Quiz 6 19FL-IT250-01 - Advanced Web Design

• Question 1

  4 out of 4 points

  	Which type value for the input element triggers validation in modern browsers?​
  	Correct Answer: c.  ​number

• Question 2

  0 out of 4 points

  	Enhancements to HTML and to modern browsers have allowed browsers themselves to perform many validation tasks without any extra JavaScript. This type of validation is known as __________ validation. ​
  	Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match browser-based Exact Match browser based Exact Match native Exact Match HTML5 Exact Match HTML 5

• Question 3

  0 out of 4 points

  	In modern browsers, which attribute of an input element prevents the form from being submitted if the field is left blank?​
  	Correct Answer: a.  ​novalidate

• Question 4

  4 out of 4 points

  	To check a group of fields and trigger an error message if any of them is empty, you use a(n) ____ statement.​
  	Correct Answer: a.  ​loop

• Question 5

  4 out of 4 points

  	Validation errors found by modern browsers are reported in​ ____.
  	Correct Answer: d.  ​bubbles

• Question 6

  4 out of 4 points

  	For any fields that require numeric values, you can use JavaScript’s built-in ____ function to determine whether a user actually entered a number.
  	Correct Answer: a.  ​isNaN()

• Question 7

  4 out of 4 points

  	Creating a function to validate required fields generally involves retrieving the values of the required fields and checking if the value of any of them is​ __________.
  	Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match an empty string Exact Match empty string Exact Match empty Exact Match ""

• Question 8

  4 out of 4 points

  	You use the ____ method on an object to block the action normally associated with an event.​
  	Correct Answer: d.  ​preventDefault()

• Question 9

  4 out of 4 points

  	Instead of document.getElementsByTagName("form")[0], you could use the code​
  	Correct Answer: d.  ​document.forms[0]

• Question 10

  4 out of 4 points

  	By default, browsers create an collection of form objects that you can reference using array notation.
  	Correct Answer:  True

• Question 11

  4 out of 4 points

  	Many aspects of the way browsers present browser-based validation feedback are customizable through the properties and methods of the​ ____.
  	Correct Answer: a.  ​constraint validation API

• Question 12

  4 out of 4 points

  	To display no default value on a selection list, you set its ____ property to -1.
  	Correct Answer: a.  selectedIndex

• Question 13

  4 out of 4 points

  	What element property would you use when copying the contents of one text field to another text field?​
  	Correct Answer: b.  ​value

• Question 14

  4 out of 4 points

  	For all custom validation, it can be helpful to use the __________ structure​ for handling errors.
  	Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match try/catch Exact Match try catch

• Question 15

  4 out of 4 points

  	Use of the ____ attribute of the form element is not allowed in the strict DTD for XHTML.​
  	Correct Answer: b.  ​name

• Question 16

  4 out of 4 points

  	Which attribute enhances usability in modern browsers?​
  	Correct Answer: c.  ​placeholder

• Question 17

  0 out of 4 points

  	Assistive functions perform a type of validation.​
  	Correct Answer:  False

• Question 18

  4 out of 4 points

  	In general, modern browsers display validation feedback after the ____ event is triggered by a form.​
  	Correct Answer: b.  ​submit

• Question 19

  4 out of 4 points

  	You can use HTML to set the default value of a selection list so no option is selected.​
  	Correct Answer:  False

• Question 20

  4 out of 4 points

  	While JavaScript lets you perform validation in a user’s browser, the server-side programs that receive form data generally perform validation as well.​
  	Correct Answer:  True

• Question 21

  0 out of 4 points

  	Match each item with a statement below:
  	Question Correct Match Displays a validation error in a modern browser  a.  bubble ​Reduce the likelihood of user errors when completing a form  h.  assistive functions Enables customization of validation feedback in modern browsers  c.  constraint validation API Persistence required for a user to accomplish a goal  j.  ​friction Determines whether a value is not a number  d.  isNaN() function Checking that information provided by users conforms to rules  b.  validation Provides guidance about what data should be entered in a text box  e.  placeholder If all its properties are false, then its value is true  g.  validity object Stops a form from being submitted when the submit event is triggered  i.  preventDefault() ​Indicates that a form element must have a value  f.  required

• Question 22

  4 out of 4 points

  	Modern browsers can perform many validation tasks themselves without any extra JavaScript.​
  	Correct Answer:  True

• Question 23

  4 out of 4 points

  	To check if an option button is selected, you access the value of its ____ property.
  	Correct Answer: b.  checked

• Question 24

  4 out of 4 points

  	To send the values entered in a form to a web server with JavaScript, you use the __________ method.​
  	Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match submit Exact Match submit()

• Question 25

  4 out of 4 points

  	The ____ event fires when a form is submitted.​
  	Correct Answer: d.  ​submit