Fundamentals of Functional JavaScript

Learn function declaration and invocation by building a greet function with parameters, string interpolation, and console log. Use return values to enable flexible greetings and follow the dry principle.

Learn to write arrow functions by assigning them to a variable in a new Function-anatomy2.js file. Discover concise syntax, implicit returns for single expressions, and when braces are needed.

Learn how JavaScript treats functions as first-class values by assigning them to variables, creating references like greetReference, and distinguish named vs anonymous functions and their syntax rules.

Learn how to define and pass multiple parameters in JavaScript, create range function with start and end parameters, handle optional parameters with if statements, and convert to an arrow function.

Explore immediately invoked function expressions and anonymous functions. Learn how to pass parameters, keep scope private, and avoid polluting the global object, with optional arrow function IIFEs.

Explore optional and default parameters in JavaScript, demonstrate the rest operator for variable arguments, and calculate a class average using arrays, loops, and array.isArray validation.

Explore functional JavaScript by implementing askRide, a function with a default pickup location and rest parameters for stops, printing the ride and ending with 'see you in the next one'.

Explore the basics of functional programming in JavaScript by learning how first-class functions treat functions as variables, enabling assignment, passing as arguments, and returning values.

Explore higher-order functions and first-class functions by passing function references as arguments to a run function, executing add, subtract, multiply, and divide, including anonymous and arrow functions.

Explore higher-order functions by building a city tax calculator using currying to return a final-price function for New York, Denver, and Chicago.

Master the map method in JavaScript by creating a times two array from numbers with a callback using current value, index, and array, including a concise one-line arrow function solution.

Use the map method to extract names and grades from an array of literal objects. Chain maps to add and rename properties such as approved and first period grades.

Learn how the array filter method works in JavaScript by applying predicates to select approved students and names starting with s, including using named and anonymous callback functions.

Explore the reduce method in JavaScript, compare it with map, and build a sum and an object with even and odd arrays using an initial value.

Use reduce to build a dash-prefixed groceries list from a fruits array, with an initial empty string and an index-based line break, then sum prices from objects.

Practice exercise using map, reduce, and filter to compute each student's GPA from grades, set approved flags, and display only approved students.