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ES6 and Beyond

Details

A series of lessons to help you get more familiar with modern JavaScript syntax.

Copy an Array with the Spread Operator
Nested Destructuring for Objects
Copy an Object with the Spread Operator
Merge Arrays using the Spread Operator
Flatten a Nested Array in JavaScript with Array.prototype.flat
Merge Objects with JavaScript's Spread Operator
For...in Loop vs. For...of Loop
Array.prototype.flatMap from ES2019
Convert an Object to an Array and back again with Object.entries and Object.fromEntries
Safely Access a Property on a JavaScript Object with Optional Chaining
Safely Access a Property on a JavaScript Array with Optional Chaining