Regular expression can be constructed using a literal which consists of a pattern enclosed between slashes, as follows: re = /ab+c/;.
It is probably a good idea to store a regex in a variable if you plan to use the regular expression multiple times. This prevents the
requirement to compile the regular expression each time.
| Flag | Description |
|---|---|
i |
Case-insensitive search. |
m |
Multi-line search. |
s |
Allows . to match newline characters. |
| Function | Description |
|---|---|
| test | Test if a given string has a match with the regular expression. |
| Function | Description |
|---|---|
| is_regex | Test if a given value is of type regex. |
| regex | Create a new regex. |
| str.replace | Replace one or more occurrences of a regex pattern in a string. |
| str.split | Split a string based on a regex pattern. |
This code uses a regular expression for an oversimplified email check:
// Note: the email check is oversimplified, do not use in production
email_test = /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/;
/* example usage of our 'email_test' */
email_test.test('info@thingsdb.io');
Return value in JSON format
true