Javascript lookaheads and lookbehinds

added by JavaScript Kicks
8/29/2018 8:28:01 AM


Regular expressions (also called regex) are patterns used to match character combinations in strings. They help us work with strings in a very performant way. By formulating regex with a special syntax, you can: search text in a string replace substrings in a string extract information from a string If all this is completely new to you, take a look at the mdn web docs for more info.