Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to count the number of occurrences of a character in a string in JavaScript?
To count the number of occurrences of a character in a string, try to run the following code −
Example
<!DOCTYPE html> <html> <body> <script> function displayCount() { setTimeout(function() { var str = document.getElementById('str1').value; var letter = document.getElementById('letter1').value; letter = letter[letter.length-1]; var lCount; for (var i = lCount = 0; i < str.length; lCount += (str[i++] == letter)); document.querySelector('p').innerText = lCount; return lCount; }, 50); } </script> Enter String: <input type="text" id="str1"><br><br> Enter Letter: <input onkeypress="displayCount()" type="text" id="letter1"><br><br> <button onclick="displayCount()">Click for Result</button><br><br> result= <p></p> </body> </html>
Updated on: 2020-06-17T06:39:27+05:30
809 Views
Advertisements