Question 11 getElementsByClassName() is not supported by Microsoft until IE9 Tru

Question

Question 11

getElementsByClassName() is not supported by Microsoft until IE9

True

False

2.5 points

Question 12

Adding a new node to the DOM tree requires 2 steps. Which 2?

createChild()

createElement()

appendElement()

appendChild()

2.5 points

Question 13

If the following code were placed in a style sheet, #hottag would be a CSS _____.

.caution {font-size: 12pt; color: blue;}
#hottag {width: 620px;}

tag selector

ID selector

class selector

class property

2.5 points

Question 14

The form tag's method attribute ____.

determines the URL the form is submitted to

determines how form data is submitted

determines if cookies are encrypted or not

determines whether the form submission occurs or not

2.5 points

Question 15

You have 6 radio buttons all with the name radColor on a html form named f1. If the user checks the last radio button listed, what is the value of x after this code runs?

for(var i=0; i<6; i++) {
if(document.f1.radAge[i].checked == true) {
var x = i;
}
}

4

5

0

6

3.5 points

Question 16

The ____ method returns the first element in a document with a matching id attribute.

getElementByTab()

getElementByName()

getElementById()

getElementByIdTag()

2.5 points

Question 17

"If a HTML select element (a drop-down list) displays only a single option, then the item at index 1 is selected by default."

True

False

2.5 points

Question 18

"The options for a HTML select list are ordered like an array, with the first option being at index 0, the second option at index 1, and so on."

True

False

2.5 points

Question 19

The ____ property of the Image object allows JavaScript to dynamically change an image.

img

src

path

file

2.5 points

Question 20

Which of the following return an array? Choose all that apply.

getElementById()

getEementsByTagName()

getElementsByName()

getElementsByClassName()

2.5 points

Question 21

"You want a submitted form to be validated before submittion, the form is to be submitted using a submit button, and you use the onsubmit() event handler of the form tag to call the function that validates the HTML form. So _____."

such an approach would never work in a million years

the validation function that is called must return either true or false

2.5 points

Question 22

The _____ DOM method allows inserting a new DOM node before an existing DOM element.

setAttribute()

insertBefore()

appendChild()

addFirst()

2.5 points

Question 23

Which of the following would create a new script element?

createElement("script").value = x;

x = createElement("script");

document.createElement = "script";

x = document.createElement("script");

3.5 points

Question 24

The form tag's _____ attribute determines the URL of the page on the web server that a form is submitted to.

accept-charset

enctype

method

action

2.5 points

Question 25

The _____ DOM method puts a created element into the DOM as the last child of the parent node.

setAttribute()

insertBefore()

appendChild()

append()

2.5 points

Question 26

"If an element has a default action, the event handler for that element runs before the default bahavior occurs."

True

False

2.5 points

Question 27

"When you have a group of radio buttons or checkboxes, you can use the ____ property to determine which element or elements in the group is selected."

value

size

checked

option

2.5 points

Question 28

You have a form named f1 and a textbox in that form named txtName. What happens when the if-block executes?

if(document.f1.txtName.value != "")

the test is true if the user has typed something in the textbox.

the test is false if the user has not typed something in the textbox.

3.5 points

Question 29

Using a select list with an id of "toppings", you can get the selected option value using ____.

opt = document.getElementbyId("toppings").value;

"opt = document.getElementbyId("toppings") {value};

opt = document.getElementbyId("toppings")[value];

opt = document.getElementbyId("value");

2.5 points

Question 30

____ allows JavaScript to store and retrieve an image from memory rather than download the image each time it is needed from the web server.

Image refreshing

Image caching

Image quick loading

Double buffering

2.5 points

Question 31

"If a CSS property is called font-weight, what would the corresponding javaScript reference be?"

fontWeight

font.weight

font-Weight

FontWeight

2.5 points

Question 32

In a style sheet, #sidebar and .caution, as shown below, would be called CSS _____.

<style>
.caution {font-size: 12pt; color: blue;}
  #sidebar {width: 620px;}
</style>

tokens

selectors

labels

markers

Question 33

The _____ DOM method allows removing a node

removeChild()

removeItem()

deleteItem()

deleteChild()

createChild()

createElement()

appendElement()

appendChild()

Explanation / Answer

Answer 11:

True , it was supported untill IE8

Answer 12 :

create element and append child

var para = document.createElement("p"); here i am creatting element p and storing it into variable para .

var node = document.createTextNode("This is a new paragraph."); // here i am creating a text node and storing it into var node.

para.appendChild(node); // and here i am appending the child

Answer 13 :

Id selector

tag {} is a tag selector. #id {} is an id selector. .class {} is a class selector. There is no such thing as class property.

Answer 14:

determines the URL the form is submitted to

form tag has two methods :

get and post

post is used as http request

but in get method data is appended in the url and visible to any one

Answer 15:

5 , As array index starts from 0 in most of the languages if u have 6 controls with same name , it mean u have cont0,,, til cont5

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