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
How to Implement Retry Logic for Failed API Fetch Requests in JavaScript
Medium
JavascriptFunctionsError handling+1
Understanding Object Property Modification with const in JavaScript: Mutability vs Immutability
Easy
ConstObjectsImmutability
JavaScript Type Coercion: What Happens When Adding String '5' and Number 3
Easy
FunctionsType coercionString manipulation
Understanding Array Reassignment vs Push Method in JavaScript
Easy
ArraysMutabilityPush+1
JavaScript Array Sort Not Working: How to Correctly Sort Objects by Priority Value
Medium
ArraysSortingHigher order functions+1
How to Filter and Display Tasks with Multiple Status Types in JavaScript
Medium
ArraysReal world applicationsMap+1
JavaScript: Calculate Total Price in Shopping Cart Using Array Reduce Method
Medium
ArraysReduceAccumulators
JavaScript Word Counter Not Handling Multiple Spaces and Punctuation Correctly
Easy
FilterStringsSplit
Why is my JavaScript page view counter not incrementing correctly when tracking undefined pages?
Easy
ObjectsIncrement
How to Display Chat Messages Separately Using JavaScript Array Map Method
Medium
ArraysMapStrings
How to Use Promise.all to Fetch Multiple API Endpoints Simultaneously in JavaScript
Medium
Async programmingPromisesError handling+1
JavaScript Array Reduce Method: Benefits for Data Aggregation and Object Transformation
Medium
ArraysReduceIteration+1
How to Dynamically Add Methods to JavaScript Classes Using Prototypes
Hard
ClassesPrototypesMethods
JavaScript: Understanding the Difference Between Object.freeze() vs Object.seal() Methods
Easy
ObjectsImmutabilityJavascript fundamentals
How to Efficiently Flatten Nested Arrays in JavaScript Using Array Methods
Easy
ArraysReduceFlat+1