jQuery

Question 1

What is jQuery?

Answer 1

A open source library of JS code

Question 2

What is the jQuery selector function?

Answer 2

jQuery() or $()

Question 3

What does the jQuery selector function return?

Answer 3

jQuery object with reference to element

Question 4

Why would someone use jQuery over vanilla Javascript?

Answer 4

Faster and less code to type

** cross browser compatibility

Question 5

What are some downsides from using jQuery over vanilla Javascript?

Answer 5

Huge library to import

People become too reliant on jQuery and can’t do more complicated DOM manipulations with regular JS

Question 6

Why do we use the tag at the bottom of the body, instead of putting it inside the tag?

Answer 6

HTML elements need to load first before the JS can run and manipulate them

Question 7

How do you get the text out of an HTML element?

Answer 7

.text()

Question 8

How do you get the value out of an HTML input field?

Answer 8

.val()

Question 9

What’s the difference between .text() and .html()?

Answer 9

** .text - returns only text content** use this

.html - returns html elements

Question 10

How does ajax work?

Answer 10

• give it an object literal with relevant data with destination, how we’re sending data, how we’re getting it back

Question 11

Why did we need the jQuery CDN?

Answer 11

Because ajax uses jQuery methods

Question 12

How do you specify the request method (GET, POST, etc.) when calling ajax?

Answer 12

Under method property

Question 13

Why might you need to build elements dynamically with data from an AJAX request?

Answer 13

When we get data can populate information on a webpage with the data received from the request

Question 14

Should you use named functions or anonymous functions for success and error handlers?

Answer 14

Named functions, have ways to reference them later

syntax of config options shorter