javascript - 使用 javascript 添加到主屏幕功能

Question

我想使用 javascript 在按钮点击时“添加到主屏幕”功能。我的第一个问题是。是否可以使用 javascript 或 html/css？

我读了太多帖子，但没有找到任何工作代码。我发现用户必须做的是转到 chrome 菜单和“添加到主屏幕”上的选项卡，否则 chrome 会提示用户并询问他们“添加到主屏幕”

Answer 1

下图显示了文件资源管理器中的项目结构。公用文件夹中包含所有文件。 list 文件在公用文件夹之外

接下来创建 Manifest.json 和 service-worker.js 文件，如下所示:

list .json

{
  "short_name": "BetaPage",
  "name": "BetaPage",
  "theme_color": "#4A90E2",
  "background_color": "#F7F8F9",
  "display": "standalone",
  "icons": [
      {  
   "src": "assets/layouts/layout2/img/icon/android-icon-36x36.png",
   "sizes": "36x36",
   "type": "image/png",
   "density": "0.75"
  },
    {
      "src": "assets/layouts/layout2/img/icon/android-icon-48x48.png",
      "type": "image/png",
      "sizes": "48x48"
    },
    {
       "src": "assets/layouts/layout2/img/icon/android-icon-72x72.png",
   "sizes": "72x72",
   "type": "image/png",
   "density": "1.5"
  },

    {
    "src": "assets/layouts/layout2/img/icon/android-icon-96x96.png",
   "sizes": "96x96",
   "type": "image/png",
   "density": "2.0"
  },
  {
   "src": "assets/layouts/layout2/img/icon/android-icon-144x144.png",
   "sizes": "144x144",
   "type": "image/png",
   "density": "3.0"
  },
  {
   "src": "assets/layouts/layout2/img/icon/android-icon-192x192.png",
   "sizes": "192x192",
   "type": "image/png",
   "density": "4.0"
  }
  ],
  "start_url": "/index.html"
}

service-worker.js

self.addEventListener("fetch", function(event){

});

现在编辑index.html 并在head 部分 添加以下代码

<link rel="manifest" href="/manifest.json">     
<meta name="msapplication-TileColor" content="#ffffff">
<meta name="msapplication-TileImage" content="/ms-icon-144x144.png">
<meta name="theme-color" content="#ffffff"> 

在同一文件中，在 body 关闭之前将代码放在下面

<script type="text/javascript">
 if ('serviceWorker' in navigator) {
    console.log("Will the service worker register?");
    navigator.serviceWorker.register('service-worker.js')
      .then(function(reg){
        console.log("Yes, it did.");
     }).catch(function(err) {
        console.log("No it didn't. This happened:", err)
    });
 }
</script>

现在运行您的项目，等待几分钟并重新加载您的页面。

尽情享受吧!