to the teaching style, focusing on what interviewers actually look for in candidates. specific topic
function flattenArray(arr) let result = []; arr.forEach(element => if (Array.isArray(element)) result = result.concat(flattenArray(element)); else result.push(element); ); return result; console.log(flattenArray([1, [2, [3, 4], 5], 6])); // [1, 2, 3, 4, 5, 6] Use code with caution. 7. Implement a Debounce function.
Retaining state across asynchronous operations or event listeners. javascript happy rawat javascript interview questions pdf free best
Hey everyone! 👋
Array.prototype.myMap = function(callback) let tempArray = []; for (let i = 0; i < this.length; i++) // 'this' refers to the array calling myMap tempArray.push(callback(this[i], i, this)); return tempArray; ; // Test const arr = [1, 2, 3]; const double = arr.myMap((num) => num * 2); console.log(double); // [2, 4, 6] Use code with caution. Polyfill for Array.prototype.filter to the teaching style, focusing on what interviewers
Hoisting is a mechanism where variable and function declarations are moved to the top of their containing scope before code execution. However, they behave differently based on how they are declared: javascript
To succeed in an interview, Happy Rawat emphasizes mastering the following 11 core topics: JavaScript Interview Masterclass: Top 300 Questions (2026) Implement a Debounce function
Array.prototype.myMap = function(callback) let temp = []; for (let i = 0; i < this.length; i++) // 'this' refers to the array calling myMap temp.push(callback(this[i], i, this)); return temp; ; const nums = [1, 2, 3]; const doubled = nums.myMap(num => num * 2); // [2, 4, 6] Use code with caution. 10. Implement Debouncing
Practical examples, code screenshots, diagrammatic explanations. 1. JavaScript Fundamentals (Basics) What is JavaScript?
The difference between == (loose equality) and === (strict equality).