Text Processing with JavaScript

Recipe 3

Matching the Beginning or End of a String with startsWith() and endsWith()

Task

Let’s assume you have a database of articles about pet care and your task is to compile a list of questions that are answered in the articles. Suppose the articles are formatted in the Markdown language and the questions are all in level 2 heading tags (preceded with ##).

How would you write a code that distinguishes a heading from a normal sentence? And what would you use if you wanted to filter those that are questions? You need a solution that lets you check the characters at the beginning and end of a string.

Solution

First, we’ll use the startsWith() method to determine if the string begins with ##:

part_1/matching_with_startsWith_endsWith/startsWith_endsWith_ex1.js ...