JavaScript, Web Development

JavaScript

Question: While coding a loop, you come across a condition where you have to ignore the rest of the statements and continue with the beginning of the loop. Which statement would you use?
A
exit

B
return

C
continue

D
while

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Question: You want to display an alert to the user which contains a ' character. Which character would you use to escape the ' character?
A
*

B
\

C
-

D
@

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Question: Which best describes void?
A
A method

B
A function

C
A statement

D
An operator

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Question: Which of the following is not a valid JavaScript operator?
A
|

B
===

C
<<<

D
^

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Question: Which of the following is not a valid HTML event?
A
onunload

B
onchange

C
onupdate

D
onkeydown

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Question: The following code snippet is used in form validation, the validate function returns a true if all validations are correct and returns false if the validation fails. The data is always submitted even if the validation fails, what could be the cause for this? <form name=frmadd method=post action=add.asp onsubmit=" validate() ">
A
There is no error, the code is fine

B
b. There should be a return statement before the call to the validate function

C
c. onsubmit=" validate() " should be replaced with " JavaScript:validate() "

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Question: Consider the following code: var seter=new Object() seter.color= " blue " How would you delete the color property of the variable seter?
A
seter.color delete;

B
delete seter.color

C
delete(seter.color)

D
seter.color.delete

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Question: An HTML form contains 10 checkboxes all named " chkItems ". Which JavaScript function can be used for checking all the checkboxes together?
A function CheckAll()
   {
           for (z = 0; z < document.forms.chkItems.length; z++)
           {
           document.forms.chkItems[z].checked=true
           }
   }

B function CheckAll()
   {
           for (z = 0; z < document.forms[0].chkItems.length; z++)
           {
           document.forms[0].chkItems[z].checked=true
           }
   }

C function CheckAll()
   {
           for (z = 0; z < document.forms[0].chkItems.length; z++)
           {
           document.forms[0].chkItems.list[z].checked=true
           }
   }

D function CheckAll()
   {
           for (z = 0; z < document.forms[0].chkItems.length; z++)
           {
           document.forms[0].chkItems.list[z].checked=false
           }
   }

Note: Not available

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Question: Which JavaScript feature uses JAR files?
A
Object signing

B
Style sheets

C
Netcaster channels

D
Image rollovers

E
Form validation

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Question: Using JavaScript, how can you determine whether the browser is Netscape or some other?
A
if(appName=="Netscape"){}

B
if(document.appName=="Netscape"){}

C
if(navigator=="Netscape"){}

D
if(browser=="Netscape"){}

E
None of the above

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Question: While coding a loop, you come across a condition where you have to ignore the rest of the statements and continue with the beginning of the loop. Which statement would you use?

Question: You want to display an alert to the user which contains a ' character. Which character would you use to escape the ' character?

Question: Which best describes void?

Question: Which of the following is not a valid JavaScript operator?

Question: Which of the following is not a valid HTML event?

Question: Consider the following code: var seter=new Object() seter.color= " blue " How would you delete the color property of the variable seter?

Question: An HTML form contains 10 checkboxes all named " chkItems ". Which JavaScript function can be used for checking all the checkboxes together?

Question: Which JavaScript feature uses JAR files?

Question: Using JavaScript, how can you determine whether the browser is Netscape or some other?