Revature Week 3

Front 1

Does meta have a closing tag?

Back 1

No

Front 2

What is the tag also known as?

Back 2

Root tag

Front 3

What is used for?

Back 3

Images

Front 4

3 ways of including css code

Back 4

- inline (highest priority - most specific)

- External

- internal

Front 5

What is used for

Back 5

Ordered list

Front 6

What is used for

Back 6

Listing items

Front 7

What is used for

Back 7

Unordered list

Front 8

What does HTML stand for?

Back 8

Hypertext Markup Language

Front 9

What type of language is HTML?

Back 9

It is a standard markup language used fordisplaying content on the internet (via browser).

Front 10

What are nested tags used for?

Back 10

We use nested tags to represent structural elements of a webpage.

Front 11

What is the head used for? Like what?

Back 11

The head is for meta information.■ Contains Title, charset (encoding), scripts, stylesheets.

Front 12

What does the body tag contain?

Back 12

The body tag contains the content to be displayed.

Front 13

What are headings?

Back 13

Headings can range from h1 to h6, decreasing in size.

Front 14

How do we link from page to page?

Back 14

We can use anchor tags to link to another page.

Front 15

How can we allow a variable to have a global scope in JS?

Back 15

Declare outside functions or don't use var or let.

Front 16

What is shadowing in JS?

Back 16

When multiple variables have the same name but are in different scopes

Front 17

What is closure?

Back 17

An inner function that has access to the outer function's variables

Front 18

What is SYS_REFCURSOR

Back 18

a variable defined as cursor type

Front 19

What is an AFTER INSERT Trigger?

Back 19

A trigger that will execute an operation after the INSERT operation is executed.

Front 20

Syntax for creating a trigger?

Back 20

CREATE [ OR REPLACE] TRIGGER trigger_name

AFTER INSERT
ON table_name
[FOR EACH ROW]
DECLARE
--variable declarations
BEGIN
--trigger code
EXCEPTION WHEN ...

-- exception handling

END;

Front 21

How does JSON store data?

Back 21

Key-value pairs

Front 22

How does it deal with different languages when modeling data?

Back 22

Language agnostic - does not care which language is used

Front 23

How is JSON formatted?

Back 23

Like a JS object

Front 24

What does JSON.parse() do?

Back 24

Converts JSON to JS object

Front 25

How do we convert from a JS object to a JSON?

Back 25

Stringify()

Front 26

What does JSON stand for?

Back 26

JavaScript Object Notation

Front 27

What does DOM stand for?

Back 27

Document Object Model

Front 28

What does the DOM allow JS to do with the contents of a page?

Back 28

Allows updates to page

Front 29

What does the DOM do with the tree of JS objects?

Back 29

Used to render the view

Front 30

Where does DOM Parsing load the entire page?

Back 30

Into memory

Front 31

What tree does DOM parsing do?

Back 31

Tree w/ all tags

Front 32

How does SAX parsing pull the lines into memory?

Back 32

Line by line sequentially

Front 33

How can we access elements using the DOM?

Back 33

Getting elements by using getElement()By....().

Can search by ID, TagName, ClassName

Front 34

How to add elements using JSON?

Back 34

[Element].appendChild([element])

".removeChild()

".replaceChild()

Front 35

What is event propagation?

Back 35

Order in which event handlers on nested elements will be called.

Front 36

What is the general means of communication across www?

Back 36

HTTP

Front 37

How is AJAX synchronous? And what advantages are there because of it?

Back 37

Because HTTP requests don't need to wait for each other to complete. So, it is possible to periodically reload sections of a page without affecting the rest.

Front 38

What does abort() do?

Back 38

Cancels current request

Front 39

What does the readystate XHR property give us?

Back 39

The status of the XHR object.

Front 40

What are the 5 possible values for readystate? What do they mean?

Back 40

0 - request not initialized

1 - server connection established

2 - request received

3 - server processing request

4 - response is ready

Front 41

What does responseText contain?

Back 41

String containing the response context.

Front 42

Callback function

Back 42

A function passed as a parameter to another function

Front 43

JavaScript

Back 43

An object oriented computer programming language commonly used to create interactive effects within web browsers.

Front 44

How is JavaScript interpreted?

Back 44

JS is interpreted at runtime by the client browser.

Front 45

How is JavaScript dynamic?

Back 45

At runtime, JS executes programming behaviors that static programming languages perform during compilation. For example, you can create new variables at runtime and the type of variables is determined at runtime.

Front 46

How is JS OOP?

Back 46

It supports inheritance through prototyping. All JS objects inherit properties and methods from prototype. Ex. Date objects inherit from Date.prototype.

Front 47

What is HTTP?

Back 47

Protocol for fetching resources.

Front 48

What does the ready state describe? What are the possible values for loading state?

Back 48

The loading state of a document.

Loading, interactive and complete.

Front 49

What is the interactive value for loading state?

Back 49

It means the document has finished loading but sub resources such as images are still loading

Front 50

What is the complete value for the loading state?

Back 50

Document and all sub-resources have finished loading

Front 51

Server

Back 51

A computer program or a device that provides functionality for other programs or devices.

Front 52

Servlet

Back 52

A Java used to extend the capabilities of servers that host applications.

Front 53

Where does a servlet run in?

Back 53

A servlet container (web container)

Front 54

Where is the URI and URL in bing.com/what-are-these

Back 54

google.com is the url and what-are-these is the URI

Front 55

What is web.xml?

Back 55

The configuration file of web applications in Java.

Front 56

What does init() do?

Back 56

Initialize a servlet?

Front 57

When is a servlet created?

Back 57

When a user invokes a URL corresponding to a servlet.

Front 58

Service()

Back 58

Servlet container calls service() to handle requests coming from the client.

Front 59

Destroy()

Back 59

Gives your servlet a chance to close database connections, halt background threads or other clean up.

Front 60

What is innerHTML?

Back 60

An element property in JS that is used to get or set the HTML or XML markup contained within the element.

Front 61

What languages do browsers support other than JS?

Back 61

IE also supports VBScript. There was a plugin that would allow IE to read PerlScript.

Front 62

Difference between function and method in JS?

Back 62

In JS, every function is an object. If a value is a function, it's called a method.

Front 63

What does let allow you to do?

Back 63

To create a variable with the scope limited to the black on which it's used.

Front 64

What is an IIFE?

Back 64

Immediately Invoked Function Expression - a JS function that runs as soon as it is defined.

Front 65

What are truthy and falsey values?

Back 65

A value is truthy if the value coerces to true in a boolean context. Falsey values coerce to false in a boolean context.

Front 66

Difference between var, let and const?

Back 66

Var declarations are processed before the execution of the code. The scope of a JS variable declared outside the function is global. Const variable can be assigned once and it cannot be reassigned.