Assistant Software Developer Interview Questions and Answers

Styles can be added to HTML elements using JavaScript by manipulating the element's style property.

• Access the element using document.getElementById() or document.querySelector()

• Use the style property to set CSS styles, e.g. element.style.color = 'red'

• Styles can also be set using CSS classes, e.g. element.classList.add('my-class')

Promises are a way to handle asynchronous operations in JavaScript.

• Promises represent a value that may not be available yet.

• They have three states: pending, fulfilled, or rejected.

• Promises can be chained together using .then() and .catch() methods.

• They help avoid callback hell and make code more readable.

• Example: new Promise((resolve, reject) => {...}).then(result => {...}).catch(error => {...})

Artisan is a command-line interface in Laravel PHP framework for performing repetitive tasks.

• Artisan provides a set of helpful commands for developers to speed up their development process.

• It can be used to generate boilerplate code, run database migrations, and perform other tasks.

• Developers can also create their own custom commands using Artisan.

• Example commands include 'php artisan make:model', 'php artisan migrate', and 'php artisan serve'.

A binary tree is a data structure where each node has at most two children. Diameter of a binary tree is the longest path between any two nodes.

• Binary tree is a tree data structure where each node has at most two children.

• Diameter of a binary tree is the longest path between any two nodes.

• In a binary search tree (BST), the diameter is the number of nodes on the longest path between two leaves.