How to determine whether the user has installed specific software in vue

With the continuous upgrading of front-end technology, more and more websites are beginning to use some client software, such as speech recognition, client installation, etc. In these websites, if users do not install the relevant software, they will not be able to use the corresponding functions normally.

Vue, as a popular front-end framework, can easily complete this task. Next we will introduce how to determine whether the user has installed specific software in Vue.js.

First, we need to know the identifier of the software to be judged. Here, we take Adobe Flash Player as an example.

Method 1: Use the navigator.plugins

Navigator.plugins property to obtain the list of plug-ins installed in the browser. We can use this attribute to determine whether the user has installed the required plug-ins.

if (navigator.plugins.length > 0) {
  for (var i=0; i<navigator.plugins.length; i++) {
    // 如果存在Adobe Flash Player插件
    if (navigator.plugins[i].name.match(/flash/i)) {
      // 执行相应操作
      return;
    }
  }
}
// 如果不存在Adobe Flash Player插件
// 给出相应提示
alert("请安装Adobe Flash Player插件");

Method 2: Using navigator.mimeTypes

Similarly, we can also use the Navigator.mimeTypes property to get the list of plug-ins installed in the browser. This method can also determine whether the user has installed the required plug-ins.

if (navigator.mimeTypes.length > 0) {
  for (var i=0; i<navigator.mimeTypes.length; i++) {
    // 如果存在Adobe Flash Player插件
    if (navigator.mimeTypes[i].type.match(/flash/i)) {
      // 执行相应操作
      return;
    }
  }
}
// 如果不存在Adobe Flash Player插件
// 给出相应提示
alert("请安装Adobe Flash Player插件");

Method 3: Use ActiveXObject

Of course, IE browser does not support navigator.plugins and navigator.mimeTypes properties, we can use ActiveXObject properties to achieve this.

try {
  var flash = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
  // 执行相应操作
}
catch (e) {
  // 如果不存在Adobe Flash Player插件
  // 给出相应提示
  alert("请安装Adobe Flash Player插件");
}

To sum up, these three methods can all be used to determine whether the user has installed specific software. Developers can choose one of these methods to implement based on their own needs. At the same time, it should be noted that these methods are only suitable for the detection of some commonly used software. For the detection of other software, different methods need to be used.

To sum up, determining whether the user has installed the software is a commonly used technology in front-end development. This article introduces three methods in Vue.js to determine whether the user has installed specific software. I hope this article can provide some help to Vue developers.

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