Software Engineering

1,239 learners

Easy Interview Coding Practice in JavaScript

Start your coding interview preparation with easy-level JavaScript problems. This course will help you build a solid foundation by solving common problems like reversing a string, finding the maximum number in an array, and checking for prime numbers. These exercises will enhance your problem-solving skills and boost your confidence for the coding interviews.

JavaScript

See path

5 lessons

25 practices

3 hours

Course details

String Manipulation Basics

Preview

Find Vowel Positions

Shift Letters in a String by One

String Case Transformation Using ASCII Values

Replace Character in a String Without Built-In Methods

Swap Adjacent Characters in a String

Check if a String is a Palindrome without Built-in Methods

Next Course: Interview Practice with Classic Coding Questions in JavaScript

Turn screen time into skills time

Practice anytime, anywhere with our mobile app.

Join the 1M+ learners on CodeSignal

Be a part of our community of 1M+ users who develop and demonstrate their skills on CodeSignal

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Easy Interview Coding Practice in JavaScript

Course details

Unit 16 practices44 min

Unit 24 practices32 min

Unit 35 practices38 min

Unit 45 practices38 min

Unit 55 practices38 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community