// After creating `icon` or `bubble`: icon.addEventListener('mouseenter', function(){ showTooltip(icon, tip); }); icon.addEventListener('mouseleave', hideTooltip); var icon = document.createElement('span'); icon.className = 'trs-info-icon'; icon.setAttribute('aria-label','More info for ' + lbl); icon.textContent = 'ⓘ'; icon.addEventListener('click', function () { showTooltip(icon, tip); }); icon.addEventListener('mouseenter', function(){ showTooltip(icon, tip); }); icon.addEventListener('mouseleave', hideTooltip);