#javascript

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Learn JS Series (#20) - Default, Rest, and Spread: Flexible Function Signatures What will I learn You will learn default parameters in depth, including defaults computed from earlier parameters; the rest

Learn JS Series (#18) - Higher-Order Functions: Functions That Take or Return Functions What will I learn You will learn the precise definition of a higher-order function, and why the idea matters far

Learn JS Series (#17) - Closures: The Single Most Important Idea in JavaScript What will I learn You will learn precisely what a closure is: a function bundled with the variables of its birthplace; how

Learn JS Series (#16) - Arrow Functions vs function: Syntax, this, and When Each Wins What will I learn You will learn the full arrow-function syntax, from the verbose form all the way down to the one-liner;

Learn JS Series (#15) - First-Class Functions: Passing, Returning, and Storing Functions What will I learn You will learn what "first-class functions" actually means, and why it is the key idea

Learn JS Series (#14) - Mini Project: A Command-Line Tip Calculator What will I learn You will build a complete, real command-line program from scratch, tying together all of Phase 1; how to read the arguments

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Learn JS Series (#13) - Truthiness, Equality, and Coercion: == vs === Done Properly What will I learn You will learn the exact list of falsy values and why everything else is truthy; how JavaScript coerces

Learn JS Series (#12) - Objects: Key-Value Data, Dot vs Bracket Access, and Nesting What will I learn You will learn how to model real-world things as objects with named properties; the difference between

Learn JS Series (#11) - Arrays: The Workhorse Data Structure and Its Core Methods What will I learn You will learn how to create arrays and access their elements, including the modern .at(); why arrays

Learn JS Series (#10) - Scope and the Temporal Dead Zone: How JavaScript Finds Your Variables What will I learn You will learn what scope is, and the three kinds JavaScript has: global, function, and block;

Learn JS Series (#9) - Functions: Declarations, Parameters, Return Values, and Hoisting What will I learn You will learn the three ways to create a function, and how they differ; how parameters, arguments,

Learn JS Series (#8) - Loops: for, while, for...of, for...in, and When to Use Which What will I learn You will learn the classic C-style for loop and exactly what each of its three parts does; when a while

Learn JS Series (#7) - Control Flow: if/else, switch, and the Ternary Expression What will I learn You will learn how JavaScript decides what code to run, with if, else if, and else; what "truthy"

Learn JS Series (#6) - Numbers: IEEE 754, Why 0.1 + 0.2 Is Not 0.3, and How to Cope What will I learn You will learn how JavaScript stores every number as a single 64-bit floating point value, and what

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Learn JS Series (#5) - Strings: Template Literals, Unicode, and the Methods You Actually Use What will I learn You will learn template literals in depth, including multi-line strings and expression

Learn JS Series (#4) - Operators and Expressions: Arithmetic, Comparison, Logical, and Short-Circuiting What will I learn You will learn JavaScript's arithmetic operators, including the ones that surprise

Learn JS Series (#3) - The Primitive Types: number, string, boolean, null, undefined, symbol, bigint What will I learn You will learn the seven primitive types that every JavaScript value is built from;