Node.js writeStream.rows 属性
原文:https://www . geesforgeks . org/node-js-write stream-rows-property/
writeStream.rows 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行数。
语法:
const writeStream.rows
参数:该属性不包含任何参数。
返回值:该属性返回写流对象的行数。
示例 1: 文件名:index.js
// Node.js program to demonstrate the
// writeStream.rows 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");
// Handling the message event
server.on("message", function (msg) {
// Creating and initializing a
// WriteStream object
let WriteStream = process.stdout;
// Getting number of rows
// by using rows API
const col = WriteStream.rows;
// 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 rows :- ",
0, 21, 1234, "localhost");
输出:
Number of rows :- 10
示例 2: 文件名:
// Node.js program to demonstrate the
// writeStream.rows property
// Creating and initializing a
// WriteStream object
let WriteStream = process.stdout;
// Getting number of rows
// by using rows API
const col = WriteStream.rows;
// Displaying the result
console.log("Number of rows :- " + col);
使用以下命令运行 index.js 文件:
node index.js
输出:
Number of rows :- 10
参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/tty . html # tty _ write stream _ rows
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