Javascript for posting a message to a Microsoft Teams channel

post-message-to-teams.js

'use strict';
const axios = require('axios'); // axios must be installed via npm i axios
const webhookURL = "https://outlook.office.com/webhook/1234567890"; // Replace with a valid webhool URL obtained by adding an "Incomming Webhook" connector to your teams channel

if (process.argv.length === 4) {
  const title = process.argv[2];
  const message = process.argv[3];
  console.log(`${title}, ${message}`);
  postMessageToTeams(title, message);
} else {
  console.log('Usage: node post-message-to-teams.js title messageBody');
}

async function postMessageToTeams(title, message) {
    const card = {
      '@type': 'MessageCard',
      '@context': 'http://schema.org/extensions',
      'themeColor': "0072C6", // light blue
      summary: 'Summary description',
      sections: [
        {
          activityTitle: title,
          text: message,
        },
      ],
    };

    try {
      const response = await axios.post(webhookURL, card, {
        headers: {
          'content-type': 'application/vnd.microsoft.teams.card.o365connector'
        },
      });
      return `${response.status} - ${response.statusText}`;
    } catch (err) {
      return err;
    }
  }

This doesn't work for me. Fixed it by letting Axios handle the content-length calculation.
See more at this answer at stackoverflow

Thanks for your feedback @voidbar. This worked back in 2019, but I've now updated the gist to let Axios calculate the content-length as you suggest.

FYI run this script using the syntax node post-message-to-teams.js "test" "test"

will this work as a javascript function triggered by a button click? on first attempt I got

teamsmessagesender.html:40
Error sending message to Teams:
X {message: 'Network Error', name: 'AxiosError', code: 'ERR_NETWORK', config: {…}, request: XMLHttpRequest, …}
code
:
"ERR_NETWORK"
config
:
{transitional: {…}, adapter: Array(2), transformRequest: Array(1), transformResponse: Array(1), timeout: 0, …}
message
:
"Network Error"
name
:
"AxiosError"
request
:
XMLHttpRequest {onreadystatechange: null, readyState: 4, timeout: 0, withCredentials: false, upload: XMLHttpRequestUpload, …}
stack
:
"AxiosError: Network Error\n at w.onerror (https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js:1:23886)"
[[Prototype]]
:
Error