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Regular expressions, often abbreviated as regex or regexp, are powerful tools for pattern matching and string manipulation in JavaScript. While they may seem daunting at first glance, understanding regular expressions can greatly enhance your ability to work with strings in JavaScript.
In this guide, we’ll demystify regular expressions and provide practical examples to help you master this essential skill.
What are Regular Expressions?
At its core, a regular expression is a sequence of characters that define a search pattern. This pattern can be used to match strings, replace parts of strings, or perform other types of string manipulation. Regular expressions are extremely versatile and can be used in a wide range of applications, from simple text processing to complex data validation.
In JavaScript, regular expressions are represented by objects of the built-in RegExp class. You can create a regular expression using either the constructor function or the literal syntax. Here's an example of each:
// Using the constructor function
const regex1…
