This post is an update to Simple Discord Messages in Python, but this time in JavaScript! We’re going to use some simple code for sending a Discord message without the need of any Discord API library.

Here’s the basic code:

const BOT_TOKEN = 'xxxxx';
const CHANNEL_ID = '#####';
const fetch = (...args) => import('node-fetch').then(({default: fetch}) => fetch(...args));

async function sendMessage(content) {
    const response = await fetch(
        `https://discord.com/api/v9/channels/${CHANNEL_ID}/messages`, {
            method: 'post',
            body: JSON.stringify({content}),
            headers: {
                'Authorization': `Bot ${BOT_TOKEN}`,
                'Content-Type': 'application/json',
            }
        }
    );
    const data = await response.json();
    return data;
}

To run the function, simply add this line:

sendMessage('hello world!');

To send a message along with an attached image from an external URL, we’ll have to modify the code and use FormData, like this:

const BOT_TOKEN = 'xxxxx';
const CHANNEL_ID = '#####';
const FormData = require('form-data');
const fetch = (...args) => import('node-fetch').then(({default: fetch}) => fetch(...args));

async function sendMessageAndImage(content, imageUrl) {
    const imageRes = await fetch(imageUrl).then(res => res.body);
    let formdata = new FormData();
    formdata.append("files[0]", imageRes, 'chart.png');
    formdata.append("payload_json", JSON.stringify({
        content
    }));
    const response = await fetch(
        `https://discord.com/api/v9/channels/${CHANNEL_ID}/messages`, {
            method: 'post',
            body: formdata,
            headers: {
                'Authorization': `Bot ${BOT_TOKEN}`,
            }
        }
    );
    const data = await response.json();
    return data;
}

And here is how to invoke the function:

sendMessageAndImage('foobar', 'https://avatars.githubusercontent.com/u/9919');