What are the traversal methods of arrays in js

There are many ways to traverse arrays in JavaScript: for loop forEach() method map() method filter() method find() method findIndex() method every() method some() method reduce() method

Traversal methods of arrays in JS

In JavaScript, there are the following methods for traversing arrays:

1. for loop

const arr = [1, 2, 3, 4, 5];

for (let i = 0; i < arr.length; i++) {
  console.log(arr[i]);
}

2. forEach() method

const arr = [1, 2, 3, 4, 5];

arr.forEach((element) => {
  console.log(element);
});

3. map() method

const arr = [1, 2, 3, 4, 5];

const newArr = arr.map((element) => element * 2);

console.log(newArr); // [2, 4, 6, 8, 10]

4. filter() method

const arr = [1, 2, 3, 4, 5];

const newArr = arr.filter((element) => element > 2);

console.log(newArr); // [3, 4, 5]

5. find() method

const arr = [1, 2, 3, 4, 5];

const element = arr.find((element) => element === 3);

console.log(element); // 3

6 . findIndex() method

const arr = [1, 2, 3, 4, 5];

const index = arr.findIndex((element) => element === 3);

console.log(index); // 2

7. every() method

const arr = [1, 2, 3, 4, 5];

const result = arr.every((element) => element > 0);

console.log(result); // true

8. some() method

const arr = [1, 2, 3, 4, 5];

const result = arr.some((element) => element > 3);

console.log(result); // true

9. reduce() method

const arr = [1, 2, 3, 4, 5];

const sum = arr.reduce((acc, element) => acc + element);

console.log(sum); // 15

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