浏览器加载进度条 #

import NProgress from 'nprogress' // Progress 进度条
import 'nprogress/nprogress.css' // Progress 进度条样式

// main.js

//引入nprogress 进度条插件
import NProgress from 'nprogress'
import 'nprogress/nprogress.css'
// 配置进度条参数 showSpinner：进度环，minimum：最小百分比，ease：动画和速度，trickleRate：每次步进增长多少
NProgress.configure({ showSpinner: false, minimum: 0.2, easeing: 'swing', speed: 1000, trickleRate: 0.2 })

// api/index.js

import NProgress from 'nprogress'
import 'nprogress/nprogress.css'

// 配置进度条参数 showSpinner：进度环，minimum：最小百分比，ease：动画和速度，trickleRate：每次步进增长多少
NProgress.configure({ showSpinner: false, minimum: 0.2, easeing: 'swing', speed: 1000, trickleRate: 0.2 })

// 防止多次请求进度条重复加载
let loadingNum = 0
function startLoading () {
  if (loadingNum === 0) {
    NProgress.start()
  }
  loadingNum++
}
function endLoading () {
  loadingNum--
  if (loadingNum <= 0) {
    NProgress.done()
  }
}

// 创建axios实例
const service = axios.create({
    baseURL: process.env.VUE_APP_BASE_API, //URL地址   环境变量文件
    timeout: 5000 ,//超时
})

// 请求拦截器
service.interceptors.request.use(
    config => {
    	// 开启进度条
		startLoading();
        return config
    },
    error => {
        return Promise.reject(error)
    }
)

// 响应拦截器
service.interceptors.response.use(
    response =>{
        // 关闭进度条
        endLoading()
    	return Promise.reject(response)
    },
    error => {
        // 关闭进度条
        endLoading()
        return Promise.reject(error)
    }
)

export default service;

import Vue from 'vue'
import VueRouter from 'vue-router'
import NProgress from 'nprogress'

Vue.use(VueRouter);
export const constRouter = [
    {
        path: '/login',
        component: () => import('@/views/login/Login'),
    },
]
const router = new VueRouter({
    mode: 'history',
    base: process.env.BASE_URL,
    routes: constRouter
})
// 页面路由刚开始切换的时候
router.beforeEach(async (to,from,next) => {
    // 开启进度条
    NProgress.start();
})
// 页面路由切换完毕的时候
router.afterEach(() => {
    // 关闭进度条
    NProgress.done()
})
export default router