js-路由动画效果,路由返回上一级history go设置

js-路由动画效果,路由返回上一级history go设置
组件里面的生命周期

 beforeRouteUpdate (to, from, next) {
      let isBack = this.$router.isBack
      if (isBack) {
        this.transitionName = 'slide-right'
      } else {
        this.transitionName = 'slide-left'
      }
      this.$router.isBack = false
      next()
    }

router.js中的

Router.prototype.goBack = function () {
  this.isBack = true
  window.history.go(-1)
}