1 Introduction (PDF books and Tracker attached in resources ) (37.8 MB)
1 Error Handling- Introduction (9.59 MB)
2 Q87 What is Error Handling in JS (6.37 MB)
3 Q88 What is the role of finally block in JS (9.01 MB)
4 Q89 What is the purpose of the throw statement in JS (11.13 MB)
5 Q90 What is Error propagation in JS (5.23 MB)
6 Q91 What are the best practices for error handling (6.09 MB)
7 Q92 What are the different types of errors In JS (8.04 MB)
1 Objects - Introduction (10.22 MB)
10 Q101 What is the difference between deep copy and shallow copy in JS (23.1 MB)
11 Q102 What is Set Object in JS (18.63 MB)
12 Q103 What is Map Object in JS (9.37 MB)
13 Q104 What is the difference between Map and Object in JS (5.61 MB)
2 Q93 What are Objects in JS (10.56 MB)
3 Q94 In how many ways we can create an object (12.24 MB)
4 Q95 What is the difference between an array and an object (5.23 MB)
5 Q96 How do you add or modify or delete properties of an object (2.86 MB)
6 Q97 Explain the difference between dot notation and bracket notation (9.95 MB)
7 Q98 What are some common methods to iterate over the properties of an object (10.32 MB)
8 Q99 How do you check if a property exists in an object (8.83 MB)
9 Q100 How do you clone or copy an object (13.67 MB)
1 Events - Introduction (10.23 MB)
10 Q113 What is the use of this keyword in the context of event handling in JS (2.91 MB)
11 Q114 How to remove an event handler from an element in JS (6.03 MB)
2 Q105 What are Events How are events triggered (9.92 MB)
3 Q106 What are the types of events in JS (8.82 MB)
4 Q107 What is Event Object in JS (16.85 MB)
5 Q108 What is Event Delegation in JS (12.63 MB)
6 Q109 What is Event Bubbling In JS (11.13 MB)
7 Q110 How can you stop event propagation or event bubbling in JS (10.32 MB)
8 Q111 What is Event Capturing in JS (12.04 MB)
9 Q112 What is the purpose of the event preventDefault() method in JS (6.56 MB)
1 Closures - Introduction (9.97 MB)
2 Q115 Explain the concept of Lexical Scoping (7.46 MB)
3 Q116 What is Closure (10.65 MB)
4 Q117 What are the benefits of Closures (30.87 MB)
5 Q118 What is the concept of Encapsulation in the context of closures (7.93 MB)
6 Q119 What are the disadvantage or limitations of Closures (6.26 MB)
7 Q120 How can you release the variable references or closures from memory (2.82 MB)
8 Q121 What is the difference between a Regular Function and a Closure (5.35 MB)
1 Asynchronous programming – Basics - Introduction (11.53 MB)
2 Q122 What is asynchronous programming in JS What is its use (22.79 MB)
3 Q123 What is the difference between synchronous and asynchronous programming (11.7 MB)
4 Q124 What are the techniques for achieving asynchronous operations in JS (2.7 MB)
5 Q125 What is setTimeout() How is it used to handle asynchronous operations (15.67 MB)
6 Q126 What is setInterval() How is it used to handle asynchronous operations (10.2 MB)
7 Q127 What is the role of callbacks in fetching API data asynchronously (17.62 MB)
8 Q128 What is callback hell How can it be avoided (15.01 MB)
1 Asynchronous Programming - Promises - Introduction (12.12 MB)
2 Q129 What are Promises in jаvascript (19.08 MB)
3 Q130 How to implement Promises in jаvascript (18.29 MB)
4 Q131 When to use Promises in real applications (3.88 MB)
5 Q132 What is the use of Promise all() method (18.07 MB)
6 Q133 What is the use of Promise race() method (11.82 MB)
7 Q134 What is the difference between Promise all() and Promise race() (10.05 MB)
1 Asynchronous Programming – Async Await - Introduction (7.81 MB)
2 Q135 What is the purpose of async await Compare it with Promises (34.11 MB)
3 Q136 Explain the use of async and await keywords in JS (23.57 MB)
4 Q137 Can we use async keyword without await keyword and vice versa (4.8 MB)
5 Q138 How do you handle errors in async await functions (3.18 MB)
1 Browser APIs & Web Storage - Introduction (7.9 MB)
10 Q147 What is the difference between cookies and web storage (8.15 MB)
11 Q148 When to use cookies and when to use web storage (5.57 MB)
2 Q139 What is a window object (5.4 MB)
3 Q140 What are Browser APIs in JS (19.05 MB)
4 Q141 What is Web Storage, and its use How many types of web storage are there (14.08 MB)
5 Q142 What is Local Storage How to store, retrieve and remove data from it (18.06 MB)
6 Q143 What is Session Storage How to store, retrieve and remove data from it (14.36 MB)
7 Q144 What is the difference between LocalStorage and Sessionstorage (17.34 MB)
8 Q145 How much data can be stored in localStorage and sessionstorage (1.77 MB)
9 Q146 What are cookies How do you create and read cookies (13.8 MB)
1 Classes, Constructors, this & Inheritance - Introduction (5.53 MB)
2 Q149 What are Classes in JS (22.23 MB)
3 Q150 What is a constructor (4.81 MB)
4 Q151 What are constructor functions (4.76 MB)
5 Q152 What is the use of this keyword (8.64 MB)
6 Q153 Explain the concept of prototypal inheritance (13.83 MB)
1 ECMAScript & Modules - Introduction (8.83 MB)
2 Q154 What is ES6 What are some new features introduced by it (5.5 MB)
3 Q155 What are Modules in JS (17.56 MB)
4 Q156 What is the role of export keyword (3.81 MB)
5 Q157 What are the advantages of modules (3.38 MB)
6 Q158 What is the difference between named exports and default exports (5.95 MB)
7 Q159 What is the difference between static and dynamic imports (7.44 MB)
8 Q160 What are module bundlers (8.48 MB)
1 Introduction - Basics (22.38 MB)
10 Q9 What are operators What are the types of operators in JS (32.5 MB)
11 Q10 What are the types of conditions statements in JS (21.45 MB)
12 Q11 What is a loop What are the types of loops in JS (8.91 MB)
13 Q12 What are Functions in JS What are the types of function (6.46 MB)
14 Q13 What are Arrow Functions in JS What is it use (11.19 MB)
15 Q14 What are Arrays in JS How to get, add & remove elements from arrays (20.07 MB)
16 Q15 What are Objects in JS (10.54 MB)
17 Q16 What is Scope in jаvascript (9.85 MB)
18 Q17 What is Hoisting in jаvascript (8.56 MB)
19 Q18 What is Error Handling in JS (6.51 MB)
2 Q1 What is jаvascript What is the role of jаvascript engine (16.93 MB)
20 Q19 What is JSON (5.49 MB)
21 Q20 What is asynchronous programming in JS What is its use (22.78 MB)
3 Q2 What are client side and server side (7.84 MB)
4 Q3 What are variables What is the difference between var, let, and const (21.72 MB)
5 Q4 What are some important string operations in JS (20.37 MB)
6 Q5 What is DOM What is the difference between HTML and DOM (18.14 MB)
7 Q6 What are selectors in JS (5.44 MB)
8 Q7 Difference getElementById, getElementsByClassName and get elementsByTagName (26.36 MB)
9 Q8 What are data types in JS (7.58 MB)
1 Security & Performance - Introduction (8.17 MB)
2 Q161 What is eval() function in JS (3.14 MB)
3 Q162 What is XSS (Cross-Site Scripting) attack (5.49 MB)
4 Q163 What is SQL Injection attack (3.54 MB)
5 Q164 What are some best practices for security in JS (5.93 MB)
6 Q165 What are the best practices for improving performance in JS (13.75 MB)
1 Scenario based – Tricky Short Questions - Introduction (21.42 MB)
2 Q166- Q185 (51.94 MB)
1 Scenario based – Feature Development Questions - Introduction (14.02 MB)
10 Q194 How to use JS to dynamically update date in real time on webpage (10.24 MB)
11 Q195 Prevent a form from being submitted without required fields being filled (5.26 MB)
2 Q186 How to validate user input as they type in a form (10.85 MB)
3 Q187 How to implement pagination for displaying large sets of data (14.4 MB)
4 Q188 How to implement drag-and-drop functionality for elements on a web page (8.68 MB)
5 Q189 Feature that allows users to search for specific items in a large dataset (7.61 MB)
6 Q190 Feature that allows users to perform live search suggestions as they type (11.67 MB)
7 Q191 How to implement a real-time chat application using JS (23.16 MB)
8 Q192 Create an infinite scrolling using JS when a user reaches the webpage (10 MB)
9 Q193 Implement toggle switch to change the theme(lightdark mode) of a website (9.01 MB)
1 Coding - Introduction (14.48 MB)
10 Q204 Write a function to calculate the factorial of a number (9.22 MB)
11 Q205 Write a program to remove all whitespace characters from a string (13.61 MB)
12 Q206 Write a function to find the sum of all elements in an array (3.88 MB)
13 Q207 Write a function to find the average of an array of numbers (3.14 MB)
14 Q208 Write a function to sort an array of numbers in ascending order (25.48 MB)
15 Q209 Write a function to check if an array is sorted in ascending order or not (12.97 MB)
16 Q210 Write a function to merge two arrays into a single sorted array (8.62 MB)
17 Q211 Write a function to remove a specific element from an array (14.45 MB)
18 Q212 Write a function to find the second largest element in an array (7.34 MB)
19 Q213 Write a function to reverse the order of words in a given sentence (4.79 MB)
2 Q196 Write a function that returns the reverse of a string (15.55 MB)
20 Q214 Function to find the longest common prefix among an array of strings (32.85 MB)
21 Q215 Write a function to find the intersection of two arrays (11.85 MB)
22 Q216 Write a function to calculate the Fibonacci sequence up to a given number (14.4 MB)
3 Q197 Write a function that returns the longest word in the sentence (15.52 MB)
4 Q198 Function that checks whether a given string is a palindrome or not (7.92 MB)
5 Q199 Write a function to remove duplicate elements from an array (33.74 MB)
6 Q200 Write a function that checks whether two strings are anagrams or not (13.29 MB)
7 Q201 Write a function that returns the number of vowels in a string (10.65 MB)
8 Q202 Write a function to find the largest number in an array (12.54 MB)
9 Q203 Write a function to check if a given number is prime or not (16.38 MB)
1 HTML - CSS - Bootstrap - Introduction (28.81 MB)
1 Q What is HTML Differences between HTML & HTML5 Advantages of HTML5 (33.6 MB)
2 Q What is the difference between HTML and XHTML (18.98 MB)
3 Q What is the role of DOCTYPE in HTML (9.7 MB)
4 Q What if you remove !DOCTYPE html from your HTML (2.36 MB)
5 Q Difference between Head & Body in HTML Where to place JS link reference (18.3 MB)
6 Q What is Title Tag in HTML What are the 4 advantages of Title tag (11.02 MB)
7 Q What are Meta Tags What are the 5 types of meta tags (23.41 MB)
1 2 HTML Elements & Tags – Part I - Introduction (18.15 MB)
2 Q What are HTML elements What is the difference between Element & Tag (19.48 MB)
3 Q What are the roles and uses of the div element in HTML (13.14 MB)
4 Q What is the difference between div and span element (4.45 MB)
5 Q What is the role of p, a, br, hr, em, img, input & button ele (15.17 MB)
6 Q What is the role of header, main, section, footer & address elements in HTML (13.73 MB)
7 Q What is the role of Heading tags in HTML How does it impact SEO (26.74 MB)
8 Q What is the difference between section & article elements (13.65 MB)
1 3 HTML Elements & Tags – Part II - Introduction (17.66 MB)
2 Q What are Root, Parent, Child & Nested elements (14.14 MB)
3 Q What are Empty Elements (8.29 MB)
4 Q What are Semantic Elements in HTML Is div a semantic element (13.02 MB)
5 Q Can HTML tags be written in Uppercase (4.6 MB)
6 Q What are the 3 differences between Block-Level and Inline Elements (12.31 MB)
7 Q List all Block-Level & Inline Elements in HTML (12.3 MB)
1 4 HTML Attributes - Introduction (9.98 MB)
2 Q What are HTML Attributes What are the Types of HTML attributes (10.15 MB)
3 Q What are the Id, Style & Class attributes of an element When to use what (16.48 MB)
4 Q What will happen if two elements have same ids (6.89 MB)
5 Q How to specify Multiple Classes for single element What is the style precede (9.78 MB)
6 Q What are Data Attributes in HTML (11.86 MB)
1 5 HTML Links & Navigation - Introduction (15.98 MB)
2 Q What are the 5 Types of Links in HTML (16.08 MB)
3 Q What is the difference between Absolute and Relative URLs (29.59 MB)
4 Q What is the purpose of the nav element in HTML (11.31 MB)
5 Q What is a Fragment Identifier in a URL (7.19 MB)
6 Q What is the purpose of the base element in HTML (6.96 MB)
7 Q How do you add an external stylesheet in your HTML (3.41 MB)
8 Q How do you open a link in a new tab (5.88 MB)
9 Q How do you create an Email Link (4.82 MB)
1 Variables & Datatypes - Introduction (13.59 MB)
2 Q21 What are variables What is the difference between var, let, and const (21.74 MB)
3 Q22 What are data types in JS (7.57 MB)
4 Q23 What is the difference between primitive and non-primitive data types (25.52 MB)
5 Q24 What is the difference between null and undefined in JS (15.84 MB)
6 Q25 What is the use of typeof operator (9.64 MB)
7 Q26 What is type coercion in JS (9.83 MB)
1 6 HTML Lists & Tables - Introduction (11.55 MB)
2 Q What are the different Types of Lists in HTML (16.99 MB)
3 Q What is a Nested List in HTML (4.66 MB)
4 Q What are table, tr, th, td elements What are table advantages & disadvantage (17.91 MB)
5 Q What is the colspan attribute in HTML (8.28 MB)
6 Q What is the best way to add a border to a table, column and cell (7.1 MB)
1 7 HTML Images & Multimedia - Introduction (13.84 MB)
2 Q How to embed an Image in HTML Why alt attribute is so important (14.76 MB)
3 Q What are the difference between JPEG and PNG image formats (8.1 MB)
4 Q How to embed Video element in HTML Why we need multiple source elements (15.58 MB)
5 Q How to embed Audio element in HTML (4.76 MB)
6 Q What are the Autoplay & Loop attributes in multimedia elements (7.62 MB)
1 8 HTML Forms - Introduction (12.93 MB)
2 Q What are HTML Forms and what are its advantages (12.69 MB)
3 Q What are HTML Form Elements and their Main Attributes (22.28 MB)
4 Q How to Validate for empty input field in form (5.26 MB)
5 Q What is the role of the textarea element in a form (9.82 MB)
6 Q What are the Types of Input elements in a form (13.59 MB)
7 Q How to create radio buttons and checkboxes How to group them (18.94 MB)
8 Q What is the purpose of the select element in a form (9.42 MB)
1 9 Best Practices, Boilerplate & Deployment - Introduction (7.69 MB)
2 Q What are top 10 Best Practices for writing HTML code (31.44 MB)
3 Q What is HTML5 Boilerplate code (4.68 MB)
4 Q How do you optimize an HTML website for Performance (16.33 MB)
5 Q What is SEO What are 5 HTML Best Practices for SEO (25.65 MB)
6 Q What are the 5 steps required for HTML website deployment (7.99 MB)
1 10 HTML Responsiveness, Frameworks & Others - Introduction (8.33 MB)
2 Q What is Responsive Design (5.68 MB)
3 Q What are the top 3 things required to make a website Responsive in HTML (12.9 MB)
4 Q What are some Responsive Design Frameworks for HTML & CSS (3.95 MB)
5 Q What are HTML Entities How do you display special characters in HTML (7.05 MB)
6 Q What are the Top 5 Emerging Trends in HTML development (14.57 MB)
1 1 CSS Basics & Implementation - Introduction (12.32 MB)
10 Q What are the 3 Types of CSS Preprocessors (5.06 MB)
2 Q What is CSS What are the 5 ways to Implement CSS in HTML (11.39 MB)
3 Q What is Inline Style in CSS When to use it in real applications (7.43 MB)
4 Q What is Internal Stylesheet in CSS When to use it in real applications (12.89 MB)
5 Q What is External Stylesheet in CSS When to use it in real applications (14.23 MB)
6 Q What are the 5 advantages of external stylesheet (11.67 MB)
7 Q How do you Include CSS in a webpage or HTML (3.51 MB)
8 Q How to implement CSS using @import rule (17.09 MB)
9 Q What is CSS Preprocessors What is SCSS (28.6 MB)
1 2 Selectors in CSS - Introduction (9.8 MB)
2 Q What are Selectors in CSS How many types of selectors are there (6.48 MB)
3 Q Difference between ID, Element & Class selector When to use which selector (25.6 MB)
4 Q What are Universal selectors (4.11 MB)
5 Q What are the Descendant Selectors in CSS (12.75 MB)
6 Q What are Attribute Selectors in CSS What are it's 5 Types (24.44 MB)
7 Q What are Child Selectors in CSS (7.46 MB)
8 Q How Child Selector is different from Descendent selectors (1.42 MB)
9 Q What are Pseudo-class Selector and Pseudo-element Selector (11.17 MB)
1 3 Layout and Positioning - Introduction (10.27 MB)
2 Q Explain the concept of the Box Model in CSS (9.88 MB)
3 Q What is the difference between Padding and Margin (9.89 MB)
4 Q What is the difference between display inline & display block (10.72 MB)
5 Q What is the difference between display inline and display inlineblock (11.69 MB)
6 Q What is z-index property in CSS How same z-index elements will be displayed (15.84 MB)
7 Q What is the role of float property in CSS (17.57 MB)
8 Q What is the difference between position relative absolute fixed (26.06 MB)
1 4 Responsive Design, Flexbox & Grid Layout - Introduction (9.82 MB)
2 Q What is the role of meta viewport tag (19.02 MB)
3 Q What are Media Queries in CSS (7.44 MB)
4 Q What is display flex in CSS (17.67 MB)
5 Q What is CSS Grid Layout in CSS (6.57 MB)
6 Q How can you create a Sticky Header in CSS (2.98 MB)
7 Q What are the 5 best practices for creating a Responsive Design using CSS (12.8 MB)
1 1 Bootstrap - Introduction (13.91 MB)
10 Q What is Bootstrap Carousel component (7.45 MB)
11 Q Explain the difference between Bootstrap's container and container-fluid (8.23 MB)
12 End (11.19 MB)
2 Q What is Bootstrap What are the other 5 responsive design frameworks (8.21 MB)
3 Q What are the 5 Advantages of using Bootstrap (8.59 MB)
4 Q What are the 2 ways to include Bootstrap framework for your website (13.99 MB)
5 Q Explain the Grid System in Bootstrap (12.32 MB)
6 Q What is the difference between col-xs, col-sm, col-md, col-lg & col-xl (12.87 MB)
7 Q What are Bootstrap Components What are Top 10 bootstrap components (18.88 MB)
8 Q What is a Bootstrap Modal component (10.61 MB)
9 Q What is a Bootstrap Navigation component (5.76 MB)
1 Operators & Conditions - Introduction (10.39 MB)
2 Q27 What are operators What are the types of operators in JS (32.41 MB)
3 Q28 What is the difference between unary, binary, and ternary operators (10.36 MB)
4 Q29 What is short-circuit evaluation in JS (14.36 MB)
5 Q30 What is operator precedence (4.58 MB)
6 Q31 What are the types of conditions statements in JS (21.42 MB)
7 Q32 When to use which type of conditions statements in real applications (30.7 MB)
8 Q33 What is the difference between == and === (8.85 MB)
9 Q34 What is the difference between Spread and Rest operator in JS (23.02 MB)
1 Arrays - Introduction (13.79 MB)
10 Q43 What is the difference map() and for Each() array methods of an Array (19.68 MB)
11 Q44 How to sort and reverse an array (3.85 MB)
12 Q45 What is Array Destructuring in JS (9.24 MB)
13 Q46 What are array-like objects In JS (22.27 MB)
14 Q47 How to convert an array-like object into an array (11.34 MB)
2 Q35 What are Arrays in JS How to get, add & remove elements from arrays (20.1 MB)
3 Q36 What is the indexOf() method of an Array (3.14 MB)
4 Q37 What is the difference between find() and filter() methods of an Array (21.86 MB)
5 Q38 What is the slice() method of an Array (7.03 MB)
6 Q39 What is the difference between push() and concat () methods of an Array (9.82 MB)
7 Q40 What is the difference between pop() and shift() methods of an Array (9.64 MB)
8 Q41 What is the splice() method of an Array (24.38 MB)
9 Q42 Difference between the slice() and splice() methods of an Array (2.34 MB)
1 Loops - Introduction (11.29 MB)
2 Q48 What is a loop What are the types of loops in JS (8.9 MB)
3 Q49 What is the difference between while and for loops (13.08 MB)
4 Q50 What is the difference between while and do-while loops (9.29 MB)
5 Q51 What is the difference between break and continue statement (7.98 MB)
6 Q52 What is the difference between for and for.of loop in JS (9.1 MB)
7 Q53 What is the difference between for.of and for.in loop (8.75 MB)
8 Q54 What is forEach method Compare it with for.of and for.in loop (17.72 MB)
9 Q55 When to use for.of loop and when to use forEach method in applications (9.83 MB)
1 Functions - Introduction (10.93 MB)
10 Q64 How do you use default parameters in a function (4.32 MB)
11 Q65 What is the use of event handling in JS (18.99 MB)
12 Q66 What are First-Class functions in JS (9.26 MB)
13 Q67 What are Pure and Impure functions in JS (21.17 MB)
14 Q68 What is Function Currying in JS (19.34 MB)
15 Q69 What are call, apply and bind methods in JS (19.59 MB)
2 Q56 What are Functions in JS What are the types of function (6.47 MB)
3 Q57 Difference between named and anonymous functions (10.69 MB)
4 Q58 What is function expression in JS (5.85 MB)
5 Q59 What are Arrow Functions in JS What is it use (11.2 MB)
6 Q60 What are Callback Functions What is it use (15.13 MB)
7 Q61 What is Higher-order function In JS (15.68 MB)
8 Q62 What is the difference between arguments and parameters (2.85 MB)
9 Q63 In how many ways can you pass arguments to a function (12.87 MB)
1 Strings - Introduction (8.48 MB)
2 Q70 What is a String (891.35 KB)
3 Q71 What are template literals and string interpolation in strings (8.9 MB)
4 Q72 Difference between single quotes (''), double quotes () & backticks('') (3.26 MB)
5 Q73 What are some important string operations in JS (20.37 MB)
6 Q74 What is string immutability (9.1 MB)
7 Q75 In how many ways you can concatenate strings (8.67 MB)
1 DOM - Introduction (9.3 MB)
10 Q84 How to add and remove style from HTML elements in DOM using JS (7.28 MB)
11 Q85 Create new elements in DOM using JS (20.85 MB)
12 Q86 What is the difference between createElement() and createTextNode() (9.69 MB)
2 Q76 What is DOM What is the difference between HTML and DOM (18.15 MB)
3 Q77 How do you select, modify, create and remove DOM elements (9.14 MB)
4 Q78 What are selectors in JS (5.44 MB)
5 Q79 Difference between getElementById,getElementsByClassName& getElementsByTag (26.35 MB)
6 Q80 What is the difference between querySelector() and querySelectorAll() (8.83 MB)
7 Q81 What are the methods to modify elements properties and attributes (3.98 MB)
8 Q82 What is the difference between innerHTML and textContent (12.86 MB)
9 Q83 How to add and remove properties of HTML elements in the DOM using JS (7.97 MB)