for of vs for in javascript
let list = [4, 5, 6];
for (let i in list) {
console.log(i); // "0", "1", "2",
}
for (let i of list) {
console.log(i); // "4", "5", "6"
}
// EXAMPLE 2
let pets = new Set(["Cat", "Dog", "Hamster"]);
pets["species"] = "mammals";
for (let pet in pets) {
console.log(pet); // "species"
}
for (let pet of pets) {
console.log(pet); // "Cat", "Dog", "Hamster"
}javascript for of
const array = ['hello', 'world', 'of', 'Corona'];
for (const item of array) {
console.log(item);
}for of loop syntax javascript
for (let step = 0; step < 5; step++) {
// Runs 5 times, with values of step 0 through 4.
console.log('Walking east one step');
}for of loop javascript
const array1 = ['a', 'b', 'c'];
for (const element of array1) {
console.log(element);
}
// expected output: "a"
// expected output: "b"
// expected output: "c"how to use for of in javascript
const array1 = ['a', 'b', 'c'];
for (const element of array1) {
console.log(element);
}for of and for in javascript
let arr = ['el1', 'el2', 'el3'];
arr.addedProp = 'arrProp';
// elKey are the property keys
for (let elKey in arr) {
console.log(elKey);
}
// elValue are the property values
for (let elValue of arr) {
console.log(elValue)
}Copyright © 2021 Codeinu
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