Javascript

Question: What is the correct syntax to read the value of a form element?
A
document.window.formName.elementName.value

B
window.document.formName.elementName.value

C
formName.elementName.value

D
window.formName.elementName.value

Note: Not available
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Question: When a variable is declared without assigning a value then the variable contains
A
null value

B
undefined value

C
void

D
zero

Note: Not available
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Question: How do you create a JavaScript general object with a built-in class?
A
var obj=Object()

B
var obj={}

C
var obj=new Object()

D
var obj=[]

Note: Not available
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Question: Which of the following is best describe the action of setInterval() function?
A
It execute the script action only once

B
It does not repeat the script action

C
It repeats a script action after a certain time

D
It is not a function anyway

Note: Not available
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Question: What is the correct syntax to read the value of a form element?