Definition and Usage When the ? modifier is set the regular expression finds zero or one of a specific character. Syntax new RegExp(...
Definition and Usage
When the ? modifier is set the regular expression finds zero or one of a specific character.
Syntax
new RegExp("regexp?")OR /regexp?/ |
| Parameter | Description |
| regexp | Required. The rest of the regular expression to use |
Example
In the following code we will do a global search for any substring with a 1 followed by zero or one "0" characters:
var str = "1, 100 or 1000?";
var patt1 = /10?/g; |
The
marked text below shows where the RegExp gets a match:
