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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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How to Make JavaScript Event Listener Execute Only Once Using addEventListener
Easy
DomEventsJavascript
How to Implement Memoization in JavaScript Using Closures for Single Execution Functions
Hard
ClosuresMemoizationFunctions+1
How to Implement Debounce Function in JavaScript for Better Performance
Hard
DebounceThrottlingFunctions+1
Understanding JavaScript's 'this' Context When Function is Assigned to Variable
Easy
ThisObjectsJavascript
How to Implement Immediate Execution in JavaScript Debounce Function
Hard
DebounceFunctionsJavascript
JavaScript: Understanding map() vs forEach() - When to Use Each Array Method
Easy
ArraysMapForeach+1
Understanding Async Function Return Values in JavaScript: Promise vs Direct Data
Easy
AsyncPromisesJavascript
JavaScript: How to Execute Promises Sequentially Using Async/Await
Medium
AsyncPromisesSequence+1
Understanding JavaScript Array reduce() with Conditional Logic and Index Parameter
Medium
ReduceArraysJavascript
How to Create a Deep Copy of a Nested JavaScript Object
Medium
ObjectsDeep copyJavascript
Understanding JavaScript Pass by Value: Why Variables Remain Unchanged in Functions
Easy
FunctionsVariablesJavascript
How to Create and Dispatch Custom Events in JavaScript
Medium
DomEventsJavascript
How to Flatten a Nested Array in JavaScript Using Recursion
Medium
ArraysFlatRecursion+1
JavaScript Object Spread Operator: Understanding Property Merge Order and Final Values
Easy
ObjectsSpread operatorJavascript
Understanding JavaScript Event Loop: Order of Execution with Promises and setTimeout
Medium
AsyncEvent loopPromises+1