在vuerouter检查条件下，如果（！null）{}无限循环。是Vue还是Javascript错误？

Question

有人对此代码有解释吗？它循环成千上万次。检查“如果（true）”相同的结果

router.beforeEach((to, from, next) => {
  let user = fb.auth().currentUser

  if (!user) {  // here is - !null
    console.log(123)
    next('/login')
  } else {
    next()
  }

})

here is conlose result

Answer 1

您需要检查要访问的路由是否不是/login

router.beforeEach((to, from, next) => {
  let user = fb.auth().currentUser

  if (!user && to.path !== '/login') {  // here is - !null
   next('/login')
  } else {
   next()
  }

})