A Beginners Guide to Advanced JavaScript & ES6 - ES2017

Explore strict versus loose equality in JavaScript, demonstrating how === checks type and value while == performs type coercion, with examples using numbers, strings, and booleans.

Explore JavaScript operators, including assignment, arithmetic, remainder, and comparison operators, plus prefix and postfix increment and decrement, and shorthand forms such as x += y.

Explore operator precedence and associativity in JavaScript, showing multiplication before addition, left-to-right evaluation for equal operators, and right-to-left assignment with practical console examples.

Explore how in the browser the global object is the window object. In global scope, every variable attaches to window, and this inside a function defaults to the window object.

Learn how the keyword this behaves inside a declared object, binding to the closest parent object and enabling methods to access this.first and this.last.

Explore how the new keyword creates a new object, binds this, links __proto__ to the constructor's prototype, and returns this, as shown with a student constructor using name and age.

Explore closures in JavaScript by showing how a function and its lexical environment, including nested and inner functions, retain access to the outer scope after it closes.

explains the spread operator with three dots and how it expands array elements to create a single, merged array, illustrating copy versus nesting.

Explore destructuring and array matching in ES2015 to assign array values to variables in one step, and omit unused variables with commas to extract only the needed values.

Explore how the array includes method checks for elements and returns true or false. Learn how the optional second parameter starts the search from a given index, including negative indices.

Master the exponentiation operator in JavaScript (new in ES6), calculate 8 squared and 5 cubed, and apply syntax rules with parentheses and unary restrictions on the left side.

Explore how to use Object.keys, Object.values, and Object.entries to iterate over a JavaScript object in es2017, using a city population example to return keys, values, and key-value pairs as arrays.

Learn how async/await simplifies promises in JavaScript, using await to pause execution and return a promise, with a hands-on example contrasting chained promises and cleaner async code.