js if判断里的return走到else赋不了值？

执行不到第一个为真时的return

if (!["/404", "/login", "/"].includes("/")) {
    return "/";
} else {
    return "/111";
}

知道了

if (["/404", "/login", "/"].includes(item.path)) {
    return item.path;
} else {
    return "/" + item.path;
}

/* -------------------------------- 导航守卫 -------------------------------- */
import router from './index';
import store from '@/store'

const routes = router.options.routes;
console.log(routes);
// 扁平化路由数据
var flattenData = [];
function flattening(menu) {
  menu.map(item => {
    // console.log(item);
    if (item.children) {
      flattening(item.children) // 递归执行
    }
    flattenData.push({
      path: item.path,
      // visible: item.visible,
      meta: {
        title: item.title,
        id: item.id
      }
    })
  });
}
flattening(routes);

// 将所有路径集合起来，用于前置守卫中判断
var paths = flattenData.map(item => {
  console.log(["/404", "/login", "/"].includes(item.path));
  if (["/404", "/login", "/"].includes(item.path)) {
    return item.path;
  } else {
    return "/" + item.path;
  }
})


// 全局前置守卫
router.beforeEach((to, from, next) => {
  console.log(to, from);
  console.log(paths);
  console.log(paths.includes(to.path));
  /* if (!paths.includes(to.path)) {
    next({ path: '/404' })
  } */
  if (sessionStorage.getItem("X-Token")) {
    next()
  } else {
    if (to.path !== '/login') {
      alert("未登录，请先登录！")
      next({ path: '/login' })
    } else {
      next()
    }
  }
})

/* // 全局解析守卫
router.beforeResolve((to, from) => {
    console.log(to,from)
}) */

// 全局后置钩子
router.afterEach((to, from) => {
  // console.log(to, from)
  sessionStorage.setItem("menu_id", to.meta.id);
  store.commit("changeMenuid", to.meta.id)
})

自问自答 666

自己解决了，就记录一下