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Coding Challenges
Explore our collection of coding challenges and practice questions. Filter by topic, difficulty, and more to find the perfect challenges for your learning journey.
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Arrays
Working with Object Properties in JavaScript
Easy
JavascriptObjectsProperties
Adding Methods to JavaScript Objects
Easy
JavascriptObjectsMethods
Understanding Equality Operators (== vs ===)
Beginner
JavascriptData typesEquality comparison
Transforming Object Properties in JavaScript
Hard
JavascriptObjectsTransformation
How to Calculate Total Score from Array of Objects Using JavaScript Reduce Method
Medium
ArraysReduceJavascript+1
How to Extract Unique Tags from Array of Objects Using JavaScript Reduce Method
Medium
ArraysReduceJavascript+2
Calculate Shopping Cart Total with 20% Discount Using JavaScript Reduce Method
Easy
ArraysReduceJavascript+2
Provide Default Values Using Nullish Coalescing Operator (??)
Easy
JavascriptNullishFundamentals
Make Decisions Using the Switch Statement
Beginner
JavascriptControl flowSwitch
JavaScript While Loop Not Incrementing Counter Variable - Infinite Loop Issue
Beginner
JavascriptVariablesIncrement+3
JavaScript Type Coercion Risk in Payment Processing: Loose Equality vs Strict Comparison
Beginner
JavascriptType coercionOperators+2
JavaScript Array Methods: Fixing Task List Manipulation Logic with push, shift, and includes
Beginner
JavascriptArraysArray methods+1
How Does Variable Reassignment Work in JavaScript: Number to String Conversion
Beginner
JavascriptVariablesTypes
Understanding JavaScript Arithmetic Operations: Step-by-Step Value Assignment and Multiplication
Beginner
JavascriptMathOperators+1
How to Concatenate Strings in JavaScript Using Different Methods
Beginner
JavascriptStringsConcatenation