submission-tooltips.js

export default function generateTooltips(){

    // get the submisttions titles
    const titles = Array.prototype.slice.call(document.querySelectorAll('.js-title'));

    // if the tile has been truncated...
    titles.forEach(function(title){
        if (title.textContent.indexOf('...') >= 0) {
            addToolTip(title);
        }
    });

    // ...add a tooltip class
    function addToolTip(title){
        title.classList.add('has-tooltip');
    }
}