Node.js readStream.setRawMode() 方法

readStream.setRawMode()方法是 'tty' 模块中 ReadStream 类的内置应用程序编程接口，用于将读取流对象的原始模式设置为作为原始设备工作。

句法：

const readStream.setRawMode( mode )

参数：此方法将布尔值作为参数。

返回值：此方法不返回任何值。

示例 1：文件名：index.js

Javascript

// Node.js program to demonstrate the
// readStream.setRawMode() method
 
// 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
    // ReadStream object
    let ReadStream = process.stdin;
 
    // Setting the read stream Raw mode
    // by using setRawMode() method
    ReadStream.setRawMode(false);
 
    // Checking if it is configured or not
    // by using isRaw() method
    const status = ReadStream.isRaw;
 
    // Displaying the result
    if (status)
        process.stdout.write(msg + "configured" + "\n");
    else
        process.stdout.write(msg + "not configured" + "\n");
 
    // Exiting process
    process.exit();
})
 
    // Binding server with port
    .bind(1234, () => {
    });
 
// Client sending message to server
client.send("It is ", 0, 7, 1234, "localhost");

输出：

It is not configured

示例 2：文件名：index.js

Javascript

// Node.js program to demonstrate the
// readStream.setRawMode() method
 
// Creating and initializing a ReadStream object
let ReadStream = process.stdin;
 
// Setting the read stream Raw mode
// by using setRawMode() method
ReadStream.setRawMode(true);
 
// Checking if it is configured or not
// by using isRaw() method
const status = ReadStream.isRaw;
 
// Displaying the result
if(status)
    console.log("It is configured");
else
    console.log("It is not configured");

输出：

It is configured

使用以下命令运行 index.js 文件：

node index.js

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