });

点击登录:

login(){

            this.$router.push({  // 判断有没有路由 ,没有的话 跳到首页

                    path:this.$route.query.historyPath&&this.$route.query.historyPath.path?this.$route.query.historyPath.path:"/",

                    query: {

                        title:this.$route.query.historyPath&&this.$route.query.historyPath.path?this.$route.query.historyPath.title:''

                    }

                })

}

菜单标签页:

watch:{ //点击菜单的时候 更新 路由

            $route(newValue, oldValue){

                this.setTags(newValue);

            },

},

created(){ //  //第一次进来的时候 拿到标签数组数据 tabsList 

            if(typeof window!="undefined"){

                //在页面加载时读取localStorage里的状态信息

                window.localStorage.getItem("modifyTabsList") && this.$store.commit('modifyTabsList',JSON.parse(window.localStorage.getItem("modifyTabsList")));

                console.log('this.$store.:',this.$store.state.tabsList)

                this.$nextTick(()=>{

                    this.setTagsOld(this.$route);

                })

            }

        },

// 更新标签

            setTags(route){

                const isExist = this.tagsList.some(item => {

                    return item.path === route.path

                })

                if(!isExist&&route.name!=="index"){

                    this.tagsList.push(route)

                } else {

                    const index = this.tagsList.findIndex(v => Object.is(v.path, route.path))

                    if(route.path == '/'){

                        return

                    }else{

                        this.tagsList.splice(index, 1, route)

                    }

                }

                let tabs = [] 

                for(let i=0;i

                    if(this.tagsList[i].query.title){

                        tabs.push({

                            fullPath:this.tagsList[i].fullPath,

                            path:this.tagsList[i].path,

                            query:{

                                title:this.tagsList[i].query.title,

                                rf:this.tagsList[i].query.rf

                            }

                        })

                    }

                }

                window.sessionStorage.setItem("modifyTabsList", JSON.stringify(tabs)) //保存标签数组

                this.$store.commit('modifyTabsList',tabs)  //保存标签数组

                console.log(this.$store.state.tabsList)

                // 这样 退出后 可以拿到 最新的数组,下次登录的时候  可以才 created 钩子函数里 拿到最新的标签数组

            },

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