Common examples of regular expressions determine for example if a given string is an email address or a phone number, or they can be used to verify if a password fulfills a certain complexity.

It is a common scenario to assign a variable to another variable only if it is not equal to null. It can be done in two ways, first one is the most common way, second one is the idiomatic way. I am ...

Regular expressions may have flags that affect the search. There are only 6 of them in JavaScript: pattern:i: With this flag the search is case-insensitive: no difference between A and a (see the ...