Node.js Bot.help() Method

The Bot.help() method is used in the Node.js Telegraf Bot module. This module provides various functions to interact with the official Telegram Bot API. This Method executes when we type the reserved keyword /help. This method is generally used when we have any query related to the bot functioning and return output related to your query. 

Syntax: 

TelegrafBot.help(callback)

Parameters: This method accepts one parameter as mentioned above and described below: 

• Callback function: This method accepts only one parameter that holds the Update object from Telegram API.

Return Type: The return type of the function is void.

Installing Module: Install the module using the following command: 

npm install telegraf

Steps to get the keys: 

• First, get the GET BOT_TOKEN from BOTFATHER in the telegram. Just search for BOTFATHER in Telegram and select the verified one as shown below: 

• Type /start and then click on /newbot as shown below: 

• Now type the name of the bot and that must be unique. 

• Now just copy the token From the BotFather. And for deleting the token simply search /delete token in BotFather.

Project Structure:  

Filename: bot.js 

Javascript

// Requiring module
const telegraf = require("telegraf");

// Set your token
const token = 'YOUR_TOKEN';

// Creating a new object of Telegraf
const bot = new telegraf(token);

bot.help(ctx => {

    // The ctx object holds the Update
    // object from Telegram API
    ctx.reply("Yes what can i help");

    bot.hears("What is your name", ctx => {

        // Reply with your custom message
        ctx.reply("Hi This bot Created by Zack_aayush")
    })
})

// Calling the launch function
bot.launch()

Run the bot.js file using the following command:

node bot.js

Output: