Editing JavaScript (section)

==== Regular expressions ====
{{Main|Regular expression}}

JavaScript supports [[regular expression]]s for text searches and manipulation.{{r|n=Haverbeke2024|p=139}}

===== Promises =====
{{Main|Futures and promises}}

A built-in Promise object provides functionality for handling promises and associating handlers with an asynchronous action's eventual result. JavaScript supplies combinator methods, which allow developers to combine multiple JavaScript promises and do operations based on different scenarios. The methods introduced are: Promise.race, Promise.all, Promise.allSettled and Promise.any.

===== Async/await =====
{{Main|Async/await}}

Async/await allows an asynchronous, non-blocking function to be structured in a way similar to an ordinary synchronous function. Asynchronous, non-blocking code can be written, with minimal overhead, structured similarly to traditional synchronous, blocking code.