[Javascript Regex] Recommending Alternative ID
Task Requirements The Rules for the ID Length of the ID must be 3 to 15 characters.
Only alphanumeric(lowercase) characters and [ -] , [ _ ], [ . ] are allowed.
[ . ] can not be used at the beginning and the end, and cannot be used consecutively.
Seven Steps in Creating Recommended ID Step 1. Change all the uppercase letters to lowercase.