web dev part 2 course 1

Question 1

no script tag

Answer 1

used when browser doesnt support script tag

Question 2

self executing function

Answer 2

(function(){})()

Question 3

which standard is dom

Answer 3

W3C (World Wide Web Consortium) standard.

Question 4

what is dom

Answer 4

“The W3C Document Object Model (DOM) is a platform and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure, and style of a document.”

The W3C DOM standard is separated into 3 different parts:

Core DOM - standard model for all document types
XML DOM - standard model for XML documents
HTML DOM - standard model for HTML documents

The document object model is the programming interface between HTML or XHTML and JavaScript. The Document Object Model (DOM) is a browser-based interface for applications and scripts to dynamically access and update the content, structure, and style of documents

Question 5

how many dom levels are there

Answer 5

5-> 0 to 4

Question 6

Dom model browser include

Answer 6

window,screen,document(html..),navigator,location,history

Question 7

how to add script-generated HTML to the document.

Answer 7

document.write() function

Question 8

convert num to string

Answer 8

var a=10;
console.log(a.toString())
S in caps

Question 9

var total = 10 + 1 +” 3”;

Answer 9

113

Question 10

var a = new String(“Hello”);

var b = “Hello”; 
same or not ?

Answer 10

no a is object b is string

Question 11

on change and on save are eventbinders?

Answer 11

onsave is not

Question 12

git and github difference

Answer 12

Git is a version control system that lets you manage and keep track of your source code history. GitHub is a cloud-based hosting service that lets you manage Git repositories.

Question 13

SSH protocol full form

Answer 13

Secure Shell Protocol

Question 14

what is SSH?

Answer 14

The SSH protocol is a method for secure remote login from one computer to another.

Question 15

what is a fork

Answer 15

A fork is a copy of a repository

Question 16

what is pull request

Answer 16

A pull request is the way you request that someone reviews and approves your changes before they become final

Question 17

git init

Answer 17

When starting out with a new repository, you only need to create it once: either locally, and then push to GitHub, or by cloning an existing repository by using the command “git init”.

Question 18

git add

Answer 18

“git add” moves changes from the working directory to the staging area.

Question 19

working directory

Answer 19

A working directory contains the files and subdirectories on your computer that are associated with a Git repository

Question 20

git status

Answer 20

“git status” allows you to see the state of your working directory and the staged snapshot of your changes

Question 21

git commit

Answer 21

“git commit” takes your staged snapshot of changes and commits them to the project

Question 22

git reset

Answer 22

“git reset” undoes changes that you’ve made to the files in your working directory.

Question 23

git log

Answer 23

“git log” enables you to browse previous changes to a project

Question 24

git branch

Answer 24

“git branch” lets you create an isolated environment within your repository to make changes

Question 25

git checkout

Answer 25

git checkout” lets you see and change existing branches

Question 26

git put

Answer 26

“git merge” lets you put everything back together again