Node.js writeStream.columns 属性
原文:https://www . geesforgeks . org/node-js-write stream-columns-property/
writeStream.columns 属性是 tty 模块中类 writeStream 的内置应用程序编程接口，用于获取该写流对象的列数。
语法:
const writeStream.columns
返回值:该属性返回写流对象包含的列数。
示例 1: 文件名:index . js
Javascript
// Node.js program to demonstrate the
// writeStream.columns property
// Importing dgram module
var dgram = require('dgram');
// Creating and initializing client
// and server socket
var client = dgram.createSocket("udp4");
var server = dgram.createSocket("udp4");
// Catching the message event
server.on("message", function (msg) {
// Creating and initializing a
// WriteStream object
let WriteStream = process.stdout;
// Getting number of columns
// by using columns API
const col = WriteStream.columns;
// Displaying the result
process.stdout.write(msg + col);
// Exiting process
process.exit();
})
// Binding server with port
.bind(1234, () => {
});
// Client sending message to server
client.send("Number of Columns :- ",
0, 21, 1234, "localhost");
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