JavaScript Coding Problems

JavaScript programming challenges

64
Total Problems
29
Easy
29
Medium
6
Hard
Start Practicing
JS

Master DSA Topics - February, 2026

Practice problems across 75+ categories

JavaScript Coding Problems

Practice problems frequently asked at JavaScript 64 problems | 29 Easy | 29 Medium | 6 Hard

# Problem Difficulty Topics
16 Convert Callback Based Function to Promise Based Function Medium
JavaScript
17 Convert JSON String to Object Hard
JavaScript
18 Convert Object to JSON String Medium
JavaScript
19 Counter Easy
JavaScript
20 Counter II Easy
JavaScript
21 Create Hello World Function Easy
JavaScript
22 Create Object from Two Arrays Easy
JavaScript
23 Curry Medium
JavaScript
24 Custom Interval Medium
JavaScript
25 Date Range Generator Medium
JavaScript
26 Debounce Medium
JavaScript
27 Deep Merge of Two Objects Medium
JavaScript
28 Design Cancellable Function Hard
JavaScript
29 Differences Between Two Objects Medium
JavaScript
30 Event Emitter Medium
JavaScript
Showing 16-30 of 64
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public class MyFirstJavaProgram { Edit & Run

   /* This is my first java program.
    * This will print 'Hello, World!' as the output
    */

   public static void main(String []args) {
      System.out.println("Hello, World!"); // prints
   }
}

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