Web Interactive Challenges

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In this course, You will learn how to elevate your web development skills with our interactive JavaScript challenges. From DOM manipulation to advanced algorithms, tackle 130+ hands-on labs designed for all levels. Perfect for aspiring developers in the US and Europe looking to build real-world coding expertise.

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Exercises

Index	Name	Difficulty	Practice
001	One Plus One Equals?	Intermediate	Start Challenge
002	How Many Digits Can You See?	Beginner	Start Challenge
003	Random Number Generator	Beginner	Start Challenge
004	Equal or Unequal	Beginner	Start Challenge
005	Determine Data Type Accurately	Intermediate	Start Challenge
006	Reverse String Array	Beginner	Start Challenge
007	Generate an Array	Beginner	Start Challenge
008	Implement Array Deduplication in JavaScript	Beginner	Start Challenge
009	Rearrange Array Zeroes In-Place	Intermediate	Start Challenge
010	Flatten an Array	Beginner	Start Challenge
011	Three-Line Love Letter	Beginner	Start Challenge
012	Palindrome String Verification in JavaScript	Intermediate	Start Challenge
013	Split Array by Specified Length	Beginner	Start Challenge
014	Handle Sensitive Words	Beginner	Start Challenge
015	Who Is the Longest	Beginner	Start Challenge
016	Implement HTML Escape	Beginner	Start Challenge
017	Implement Space Replacement Function	Beginner	Start Challenge
018	Remove All Adjacent Duplicates in String	Intermediate	Start Challenge
019	Ascending Array Sorting	Beginner	Start Challenge
020	Squares of a Sorted Array	Intermediate	Start Challenge
021	Remove Duplicates from Sorted Array	Beginner	Start Challenge
022	Removing Elements from Array In-Place	Beginner	Start Challenge
023	Search Insert Position	Intermediate	Start Challenge
024	Simple Calculator with Encapsulated Functions	Beginner	Start Challenge
025	Personal Tax Calculator Functions	Beginner	Start Challenge
026	Optimize Web Interactions with JavaScript Debounce	Intermediate	Start Challenge
027	Implement the apply function	Beginner	Start Challenge
028	Implement an Increment Function	Beginner	Start Challenge
029	Implement the call function	Beginner	Start Challenge
030	Implementation of setInterval Using setTimeout	Beginner	Start Challenge
031	Implement Array Reduce in JavaScript	Beginner	Start Challenge
032	JSON Generator Tool Development	Beginner	Start Challenge
033	Check if an Object Is Empty	Beginner	Start Challenge
034	Parse URL into an Object	Beginner	Start Challenge
035	Checking If Two Objects are Equal	Beginner	Start Challenge
036	Implement Deep Cloning	Beginner	Start Challenge
037	Implement Custom Object.is Method	Beginner	Start Challenge
038	The Page Has Changed	Beginner	Start Challenge
039	Depth First Traversal of DOM Tree	Intermediate	Start Challenge
040	Breadth-First Traversal of DOM Tree	Intermediate	Start Challenge
041	Dynamic Tab Switching with JavaScript	Beginner	Start Challenge
042	Video Bullet Comments	Beginner	Start Challenge
043	Fibonacci Number Calculation	Intermediate	Start Challenge
044	Implement Binary Search Algorithm	Intermediate	Start Challenge
045	Climb Stairs with JavaScript	Intermediate	Start Challenge
046	Power of Two	Intermediate	Start Challenge
047	Square Root of x	Intermediate	Start Challenge
048	Implement Stack Using Queues	Intermediate	Start Challenge
049	Diameter of Binary Tree	Intermediate	Start Challenge
050	Find kth smallest element in BST	Intermediate	Start Challenge
051	Balanced Binary Tree	Intermediate	Start Challenge
052	Flatten Binary Tree to Linked List	Intermediate	Start Challenge
053	Complete Binary Tree Node Count	Intermediate	Start Challenge
054	Average of Levels in Binary Tree	Intermediate	Start Challenge
055	Binary Tree Right Side View	Intermediate	Start Challenge
056	Subtree of Another Tree	Intermediate	Start Challenge
057	Binary Tree Paths	Intermediate	Start Challenge
058	Validate Binary Search Tree	Intermediate	Start Challenge
059	Implement Root-to-Leaf Path Sum in JavaScript	Intermediate	Start Challenge
060	Sum of Left Leaves	Intermediate	Start Challenge
061	Minimum Depth of Binary Tree	Intermediate	Start Challenge
062	Symmetric Binary Tree	Intermediate	Start Challenge
063	Binary Tree Equality Check	Intermediate	Start Challenge
064	Merge Binary Trees	Intermediate	Start Challenge
065	Maximize Robbery Without Triggering Alarm	Intermediate	Start Challenge
066	House Robber II	Intermediate	Start Challenge
067	House Robber III	Intermediate	Start Challenge
068	Minimum Coin Change Problem Solver	Intermediate	Start Challenge
069	Coin Change II	Intermediate	Start Challenge
070	Compute Distinct Paths in Grid	Intermediate	Start Challenge
071	Unique Paths II	Beginner	Start Challenge
072	Subsequence Counting in Python	Intermediate	Start Challenge
073	Minimum Delete Operations of Two Strings	Intermediate	Start Challenge
074	Optimal Stock Buying and Selling	Beginner	Start Challenge
075	Optimal Stock Trading Timing	Intermediate	Start Challenge
076	Optimal Stock Trading with Fees	Intermediate	Start Challenge
077	Combine Numbers from Range	Intermediate	Start Challenge
078	Combination Sum with Distinct Integers	Intermediate	Start Challenge
079	Generating Subsets of Integer Arrays	Intermediate	Start Challenge
080	Generating All Permutations of Distinct Integers	Intermediate	Start Challenge
081	Implement Word Search in 2D Grid	Beginner	Start Challenge
082	Restore IP Addresses	Intermediate	Start Challenge
083	Solve Two Sum II in Sorted Array	Beginner	Start Challenge
084	Solve Three-Sum Problem in Array	Intermediate	Start Challenge
085	Minimum Size Subarray Sum	Intermediate	Start Challenge
086	Finding the Werewolf	Beginner	Start Challenge
087	Secret That Cannot Be Told	Beginner	Start Challenge
088	Slot Machine Application Completion	Beginner	Start Challenge
089	Alien Message Translator Program	Beginner	Start Challenge
090	Collecting Bamboo Slip Fragments	Beginner	Start Challenge
091	Building Tall Buildings on Flat Ground	Intermediate	Start Challenge
092	Division and Ranking	Beginner	Start Challenge
093	Service Years Statistics	Beginner	Start Challenge
094	Annual Star Project	Beginner	Start Challenge
095	Universal Synthesis Workbench	Beginner	Start Challenge
096	Icelandic Patronymic Name Checker	Beginner	Start Challenge
097	Little Rabbit Climbing Stairs	Intermediate	Start Challenge
098	Qian Kun Mental Method	Beginner	Start Challenge
099	Ideal Stock Trading Window	Beginner	Start Challenge
100	Maximum Subarray Sum	Beginner	Start Challenge
101	Solving Large Integer Addition Challenge	Beginner	Start Challenge
102	Campus Card Issuance Form Validation	Beginner	Start Challenge
103	LabEx Campus Card	Beginner	Start Challenge
104	Fix Registration Verification Issue	Beginner	Start Challenge
105	Package Delivery Received	Intermediate	Start Challenge
106	Skip You Next Time	Beginner	Start Challenge
107	Parsing and Highlighting Text Content	Beginner	Start Challenge
108	ISBN Conversion and Generation	Beginner	Start Challenge
109	Password Strength Checker	Beginner	Start Challenge
110	Simplify Unix-Style File Paths	Beginner	Start Challenge
111	Template String Parsing Implementation	Beginner	Start Challenge
112	Fitness Survey Form with HTML, CSS, JavaScript	Beginner	Start Challenge
113	Real-Time Friend Circle Publishing	Beginner	Start Challenge
114	Word Occurrences in Article	Beginner	Start Challenge
115	Personalized Recommendation System with Node.js	Beginner	Start Challenge
116	Little Rabbit Finds Carrots	Beginner	Start Challenge
117	Mall Management System	Intermediate	Start Challenge
118	Image Watermark Generation	Beginner	Start Challenge
119	Super Powered Heroes League	Beginner	Start Challenge
120	Course Scheduling Wizard	Intermediate	Start Challenge
121	This Is a Browser	Beginner	Start Challenge
122	Implement the New Operator	Beginner	Start Challenge
123	Locate Unique Integer in Array	Intermediate	Start Challenge
124	Evaluate Reverse Polish Notation	Beginner	Start Challenge
125	Thief Retires Placeholder	Intermediate	Start Challenge
126	Partition Palindrome Substrings	Beginner	Start Challenge
127	Distribute Cookies to Maximize Satisfaction	Intermediate	Start Challenge
128	Maximum Value in Each Row	Intermediate	Start Challenge
129	Validate Bracket String Correctness	Beginner	Start Challenge
130	Find in 2D Array	Intermediate	Start Challenge

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