diff --git a/public/js/domain_check.js b/public/js/domain_check.js
index 129302e..794718f 100644
--- a/public/js/domain_check.js
+++ b/public/js/domain_check.js
@@ -1,23 +1,20 @@
-function updateAvailability() {
-	if (this.responseText === "y") {
-		document.getElementById("avail").innerHTML = "Available!";
-	} else {
-		document.getElementById("avail").innerHTML = "Not available";
-	}
-}
-
 function checkAvailability() {
-	var name = document.getElementById("name").value;
-
-	if (name === "") {
-		document.getElementById("avail").innerHTML = "";
-		return 
+	let name = document.getElementById('name').value;
+	if (name === '') {
+		document.getElementById('avail').innerHTML = '';
+		return false;
 	}
-
-	document.getElementById("avail").innerHTML = "Checking availability...";
-
-	var req = new XMLHttpRequest();
-	req.addEventListener("load", updateAvailability);
-	req.open("GET", "/api/check_availability?name="+encodeURIComponent(name));
-	req.send();
-}
+	document.getElementById('avail').innerHTML = 'Checking availability...';
+	fetch('/api/check_availability?name=' + encodeURIComponent(name), {
+		method: 'GET',
+		mode: 'cors'
+	}).then(g => g.text()).then(g => {
+		if (g === 'y') {
+			document.getElementById('avail').innerHTML = 'Available!';
+		} else {
+			document.getElementById('avail').innerHTML = 'Not available';
+		}
+	}).catch((e) => {
+		document.getElementById('avail').innerHTML = 'Not available';
+	});
+}
\ No newline at end of file