Node.js readStream.isTTY 属性

原文:https://www . geesforgeks . org/node-js-readstream-istty-property/

readStream.isTTY 属性是 TTY 模块中类 readStream 的内置应用编程接口，用于检查读取流对象是否是 tty 的实例。对于 tty、ReadStream，它将始终返回真。

语法:

const readStream.isTTY

返回值:如果读流对象是 tty 的实例，则该属性返回 true。

示例 1: 文件名:index . js

JavaScript

// Node.js program to demonstrate the
// readStream.isTTY 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
    // ReadStream object
    let ReadStream = process.stdin;

    // Checking if it is instance of TTY
    // or not by using isTTY() method
    const status = ReadStream.isTTY;

    // Displaying the result
    if (status) {
        process.stdout.write(msg
            + "an instant of TTY" + "\n");
    } else {
        process.stdout.write(msg
            + "not an instant of TTY" + "\n");
    }

    // Exiting process
    process.exit();
})

// Binding server with port
.bind(1234, () => {
});

// Client sending message to server
client.send("It is ", 0, 7, 1234, "localhost");

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