[JavaScript知识库]亲测解决 ：Navigation cancelled from “/xxx“ to “/xxx“ with a new navigation.

使用vue 3.0 写了一个登入页面，再点击登入的时候，第一次点击会没有反应，F12查看接口都调用了但是没有跳转，控制台打印出错：

?错误说有异常没有捕获；

这个错误是vue -router 内部的错误，没有进行catch处理导致的；

再vue-router3.0以上的版本新增功能：push和replace方法会返回一个promise；

解决方案：

在vue的router的js中添加下面代码

const originalPush = VueRouter.prototype.push
const originalReplace = VueRouter.prototype.replace
// push
VueRouter.prototype.push = function push (location, onResolve, onReject) {
  if (onResolve || onReject) return originalPush.call(this, location, onResolve, onReject)
  return originalPush.call(this, location).catch(err => err)
}
// replace
VueRouter.prototype.replace = function push (location, onResolve, onReject) {
  if (onResolve || onReject) return originalReplace.call(this, location, onResolve, onReject)
  return originalReplace.call(this, location).catch(err => err)
}

其中VueRouter是在vue初始化的时候引入的Router，完整代码：router/index.js

import VueRouter from 'vue-router'

Vue.use(VueRouter);
// 解决报错
const originalPush = VueRouter.prototype.push
const originalReplace = VueRouter.prototype.replace
// push
VueRouter.prototype.push = function push (location, onResolve, onReject) {
    console.log(onReject + onResolve)
  // if (onResolve || onReject) return originalPush.call(this, location, onResolve, onReject)
  return originalPush.call(this, location).catch(err => {
      console.log(err)
      originalPush.call(this, location, onResolve, onReject)
  });
}
// replace
VueRouter.prototype.replace = function push (location, onResolve, onReject) {
    console.log(onReject + onResolve)
  // if (onResolve || onReject) return originalReplace.call(this, location, onResolve, onReject)
  return originalReplace.call(this, location).catch(err => {
      console.log(err)
      originalPush.call(this, location, onResolve, onReject)
  })
}

.......

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})