Telegram broadcast multiple groups using bot

readme.md

Usage:

• create bot in @BotFather, get the token.
• add our bot to group.
• get group chat id, by adding @RawDataBot. After got the id, remove this bot from group.
• fill some data in script.
• run the script in online compiler, example: https://www.typescriptlang.org/play.

index.js

const chatIdList = ['xxx','yyy','zzz'];
const botToken = 'xxx';
const message = 'your message here';
const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
(async () => {
    for (let i = 0; i < chatIdList.length; i++) {
        fetch(`https://api.telegram.org/bot${botToken}/sendMessage?chat_id=${chatIdList[i]}&text=${message}&parse_mode=markdown`)
            .then(response => response.json())
            .then(response => {
                console.log({ status: `${chatIdList[i]}: ${response.ok}` });
            }).catch(err => {
                console.log('error! ', err);
            });
        await sleep(1000);
    }
    console.log("done");
})();