BOMAG Interview Questions and Answers

ES6 features like object destructuring, arrow functions, array methods

• Object destructuring allows for easy extraction of values from objects

• Arrow functions provide a concise syntax for writing functions

• Array.filter() allows for filtering of elements based on a condition

• Array.reduce() allows for reducing an array to a single value

• Array.indexOf() returns the index of the first occurrence of a specified element

Use CSS to set margin to auto for horizontal centering and text-align center for vertical centering.

• Set the parent div's display property to flex and justify-content to center

• Set the child div's margin property to auto

• Alternatively, set the parent div's text-align property to center and child div's display property to inline-block

Data can be transferred between components in Angular using @Input and @Output decorators.

• Use @Input decorator to pass data from parent to child component

• Use @Output decorator to emit events from child to parent component

• Use EventEmitter to emit custom events

• Use ViewChild to access child component's properties and methods

Var, let, const are used to declare variables in JavaScript. 'use strict' enables strict mode.

• Var is function-scoped and can be redeclared. Let and const are block-scoped and cannot be redeclared.

• Let allows reassignment while const does not.

• 'use strict' enables strict mode which enforces stricter rules and better error handling.

• Example: var x = 10; let y = 20; const z = 30;

• Example: 'use strict';

Pseudo classes are keywords used in CSS to select and style elements based on their state or position in the document.

• Pseudo classes start with a colon (:) followed by the keyword

• They are used to style elements based on their state, such as :hover, :active, :focus

• They can also be used to select elements based on their position in the document, such as :first-child, :last-child

• Pseudo classes can be combined with other selectors to create more specific styles

async/await in script tag is used to load external scripts asynchronously without blocking the page.

• async/await allows scripts to be loaded asynchronously without blocking the page

• It is useful for loading external scripts that may take time to load

• It improves page performance by not blocking the rendering of the page

• It is supported in modern browsers