IES: JS-deck 7 Flashcards

Question 1

Q

HTML confirm

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
displays dialog box & message, OK button, & Cancel button: often used to verify or accept something
don’t overuse: prevents access to parts of page until closed
Syntax
confirm(message)
Example

let text;
if (confirm("Press a button!") == true) {
  text = "You pressed OK!";
} else {
  text = "You canceled!";
}

Question 2

Q

HTML constructor

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
creates and initializes an object instance of a class
create a new object and set values for any existing object properties
Syntax (JS)
constructor(parameters)
Example (JS)

class Car {
  constructor(brand) {  // Constructor
    this.carname = brand;
  }
}
mycar = new Car("Ford");

Question 3

Q

HTML crypto

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
JavaScript is one of the primitive languages used in cryptocurrency blockchain development
HTML is used in crypto coding specifically for the front end of decentralized applications (dApps) defining the structure of web pages

Question 4

Q

HTML decodeURI

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
(JS Global Method) decodes a URI
Syntax
decodeURI(uri)
Example

let uri = "my test.asp?name=ståle&car=saab";
let encoded = encodeURI(uri);
let decoded = decodeURI(encoded);

(Decode a URI after encoding it)

Question 5

Q

HTML decodeURIcomponent

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
(JS Global Method) decodes a URI component
Syntax
decodeURIComponent(uri)
Example

let uri = "https://w3schools.com/my test.asp?name=ståle&car=saab";
let encoded = encodeURIComponent(uri);
let decoded = decodeURIComponent(encoded);

(decode a URI after encoding it)

Question 6

Q

HTML defaultStatus

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
Deprecated: Remove to prevent RUN-TIME ERRORS in future
Syntax
window.defaultStatus
Example
window.defaultStatus = "Default text in the status bar!"

Question 7

Q

HTML document

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
File using HTML to structure & define web page content
Example

<html>
  <head>
    <title>Href Attribute Example</title>
  </head>
  <body>
    <h1>Href Attribute Example</h1>
    <p>
      <a href="https://www.freecodecamp.org/contribute/">The freeCodeCamp Contribution Page</a> shows you how and where you can contribute to freeCodeCamp's community and growth.
    </p>
  </body>
</html>

Question 8

Q

HTML element

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
defined by a start tag, some content, and an end tag
Empty elements have no content (<br></br>) and no end tag
Syntax
Regular element
<tagname>Content goes here...</tagname>
Empty element
<tagname>attribute1 attribute2...
Example

<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
<br>
<!--above-empty element; this comment code readers ignore-->
</body>
</html>

Question 9

Q

HTML elements

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
defined by a start tag, some content, and an end tag
Empty elements have no content (<br></br>) and no end tag
Syntax
Regular element
<tagname>Content goes here...</tagname>
Empty element
<tagname>attribute1 attribute2...
Example

<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
<br>
<!--above-empty element; this comment code readers ignore-->
</body>
</html>

Question 10

Q

HTML embed

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
defines container for external resource, such as web page, picture, media player, or plug-in application
WARNING: most browsers no longer support plugins
Example
<embed type="image/jpg" src="pic_trulli.jpg" width="300" height="200">
(an embedded image)

Question 11

Q

HTML embeds

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
defines container for external resource, such as web page, picture, media player, or plug-in application
WARNING: most browsers no longer support plugins
Example
<embed type="image/jpg" src="pic_trulli.jpg" width="300" height="200">
(an embedded image)

Question 12

Q

HTML encodeURI

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
(JS Global Method) encodes a URI
Syntax
encodeURI(uri)
Example

let uri = "my test.asp?name=ståle&car=saab";
let encoded = encodeURI(uri);

(encode a URI)

Question 13

Q

HTML encodeURIcomponent

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
(JS Global Method) encodes a URI component
encodes special characters including: , / ? : @ & = + $ #
Syntax
encodeURIComponent(uri)
Example

let uri = "https://w3schools.com/my test.asp?name=ståle&car=saab";
let encoded = encodeURIComponent(uri);

(encodes a URI)

Question 14

Q

HTML escape

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
aka- “HTML encoding” converts characters & symbols into HTML entity equivalents: Special characters, such as < and >, replace with corresponding HTML entities, such as < and > .

Question 15

Q

HTML event

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
HTML can let events trigger actions in a browser, like starting a JS when an element is clicked.
Example
Attribute: onerror
Value: script
Description: Script to be run when an error occurs

Question 16

Q

HTML fileUpload

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
Used to access a file or create a point of access for a file
Examples
1. Access an input fileUpload object
var x = document.getElementById("myFile");
2. Create an input fileUpload object

var x = document.createElement("INPUT");
x.setAttribute("type", "file");

Question 17

Q

HTML focus

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
Gives focus to an element (if possible)
Syntax
element.focus()
Example
document.getElementById("myAnchor").focus();
(give focus to an element)

Question 18

Q

HTML form

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
Creates an HTML form for user input: most often sent to a server for processing
This element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc.
Syntax

<form>
.
form elements
.
</form>

Example

<form>
  <label for="fname">First name:</label><br>
  <input type="text" id="fname" name="fname"><br>
  <label for="lname">Last name:</label><br>
  <input type="text" id="lname" name="lname">
</form>

(A form with input fields for text)

Question 19

Q

HTML forms

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
Creates an HTML form for user input: most often sent to a server for processing
This element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc.
Syntax

<form>
.
form elements
.
</form>

Example

<form>
  <label for="fname">First name:</label><br>
  <input type="text" id="fname" name="fname"><br>
  <label for="lname">Last name:</label><br>
  <input type="text" id="lname" name="lname">
</form>

(A form with input fields for text)

Question 20

Q

HTML frame

Answer

A

HTML Name, Window Object, or Property
JS significant: avoid for variable/function names
defines one particular window (frame) within a <frameset>
NOT SUPPORTED IN HTML5