Longest Substring Without Repeating Characters - LeetCode

Google Spreadsheet Substring Extraction: Easy Guide & Video

Substring in Java: Examples, Methods and Applications

How to check if a string contains a substring in JavaScript

How do you check if one string contains a substring in JavaScript?

JavaScript String Contains: Step-By-Step Guide

Substring Matching Attribute Selectors - "Contains"

(Check substrings) You can check whether a string is a substring of another string by using the f ind method in the str class. Write your own function to implement find. Write a program that prompts the user to enter two strings and then checks whether the first string is a substring of the second string. | Numerade

Matching literal Strings | Regular expressions for The Absolute Beginner