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

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

2. forEach() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

3. map() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

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

4. filter() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

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

5. find() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

console.log(element); // 3</code>

6 . findIndex() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

console.log(index); // 2</code>

7. every() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

console.log(result); // true</code>

8. some() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

console.log(result); // true</code>

9. reduce() method

<code class="javascript">const arr = [1, 2, 3, 4, 5];

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

console.log(sum); // 15</code>

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