Regular Expressions and String Methods

We know what is RegEx and JavaScript object RegExp. In this lesson, we look at the practical aspect of a RegEx and see how it works with string methods.

Introduction

Regular expressions in JavaScript have methods to test and/or execute an expression on a string. It checks for any matching. RegEx, used in string methods, can make queries simpler. Let’s take a look at those methods and eventually do more complicated tasks.

search method

The search method is a string method that takes a query-string as an argument and searches within the string to return the character index at which the query-string starts. It returns “-1” if no match is found.