如何使用node.js获取屏幕分辨率

I need get screen resolution with node.js, but the following code don't work.

我需要使用node.js获取屏幕分辨率，但以下代码不起作用。

var w = screen.width;
var h = screen.height;

This also don't work.

这也行不通。

var w = window.screen.width;
var h = window.screen.height;

Someone know how to get screen resolution with node.js ? Thank you.

有人知道如何使用node.js获得屏幕分辨率吗？谢谢。

4 个解决方案

#1

There is now a screenres module via npm:

现在有一个通过npm的screenres模块：

https://www.npmjs.com/package/screenres

Currently OS X only, but the author has instructions for adding cross-platform support should anybody be so inclined.

目前仅限OS X，但如果有人愿意，作者会提供添加跨平台支持的说明。

#2

You should retrieve the window.screen.width and window.screen.height in your client-side JavaScript code and send that information to your server-side Node.js application via AJAX, WebSocket, as form data, etc.

您应该在客户端JavaScript代码中检索window.screen.width和window.screen.height，并通过AJAX，WebSocket，表单数据等将该信息发送到服务器端Node.js应用程序。

For example:

例如：

(function(w) {
    $.ajax({
        type: 'POST',
        url: '/echo/json',
        data: {
            w: w.screen.width,
            h: w.screen.height
        },
        success: function() {
            console.log(arguments);
        },
        dataType: 'json'
    });
})(window);

This is common and is not related to the server-side technology. Doesn't matter what you use at the back-end (Node.js, Python, Ruby, PHP, Java, ASP.NET, etc.), you should send a data from client to server since the server doesn't deal with the user's browser directly.

这很常见，与服务器端技术无关。无论你在后端使用什么（Node.js，Python，Ruby，PHP，Java，ASP.NET等），你应该从客户端发送数据到服务器，因为服务器没有处理用户的浏览器直接。

#3

I solved the problem with phantomJS.

我用phantomJS解决了这个问题。

Install phantomJS:

安装phantomJS：

sudo apt-get install phantomjs

Create app.js file:

创建app.js文件：

var w = screen.width;
var h = screen.height;

console.log(w+"x"+h);

phantom.exit();

Execute:

执行：

phantomjs app.js

Return:

1366x768

#4

This is quite an overkill, but the node module I found doesn't work anymore and it doesn't handle multiple displays anyway:

这是一个相当的矫枉过正，但我发现的节点模块不再起作用了，它无论如何都不能处理多个显示：

npm install nightmare

And then if you want for exampnle the size and coordinates of the external monitor if available:

然后，如果您想要外部监视器的大小和坐标（如果可用）：

const getBounds = async () => {
  const nm = new Nightmare({
    webPreferences: {
      nodeIntegration: true,
    },
  });
  const bounds = nm
    .goto('about:blank')
    .evaluate(() => {
      const electron = require('electron');
      const displays = electron.screen.getAllDisplays()
      const display = displays.find((d) => d.bounds.x !== 0 || d.bounds.y !== 0) || displays[0];
      return display.bounds;
    }).end();
  return bounds;
};

#1