diff --git a/dev/index.php b/dev/index.php
index 5b0fd4a..4d5caad 100644
--- a/dev/index.php
+++ b/dev/index.php
@@ -54,6 +54,13 @@
 		</style>
 		
 		<script type="text/javascript"><?php
+			foreach(scandir("../src/helper") as $one_file){
+				if(is_file("../src/helper/" . $one_file)){
+					require("../src/helper/" . $one_file);
+					echo("\n");
+				}
+			}
+			
 			foreach(scandir("../src") as $one_file){
 				if(is_file("../src/" . $one_file)){
 					require("../src/" . $one_file);
diff --git a/src/helper/enum.js b/src/helper/enum.js
new file mode 100644
index 0000000..e949c78
--- /dev/null
+++ b/src/helper/enum.js
@@ -0,0 +1,14 @@
+class Enum {
+	constructor(...keys){
+		keys.forEach((key, i) => {
+			this[key] = i;
+		});
+		Object.freeze(this);
+	}
+	
+	*[Symbol.iterator](){
+		for(let key of Object.keys(this)){
+			yield key;
+		}
+	}
+}
\ No newline at end of file