JavaScript: Count the occurrence of a substring in a string - w3resource
How do you check if one string contains a substring in JavaScript? – O'Reilly
Check if a String contains a Substring in JavaScript | bobbyhadz
JavaScript Substring Method | refine
Check if a string contains a substring using indexOf() in JavaScript
How do you check if one string contains a substring in JavaScript? – O'Reilly
How to Check if a String Contains a Substring? indexOf(), contains() and custom implementation • Crunchify
python - How to determine whether a substring is in a different string - Stack Overflow
Check if a String Contains a Substring in JavaScript - Mastering JS
Count the Number of Occurrences of a given Substring in a String - Studytonight
JavaScript cheat-sheet : String's Methods | by Kevin Comba Gatimu | Medium
37 - Most Important String Methods In JavaScript - YouTube
String Manipulation Techniques in Javascript | by Hemanth Raju | JavaScript in Plain English
14 Most useful JavaScript String Methods | by Abdullah Imran | Medium
How to check String contains a text in Java? contains() and indexOf() Example | Java67
How to Use the Substring Method in Javascript (Code Examples)
Find JavaScript Substring After Character (3 Ways)
Check if a string contains a specific word in JavaScript
Check String Contains a Specific Word using JavaScript
Check If Python String Contains Substring
