Function, Javascript

Question: Which of the following functions in JavaScript can be used to check whether the input data from a prompt window is number or not
A
toString()

B
Math.floor()

C
perseInt()

D
perseFloat()

Note: perseFloat() will consider all numbers including integers but perseInt() will only consider integer.
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Question: What is the output of the following in JavaScript?
var input="12.51km"; length=parseFloat(input); document.write(length);
A
12.51km

B
12km

C
12.51

D
12

Note: Not available
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Question: The 'function' keyword is optional in JavaScript.
A
True

B
False

Note: Not available
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Question: Which of the following is the highest level of objects in the context of JavaScript?
A
Window

B
Form

C
Array

D
File

Note: Not available
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Question: What will be output of the following javascript code:<!DOCTYPE HTML>
<html>
<head>
<title>Untitled Document</title>
<script>
var tax=.02
function addTax(item){
  var total=item+(item+tax);
  var newTotal=Math.floor(total);
  var fraction=Math.round(total*100)%100;
  if(fraction<10){
	fraction="0"+fraction
  }
  
  total=newTotal+"."+fraction
  alert("Your total is $"+total);
  	
}

</script>
</head>
<body>
<script>
 addTax(1.5);
</script>
</body>
</html>
AYour total is $3.02

BCompile error

CYour total is $1.5

DYour total is $total

Note: Not available

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Question: Which of the following javascript method is used to check if a expression is infinite or not?
A
checkInfinite()

B
isFinite()

C
isInfinite()

D
checkFinite()

Note: Not available
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Question: Which of the following javascript method is used to check if a expression or a variable is NaN or not?
A
isNaN()

B
NaN()

C
checkNaN()

D
notNaN()

Note: Not available
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Question: What will produce output for the following JavaScript code fragment:<script>
var leftOperand=77;
var rightOperand=30;
var divEm=leftOperand/rightOperand;
var nada=0/0;

if(!isFinite(divEm)){
 document.write("Whoa Dude that's a big number!");
}

if(isNaN(nada)){
 document.write("You are dividing nothing by nothing");
}
</script>
AYou are dividing nothing by nothing

BWhoa Dude that's a big number!

CNo output

Dsyntax error

Note: Not available

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Question: What will produce for the following JavaScript code fragment?
var BidA="33"; var BidB="24" document.write(Math.max(BidA,BidB));
A
33

B
24

C
error

D
undefined

Note: Math.max() method automatically convert string arguments into numbers first and then return largest one
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Question: Which of the following method is used to evaluate a string of Java Script code in the context of the specified object?
A
Eval

B
ParseDoule

C
ParseObject

D
Efloat

Note: Not available
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Question: Which of the following functions in JavaScript can be used to check whether the input data from a prompt window is number or not

Question: What is the output of the following in JavaScript?
var input="12.51km"; length=parseFloat(input); document.write(length);

Question: The 'function' keyword is optional in JavaScript.

Question: Which of the following is the highest level of objects in the context of JavaScript?

Question: Which of the following javascript method is used to check if a expression is infinite or not?

Question: Which of the following javascript method is used to check if a expression or a variable is NaN or not?

Question: What will produce for the following JavaScript code fragment?
var BidA="33"; var BidB="24" document.write(Math.max(BidA,BidB));

Question: Which of the following method is used to evaluate a string of Java Script code in the context of the specified object?

Question: Which of the following functions in JavaScript can be used to check whether the input data from a prompt window is number or not

Question: What is the output of the following in JavaScript?var input="12.51km"; length=parseFloat(input); document.write(length);

Question: The 'function' keyword is optional in JavaScript.

Question: Which of the following is the highest level of objects in the context of JavaScript?

Question: Which of the following javascript method is used to check if a expression is infinite or not?

Question: Which of the following javascript method is used to check if a expression or a variable is NaN or not?

Question: What will produce for the following JavaScript code fragment?var BidA="33"; var BidB="24" document.write(Math.max(BidA,BidB));

Question: Which of the following method is used to evaluate a string of Java Script code in the context of the specified object?

Question: What is the output of the following in JavaScript?
var input="12.51km"; length=parseFloat(input); document.write(length);

Question: What will produce for the following JavaScript code fragment?
var BidA="33"; var BidB="24" document.write(Math.max(BidA,BidB));