Node.js writeStream.getWindowSize() 方法

writeStream.getWindowSize()方法是 tty 模块中 WriteStream 类的内置应用程序编程接口，用于获取该 WriteStream 对象对应的 TTY 的大小。

句法：

writeStream.getWindowSize()

参数：此方法不接受任何参数。

返回值：此方法返回类型为 [numColumns, numRows] 的数组，其中包含 numColumns 和 numRows。

示例 1：文件名：index.js

// Node.js program to demonstrate the
// writeStream..getWindowSize()  API
  
// Importing dgram module
var dgram = require('dgram');
  
// Creating and initializing client
// and server socket
var client = dgram.createSocket("udp4");
var server = dgram.createSocket("udp4");
  
// Handling the message event
server.on("message", function (msg) {
  
  // Creating and initializing a
  // WriteStream object
  let WriteStream = process.stdout;
  
  // Getting window size of this write stream
  // object by using .getWindowSize() API
  const col = WriteStream.getWindowSize();
  
  // Displaying the result
  process.stdout.write(msg + col[0]);
  
  // Exiting process
  process.exit();
})// Binding server with port
.bind(1234, () => {
});
  
// Client sending message to server
client.send("number columns of writestream :-  ", 0,
50, 1234, "localhost");

输出：

number columns of writestream :-  182

示例 2：文件名：index.js

// Node.js program to demonstrate the
// writeStream..getWindowSize()  API
  
// Creating and initializing a WriteStream object
let WriteStream = process.stdout;
  
// Getting window size of this write stream
// object by using .getWindowSize() method
const col = WriteStream.getWindowSize();
  
// Displaying the result
console.log("number rows of writestream :-  " + col[1]);

使用以下命令运行 index.js 文件：

node index.js

输出：

number rows of writestream :-  14

参考： https://nodejs.org/dist/latest-v12.x/docs/api/tty.html#tty_writestream_getwindowsize