Special symbols for modifying the number of matches

The expression mentioned in the previous essay, whether it is an expression that matches only one character, or an expression that matches any of several characters, can only be matched once. If you use an expression plus a special symbol that modifies the number of matches, you can repeat the match without repeating the expression.

Use the method : The number modifier is placed behind the decorated expression. For example: "[BCD][BCD]" can be written as "[Bcd]{2}".

Example 1:

Expression "/d+/.? /d* "in matching It costs $12.5", the result of the match was: "12.5", the match to the position is: start at 10, end at 14.

Example 2:

When the expression "Go{2,8}gle" matches the "Ads by Goooooogle", the result of the match is: "Goooooogle", the match to the position is: start at 7, end at 17.

Special symbols for modifying the number of matches