JavaScript Bootcamp 2026: Build a Calculator + Projects

Set up your machine for JavaScript development and prepare your base code before diving into programming in the next module.

Explore how variables act as markings or containers that hold data, using labeled boxes to access notebooks. Understand how scope frames where you can find variable examples in code.

Discover how to declare variables in JavaScript with let and const, avoid undeclared variables and assignment to a constant variable, and name identifiers clearly.

Explore JavaScript operators, including logical, assignment, and arithmetic operators, and learn how to add and subtract in code.

Master arithmetic operators in JavaScript, including plus, minus, multiply, divide, exponentiation, and modulo to perform calculations and understand remainders.

Explore JavaScript assignment operators: plus equals, minus equals, divide equals, multiply equals, exponent equals, modulo equals; learn that a += 5 is shorthand for a = a + 5.

Explore bitwise operators by converting decimal numbers to bit representations and using or and and to compute results; apply these to a file permission checker with read, write, and delete levels.

Explore how control flows through a program, revealing how code executes and transfers between blocks, and what causes the flow to jump between lines.

Master how if-else statements control program flow by evaluating the weekday to decide actions like buying groceries on Sunday or going to the office, including if-else ladders and switches.

Describe how a for loop uses initialization, condition, and modification, with optional statements and semicolon separators, and show how it iterates from zero to nine and breaks at ten.

Explore how while and do while loops repeat code blocks in JavaScript, evaluate conditions to control execution, and avoid infinite loops by updating the conditional variable.

Learn how JavaScript objects act as a non-primitive datatype to store multiple key-value pairs, using the student object to demonstrate dot notation, bracket notation, and adding properties like nickname.

Explore accessing nested object properties using dot and bracket notation, and examine how student objects contain arrays, numbers, strings, and a marks object to illustrate deep nesting.

Create a person object with first and last name properties and add a full name method that returns the concatenated name, accessed via dot notation and invoked with parentheses.

Explore arrays as a vital data structure in this module introduction, learn to manipulate arrays, access values, insert, add, delete, and apply various array methods.

Learn how to access array elements using zero-based indices, reading weekdays like Sunday, Monday, and Tuesday, and retrieve values by index such as weekdays[0] and weekdays[1].

Learn how to add elements to an existing array with push and on shift, including appending another array, and understand how length and undefined slots reflect unfilled indices.

Use the forEach method to iterate through an array and apply a function to every element. See how doubling elements and accumulating a running sum yields final total of 34.

Sort arrays in JavaScript with the sort function, enabling ascending or descending order via reverse. Use a comparator for numbers or objects and note that sort mutates the original array.

Explore how to declare and invoke JavaScript functions with descriptive names, assign discrete responsibilities (draw shape, color), and reuse code to avoid redundancy, including passing arguments to simple demonstrations.

Learn how functions accept parameters to handle dynamic data, call with different arguments, print names, and compute sums, enabling reusable code across files and modules.

Understand that function parameters are declared and arguments are passed when calling a function. JavaScript does not enforce types or argument counts, and default values handle missing inputs.

Explore how scope governs variable and function accessibility, distinguishing global from local scope and how parameters create local variables that do not affect global ones.

Learn how to define functions as expressions in JavaScript by storing a function in a variable, calling it with arguments, and distinguishing the function from its invocation.

Understand hoisting in JavaScript, which lets functions and variables be used before declaration, with let flagging pre-declaration issues and var avoiding the initialization problem.

Learn how arrow functions provide a cleaner way to define JavaScript functions, replacing the function keyword with concise syntax, including single-expression bodies that return implicitly and flexible parameter handling.