JavaScript REST PARAMETERS in 8 minutes! 🗄

// rest parameters = (...rest) allow a function work with a variable // number of arguments by bundling them into an array // spread = expands an array into separate elements // rest = bundles separate elements into an array 00:00:00 example 1 00:03:52 example 2 00:06:07 example 3 // ------- EXAMPLE 1 ------- function openFridge(...foods){ console.log(...foods); } function getFood(...foods){ return foods; } const food1 = "pizza"; const food2 = "hamburger"; const food3 = "hotdog"; const food4 = "sushi"; const food5 = "ramen"; openFridge(food1, food2, food3, food4, food5); const foods = getFood(food1, food2, food3, food4, food5); // ------- EXAMPLE 2 ------- function sum(...numbers){ let result = 0; for(let number of numbers){ result += number; } return result; } function getAverage(...numbers){ let result = 0; for(let number of numbers){ result += number; } return result / numbers.length; } const average = getAverage(75, 100, 85, 90, 50); console.log(average); // ------- EXAMPLE 3 ------- function combineStrings(...strings){ return strings.join(" "); } const fullName = combineStrings("Mr.", "Spongebob", "Squarepants", "III"); console.log(fullName);