Master JavaScript with Node.js

Explore variables in JavaScript by declaring with let or var, understanding number, string, boolean, bigint, and symbol types, and observing dynamic typing and type changes.

Create a new folder inside your project, add first program.js, print Hello world with console, and run it using node to see the output.

Explore JavaScript arithmetic operators, including addition, subtraction, multiplication, division, modulus, and exponentiation, along with increment and decrement and their assignment forms.

Learn how to use logical and comparison operators in JavaScript, including and, or, not, and equality and relational operators, with practical examples on booleans and numeric comparisons.

Master the use of if, else, and nested if conditional statements in JavaScript to execute code based on true or false conditions, with practical examples like comparing numbers.

Master switch case in JavaScript by using a key variable to branch into addition, subtraction, multiplication, or division with a default case and break.

Explore the classic for loop, including index, condition, and increment, with examples that print 0–10 and select odd numbers using the modulus operator.

Explore the while loop, a conditional construct that runs while a condition remains true. It starts at 100, decrements by 10, and contrasts with do while and for loops.

Explore nested loops, where an outer for loop contains an inner for loop to yield multiple iterations, useful for two dimensional arrays, tables, and pattern generation.

Learn how JavaScript evaluates truthy and falsy values in if blocks, using numbers, strings, null, and undefined to decide between the if and else blocks.

Explore string basics, including what a string is and how to compare strings with strict equality. Convert to upper or lower, trim edges, and concatenate with plus or concat.

Understand how length counts the number of characters in a string, including spaces and special characters, and how index assigns a zero-based position to each character.

Explore how to find a substring’s position in a string with index of and last index of, handle not found results, and locate first, last, and intermediate occurrences.

Learn how to validate string beginnings and endings using starts with and ends with in Node.js, and contrast with the includes method for substring checks.

Learn to extract string segments with the slice method, using begin and end indices, including negative indexing for from-end calculations, where the end index is not inclusive.

Learn to extract characters from a string using index and charAt, treat strings as arrays, loop through characters, and reverse a string by concatenating into a temp string.

Discover how to locate a substring with JavaScript's search method, compare it to indexOf, and use regular expressions to return the position of the match.

Explore how the match method extracts all prices from a string using a regex that starts with a dollar, includes digits, and an optional decimal part, with the global flag.

Discover the basics of JavaScript functions, including declaring with the function keyword, passing arguments, calling with parentheses, and using them to add numbers and print results.

Discover how a JavaScript function returns a value using the return keyword, assign the result to a variable outside the function, and use it for further processing.

Learn to set default values for function arguments in JavaScript, using the equal sign to provide fallbacks, handle undefined, and override defaults when callers supply values.

Master JavaScript explores the arguments object in functions, allowing multiple inputs to be processed and summed, using index access, with for loops, while noting arrow functions lack this object.

Explore JavaScript function redeclaration, where the latest declaration overrides earlier ones, and function expressions become anonymous. Distinguish this from method overloading and note the role of var, let, and const.

Master JavaScript function basics by reviewing how to create functions, return values, work with flexible parameters and defaults, and understand function expressions in JS.

Learn how to manipulate arrays in JavaScript by adding and removing elements at the end or the beginning using push, pop, unshift, and shift.

Discover how to use the for each loop to execute an inline function for every array element, gaining access to item, index, and the full array in JavaScript.

Conclude JavaScript arrays by reviewing creation, access, and length, plus common operations like push, pop, shift, and unshift. Learn search methods and loops using for of and for each.

Create a constructor function in JavaScript by using this to assign properties to the object, call it with the new keyword, and follow uppercase naming convention to indicate a constructor.

Learn how the new keyword creates objects with constructor functions or instances, with flexible arguments; you can omit initial values, then update properties like device name and OS later.

Learn how to call a function using the call property to set the proper this reference and pass arguments, demonstrated with account and account manager examples.

Explore creating objects with functions and JavaScript function constructors, adjust constructor arguments, observe undefined properties, and understand this behavior when calling constructors with and without new using the call method.

Explains how a constructor function creates a prototype object that serves as the prototype for both the constructor and all objects created with it.

Explore prototypes in JavaScript, including how prototypes work for objects and functions, the null prototype object, the prototype chain, and how constructors share a prototype across objects via prototypal inheritance.

Explore how to create classes in JavaScript using ES6, compare class syntax with constructor functions, and instantiate objects with the new keyword to leverage templates and simple inheritance.

Create a class with a constructor for make and model, and add start and stop methods to demonstrate class-based behavior in Node.

Explore how inheritance works in JavaScript—from prototypes to class-based inheritance—by extending an employee class with a manager, sharing name, ID, email, and methods.

Learn how a child class uses the super constructor to initialize inherited employee properties before adding manager-specific fields such as manager id.