JavaScript String Regular Expressions – Part 3 Introduction This is the third part of my series JavaScript String Regular Expressions. In this part of the series, we continue to analyze patterns in JavaScript Regular Expressions using the string object. Matching Repetitions In the subject string, characters or groups of characters may repeat themselves. We shall talk about groups of characters, as a topic, later. For now, let us concentrate on a single character repeating itself. There are... Sign in to see full entry.