add function to test valid URL

scripts/utils/URLs.js

@@ -11,6 +11,25 @@ class URLs {
 	static clean(URL) {
 		return((URL.trim().replace(/(^\w+:|^)\/\//, ``).split(`?`))[0]);
 	}
+
+	/*
+	Check if the URL is valid through checking its patterns. 
+	
+	@param {string} location the URL to check
+	@return {boolean} the state
+	*/
+	static test(location) {
+		let STATE = false;
+		
+		// Convert to URL object.
+		try {
+			STATE = !!(new URL(location));
+		} catch(err) {
+			STATE = false;
+		}
+
+		return STATE;
+	}
 }
 
 export {URLs};