Implement toUpperSnakeCase function to convert strings to UPPER_SNAKE_CASE

Author: Payman IB

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,3 +14,8 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+function toUpperSnakeCase(str) {
+
+    return str.toUpperCase().replace(/ /g, '_');
+}
+console.log(toUpperSnakeCase("it's done!"));