function updateOwnerEmail() { var name = this.domainName; document.getElementById("owneremail-"+name).innerHTML = this.responseText; } function showOwnerEmail(name) { document.getElementById("owneremail-"+name).innerHTML = "Loading..."; var req = new XMLHttpRequest(); req.domainName = name; req.addEventListener("load", updateOwnerEmail); req.open("GET", "/api/get_owner_email?name="+encodeURIComponent(name)); req.send(); }