add u8a to hex

Author: shawntabrizi

index.html

@@ -144,6 +144,15 @@ <h4>Sub-Account Generator</h4>
 							<div type="text" class="form-control" id="subid-subid">Sub-Account
 							</div>
 						</div>
+						<h4>u8 Array to Hex</h4>
+						<div class="input-group">
+							<input type="text" class="form-control" id="u8a-u82h"
+								placeholder="Comma Separated u8a Array">
+							<div class="input-group-prepend">
+								<span class="input-group-text" id="addon-wrapping">&#8644;</span>
+							</div>
+							<input type="text" class="form-control" id="hex-u82h" placeholder="Hex">
+						</div>
 					</div>
 				</div>
 			</div>

utilities.js

@@ -273,3 +273,34 @@ function subAccountId() {
 		console.error(e);
 	}
 }
+
+/* u8a to Hex */
+let u82h = {
+	"u8a": document.getElementById("u8a-u82h"),
+	"hex": document.getElementById("hex-u82h")
+};
+
+u82h.u8a.addEventListener("input", u8a2hex);
+u82h.hex.addEventListener("input", hex2u8a);
+
+function u8a2hex() {
+	try {
+		let array = u82h.u8a.value.replace(/ /g, "").split(",").filter(e => e);
+		let u8array = new Uint8Array(array);
+		u82h.hex.value = u8aToHex(u8array);
+	} catch (e) {
+		u82h.hex.value = "Error";
+		console.error(e);
+	}
+}
+
+function hex2u8a() {
+	try {
+		let array = u82h.hex.value.match(/.{1,2}/g).map(byte => parseInt(byte, 16));
+		let u8a = new Uint8Array(array);
+		u82h.u8a.value = u8a;
+	} catch (e) {
+		u82h.hex.value = "Error";
+		console.error(e);
+	}
+}