1. 需求

这种需求其实在国外一些游戏网站和推广网站中经常会用到，目的是为了让客户 快捷方便的保存网站到桌面 ，网站主动尽量避免下次找不到网站地址了，当然精确的客户自己也可以使用浏览器的收藏功能去收藏

2. 实现效果

1. 下面 gif 效果我们可以看到默认进去会弹窗一个提示，提示用户进行网站安装到桌面的提示效果
   

2. 当我们点击 安装 后，会马上单独开一个窗口（这个窗口和普通的浏览器弹窗有点不一样，类似于一个Electron），并且会保存到桌面，展示快捷方式
   

3. 测试：打开电脑 应用 -> 安装的应用，也可以看到，这个网站地址也被安装到应用上了
   

3. 核心逻辑

window.deferredPrompt?.prompt

const installApp = () => {
   clearTimeout(timeOut);
   window.deferredPrompt?.prompt().then(() => {
       showInstallSet(false);
   });
   showInstallSet(false);
};

4. 完整react代码

1. 新建一个 GuideDown 组件，实现代码如下，代码内容其实很简单，这边不做过多详解

import React, {useEffect, useState} from 'react';
import {observer} from 'mobx-react-lite';
import {CloseOutline} from 'antd-mobile-icons';
import {Divider} from 'antd';
import {Button} from 'antd-mobile';
import {useTranslation} from 'react-i18next';

let timeOut = null;
const GuideDown = () => {
    const {t} = useTranslation();
    const [showInstall, showInstallSet] = useState(false); // 弹窗展示
    const [linkTime, lineTimeSet] = useState(5); // 倒计时获取能否安装状态，如果这个时间内一直没有，就不弹出

    useEffect(() => {
        try {
            if (window?.deferredPrompt) {
                if (sessionStorage.getItem('closeAppInstall') !== '1') showInstallSet(true);
            }
        } catch (error) {}
        timeOut = setTimeout(() => {
            lineTimeSet((e) => e - 1);
            clearTimeout(timeOut);
        }, 3000);
    }, [linkTime]);

    const installApp = () => {
        clearTimeout(timeOut);
        window.deferredPrompt?.prompt().then(() => {
            showInstallSet(false);
        });
        showInstallSet(false);
    };

    return showInstall ? (
        <div className='fixed top-4 right-4 w-75 bg-b2 z-[200] rounded-lg shadow-lg'>
            <div className='flex justify-between items-center p-3'>
                <span className='text-[16px] theme'>如何快速访问网站</span>{' '}
                <CloseOutline
                    className='cursor-pointer'
                    onClick={() => {
                        showInstallSet(false);
                        sessionStorage.setItem('closeAppInstall', '1');
                    }}
                />
            </div>
            <div className='pt-4 grid grid-cols-2 text-[12px]'>
                <div className='px-3 flex flex-col justify-between relative after:content-[""] after:bg-white/5 after:w-[1px] after:h-20 after:absolute after:right-0 after:top-1/2 after:-translate-y-1/2'>
                    <div className='leading-4'>1、在浏览器搜索栏点击该图标</div>
                    <div className='mt-2'>
                        <img src={require('@/branch/assets/images/download/guide1.png')} className='max-w-full' />
                    </div>
                </div>
                <div className='px-3 flex flex-col justify-between'>
                    <div className='leading-4'>2、在弹出框内点击安装</div>
                    <div className='mt-2'>
                        <img src={require('@/branch/assets/images/download/guide2.png')} className='max-w-full' />
                    </div>
                </div>
            </div>
            <div className='px-3 text-[12px]'>在桌面找到快捷方式即可直接打开网站</div>
            <Divider className='mt-2 mb-0 h-[1px bg-white/5' />
            <div className='flex justify-end items-center h-11'>
                <Button
                    className='bg-b1 text-w2 px-3 border-none rounded-full min-w-[70px] flex justify-center items-center !h-7 mr-3'
                    onClick={() => installApp()}
                >
                    {t('anzhuang')}
                </Button>
                <Button
                    className='border border-solid border-deep text-[#AFCAFA] px-3 rounded-full min-w-[70px] flex justify-center items-center !h-7 mr-3'
                    onClick={() => {
                        showInstallSet(false);
                        sessionStorage.setItem('closeAppInstall', '1');
                    }}
                >
                    {t('btn_cancel')}
                </Button>
            </div>
        </div>
    ) : (
        <></>
    );
};

export default observer(GuideDown);