submit.js

/*jshint esversion: 6 */
(() => {
    const button = document.querySelector('#submit-button');
    if (button) addSubmitButtonListener();

    function addSubmitButtonListener() {
        document.querySelector('#submit-button').onclick = () => {
            const name = document.querySelector('#speaker-name').value;
            const bio = document.querySelector('#speaker-bio').value;
            const title = document.querySelector('#talk-title').value;
            const abstract = document.querySelector('#talk-abstract').value;

            const subject = `[workshop proposal] ${title}`;
            const body = `Hi Program Committee,` +
            `\n\n` +
            `I would like to submit a talk proposal for the W3C Smart Cities Workshop.` +
            `\n\n` +
            `Name: ${name}` +
            `\n\n` +
            `Bio: ${bio}` +
            `\n\n` +
            `Talk title: ${title}` +
            `\n\n` +
            `Talk abstract: ${abstract}`+
            `\n\n` +
            `Best regards,\n${name}`;

            window.location.href =
                'mailto:group-smartcity-ws-pc@w3.org' +
                '?subject=' + encodeURIComponent(subject) +
                '&body=' + encodeURIComponent(body);
        };
    }
})();