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Commit 5303274

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Merge pull request #4 from Vasu7389/feature/new_question
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‎README.md

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@@ -4,7 +4,7 @@ description: "Prepare for your next 2024 JavaScript interview with these tricky
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githubPath: "https://github.com/Vasu7389/JavaScript-Interview-Questions"
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<span style=" font-size: 1rem; border-bottom: 1px solid grey;"> Updated Jan 07, 2024 </span>
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<span style=" font-size: 1rem; border-bottom: 1px solid grey;"> Updated Mar 31, 2024 </span>
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In this article, we will cover a range of JavaScript interview questions, including those related to the latest versions of the language (ES6, ES7, ES8, and ES9).
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4. **Output:** The final `console.log()` statement outputs the result of the `reduce()` operation, which is 30 (the sum of all the doubled numbers in the array).
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</details>
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<details>
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<summary>
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<h3>47. Write a JavaScript function that takes an array of numbers as input and returns a new array containing only the even numbers.</h3>
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_*You can't use built-in methods like filter or forEach._
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</summary>
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**Answer:**
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Approach 1: Using a loop and conditional statement
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```js
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function findEvenNumbers(numberArray) {
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const evenNumbers = [];
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for (let i = 0; i < numberArray.length; i++) {
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if (numberArray[i] % 2 === 0) {
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evenNumbers.push(numberArray[i]);
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}
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}
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return evenNumbers;
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}
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```
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Approach 2: Using recursion and conditional statement
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```js
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function findEvenNumbersRecursive(numberArray) {
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if (numberArray.length === 0) {
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return [];
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}
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const firstNumber = numberArray[0];
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const remainingNumbers = numberArray.slice(1);
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if (firstNumber % 2 === 0) {
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return [firstNumber].concat(findEvenNumbersRecursive(remainingNumbers));
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} else {
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return findEvenNumbersRecursive(remainingNumbers);
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}
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}
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```
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</details>

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