Answers: no, yes.

• In the script Java it doesnt match anything, because [^script] means any character except given ones. So the regexp looks for "Java" followed by one such symbol, but theres a string end, no symbols after it.

  alert( "Java".match(/Java[^script]/) ); // null

• Yes, because the [^script] part matches the character "S". Its not one of script. As the regexp is case-sensitive (no i flag), it treats "S" as a different character from "s".

  alert( "JavaScript".match(/Java[^script]/) ); // "JavaS"