Create MCQA for the topic: DOM Object and Window Object

[kirandash]

Please create an MCQA to be added as question number 43.

The multiple choice question should be on the topic "DOM Object and Window Object ". The difficulty level should be "Easy/Medium"

Tasks:

• add your code to 043 folder under code
• add your question to 43 in README.md file
• create a video explanation and upload on YouTube (optional)

Explanation:

• window: global object
  • usage: window.document or document since window is global object we don't need to use window.
  • Ex: setInterval is method of window object and can be accessed as window.setInterval() or setInterval()
  • other window props: window.location, window.href
• BOM: Browser obj Model: screen, locator, navigator, frames, history, XMLHttpRequest
• Document: is an obj of window.
• DOM: html, head, body etc

Qns that are asked in interviews:

• What is the difference between window and document ?
• What is DOM [Document Object Model] or DOM API ?
• What is BOM [Browser Object Model] ?
• Explain the difference between DOM and BOM ?
• Which is the global object in browser ?
• How will we check the innerWidth and innerHeight of window ?
  • ans: window.innerWidth or window.innerHeight
• How will you get hostname or value typed in address bar ?
  • ans: window.location