Walkthrough for Root Me/Challenges/Web Client
Javascript – Obfuscation 1
When you open the page, you should be able to see something like this. Open the Developer Tools to look around the code. Notice that the password is obfuscated.

Try using URL Decoder to decode the password.

Test if the page accepts the decoded password.

Submit the same password to challenge’s validation section. You will get a confirmation like this if successful.
