Question 1

Instead of document.getElementsByTagName("form")[0] , you could use the code

Accepted Answer

A) document.forms[0] 
B) document.form[0] 
C)  document.getFormElements[0] 
D) document.forms.form[0] 
A) document.forms[0] 
B) document.form[0] 
C)  document.getFormElements[0] 
D) document.forms.form[0] A

Question 2

Describe two advantages of referencing form objects using methods such as getElementById()rather than the forms array.

Accepted Answer

Any two of the following: 
One advantage of referencing form objects using methods such as getElementById(   rather than the forms array is that you don't need to switch between using one syntax for  referencing form objects and another syntax for non- form objects. 
In addition, using  Document object methods makes your code more flexible when you need the same code to  be able to refer to both form and non- form elements. 
Finally, use of the name attribute is not  allowed in the strict DTD for XHTML, so if you're writing JavaScript to work with XHTML  documents, you cannot use the forms array or other browser arrays.

Question 3

In what situations can you get more accurate information on a form byusing form fields other than text boxes? Name two types of fields you might use instead.

Accepted Answer

Sometimes the information requested for a field is restricted  to a small, discrete list-the names of a few credit cards, for instance . Asking users to type this information opens your form to the possibility  that they'll misspell a word, use an abbreviation that your back-end system doesn't recognize,  or simply enter data that's not within the acceptable parameters . Instead, you can use other types of form fields  to present users with acceptable choices, and limit their options to those choices. 
Any two of the following: 
option buttons 
selection lists 
check boxes 
sliders 
data lists

Question 4

Match between columns
                        Premises: Determines whether a value is not a number
Enables customization of validation feedback in modern browsers
Indicates that a form element must have a value
Checking that information provided by users conforms to rules
If all its properties are false , then its value is true
Stops a form from being submitted when the submit event is triggered
Persistence required for a user to accomplish a goal
Displays a validation error in a modern browser
Reduce the likelihood of user errors when completing a form
Provides guidance about what data should be entered in a text box

Accepted Answer

The Answer of validity object and bubble and friction and is...

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

For all custom validation, it can be helpful to use the __________  structure for handling errors.

Accepted Answer

The answer of For all custom validation, it can be...

Question 7

How can you add options to a selection list with JavaScript?

Accepted Answer

Using the methods  for creatin

Question 8

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

Accepted Answer

A)  debugger 
B) loop 
C)  console.log() 
D) submit 
A)  debugger 
B) loop 
C)  console.log() 
D) submit

Question 9

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

Accepted Answer

A)  selectedIndex 
B)  checked 
C)  selected 
D)  value 
A)  selectedIndex 
B)  checked 
C)  selected 
D)  value

Question 10

The ____ event fires when a form is submitted.

Accepted Answer

A) clear 
B) blur 
C) input 
D) submit 
A) clear 
B) blur 
C) input 
D) submit

Question 11

In modern browsers, which attribute of an input element prevents the form from being submitted if the field is left blank?

Accepted Answer

A)  novalidate 
B)  required 
C)  min 
D)  max 
A)  novalidate 
B)  required 
C)  min 
D)  max

Question 12

You can use HTML to set the default value of a selection list so no option is selected.

Accepted Answer

A) True 
 B)False

Question 13

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.

Accepted Answer

The answer of Enhancements to HTML and to modern browsers...

Question 14

When a control's value is found to be invalid during constraint validation, the ____ event is triggered.

Accepted Answer

A) input 
B) invalid 
C) change 
D) focus 
A) input 
B) invalid 
C) change 
D) focus

Question 15

Modern browsers can perform many validation tasks themselves without any extra JavaScript.

Accepted Answer

A) True 
 B)False

Question 16

Which form element is useful for limiting user options to a set of choices?

Accepted Answer

A) textarea 
B) selection list 
C) text input box 
D) submit button 
A) textarea 
B) selection list 
C) text input box 
D) submit button

Question 17

Assistive functions perform a type of validation.

Accepted Answer

A) True 
 B)False

Question 18

Validation errors found by modern browsers are reported in ____.

Accepted Answer

A)  separate browser windows 
B) the Address bar 
C) the Status bar 
D) bubbles 
A)  separate browser windows 
B) the Address bar 
C) the Status bar 
D) bubbles

Question 19

Which attribute enhances usability in modern browsers?

Accepted Answer

A)  id 
B)  src 
C)  placeholder 
D)  value 
A)  id 
B)  src 
C)  placeholder 
D)  value

Question 20

You create an empty document fragment using the ____ method.

Accepted Answer

A) cloneNode() 
B)  createElement() 
C) submit() 
D)  createDocumentFragment() 
A) cloneNode() 
B)  createElement() 
C) submit() 
D)  createDocumentFragment()

Instead of document.getElementsByTagName("form")[0] , you could use the code

Describe two advantages of referencing form objects using methods such as getElementById()rather than the forms array.

In what situations can you get more accurate information on a form byusing form fields other than text boxes? Name two types of fields you might use instead.

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

For all custom validation, it can be helpful to use the __________ structure for handling errors.

How can you add options to a selection list with JavaScript?

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

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

The ____ event fires when a form is submitted.

In modern browsers, which attribute of an input element prevents the form from being submitted if the field is left blank?

You can use HTML to set the default value of a selection list so no option is selected.

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.

When a control's value is found to be invalid during constraint validation, the ____ event is triggered.

Modern browsers can perform many validation tasks themselves without any extra JavaScript.

Which form element is useful for limiting user options to a set of choices?

Assistive functions perform a type of validation.

Validation errors found by modern browsers are reported in ____.

Which attribute enhances usability in modern browsers?

You create an empty document fragment using the ____ method.

Introduction to Javascript

Working With Functions Data Types and Operators

Building Arrays and Controlling Flow

Debugging and Error Handling

Working With the Document Object Model Dom and Dhtml

Using Object Oriented Javascript

Manipulating Data in Strings and Arrays

Managing State Information and Security

Programming for Mobile Devices and Touchscreens

Updating Web Pages With Ajax

Introduction to Jquery

Filters

Exam 6: Enhancing and Validating Forms

Instead of document.getElementsByTagName("form")[0] , you could use the code

Describe two advantages of referencing form objects using methods such as getElementById()rather than the forms array.

In what situations can you get more accurate information on a form byusing form fields other than text boxes? Name two types of fields you might use instead.

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

For all custom validation, it can be helpful to use the __________ structure for handling errors.

How can you add options to a selection list with JavaScript?

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

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

The ____ event fires when a form is submitted.

In modern browsers, which attribute of an input element prevents the form from being submitted if the field is left blank?

You can use HTML to set the default value of a selection list so no option is selected.

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.

When a control's value is found to be invalid during constraint validation, the ____ event is triggered.

Modern browsers can perform many validation tasks themselves without any extra JavaScript.

Which form element is useful for limiting user options to a set of choices?

Assistive functions perform a type of validation.

Validation errors found by modern browsers are reported in ____.

Which attribute enhances usability in modern browsers?

You create an empty document fragment using the ____ method.

Introduction to Javascript

Working With Functions Data Types and Operators

Building Arrays and Controlling Flow

Debugging and Error Handling

Working With the Document Object Model Dom and Dhtml

Using Object Oriented Javascript

Manipulating Data in Strings and Arrays

Managing State Information and Security

Programming for Mobile Devices and Touchscreens

Updating Web Pages With Ajax

Introduction to Jquery

Filters