google_form_to_slack_channel.js

// Unique Slack WebHook to post payload (obtained from Slack API website)
// Replace 'XXX' with the unique WebHook URL generated for your application

var webhookUrl = 'https://hooks.slack.com/services/XXX';

// Function that sends payload message to Slack upon form submit

function onSubmit(e) {
    
	// Get most recent form submission as array of fields

    var response = e.response.getItemResponses();

    // Set each item in array response as separate variable

    var recruiter = e.response.getRespondentEmail();
    var offer_type = response[0].getResponse();
    var candidate = response[1].getResponse();
    var candidate_position = response[2].getResponse();
    var candidate_level = response[3].getResponse();
    var offer_salary = response[4].getResponse().toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
    var offer_equity = response[5].getResponse();

    // Create payload with a Slack-style message attachment using values for each variable

    var payload = {
        "payload": '{"attachments": [{"fallback": "A new offer.", "color": "#36a64f", "pretext": "<!channel> Hey everyone! There is a new offer to discuss!", "author_name": "Recruiter: ' + recruiter + '", "title": "Candidate", "text": "' + candidate + '", "fields": [{"title": "Position", "value": "' + candidate_position + '", "short": true }, {"title": "Level", "value": "L' + candidate_level + '", "short": true }, {"title": "Salary", "value": "$' + offer_salary + '", "short": true }, {"title": "Equity", "value": "' + offer_equity + '%", "short": true } ] } ] }'
    }

    // Method for posting payload

    var options = {
        "method": "post",
        "payload": payload
    };

    // Send payload to Slack WebHook

    UrlFetchApp.fetch(webhookUrl, options);
};