vueelement点击浏览器后退按钮使用confirm弹框提示路由拦截

mounted里面

if (window.history && window.history.pushState) {      history.pushState(null, null, document.URL)      window.addEventListener('popstate', this.goBack, false)    }    methods里面： goBack () {  history.pushState(null, null, null)}, beforeRouteLeave (to, from, next) {    if (this.saveLoading) {      next()      return    }    this.$confirm('请确认数据已保存，页面跳转后已填写的数据会被清空，是否继续跳转？', '提示', {      confirmButtonText: '是',      cancelButtonText: '否',      type: 'warning'    }).then(() => {      next()    }).catch((ms) => {      next(false)    })  },    

App.vue里面

goBack () {      // 该事件仅在浏览器后退按钮被点击时触发      if (this.needCofirmRouter.indexOf(this.nowRouter) > -1) {        history.pushState(null, null, null)        this.toLastRoute()      }    },    mounted () {    if (window.history && window.history.pushState) {      history.pushState(null, null, document.URL)      window.addEventListener('popstate', this.goBack, false)    }  },