Expected ']' in regular expression (JavaScript)

You attempted to create a character class for a regular expression match, but did not include the right bracket. Individual literal character combinations can be assembled into character classes by placing them within brackets. A character class matches any one character it contains. For example, /[abc]/ matches any one of the letters "a", "b", or "c".

To correct this error

• Add the right bracket to the regular expression.

  Note

  If you want to match a single bracket, escape it with a backslash - \[ - so it is not interpreted as a special character by JavaScript.

See also

Regular Expression Object
Regular Expression Syntax (JavaScript)