Regular Expression ToolRegExp Global Multiline Ignore case Sample Text ? Result . any character except a newline \d any decimal digit \D any non-digit \s any whitespace character \S any non-whitespace characte \w any alphanumeric character \W any non-alphanumeric character \number the contents of the group with the given number * zero or more of the preceding block *? zero or more of the preceding block (non-greedy) + o
