JavaScript/JavaScript MCQ Set 2 Sample Test,Sample questions

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Question: 
 What will be the equivalent output of the following JavaScript code snippet?

x = ~-y;
w = x = y = z;
q = a?b:c?d:e?f:g;

1.x = ~(-y); w = (x = (y = z)); q = a?b:(c?d:(e?f:g));

2.x = a?b:(c?d:(e?f:g)); q = ~(-y); w = (x = (y = z));

3.x = (x = (y = z));w = ~(-y); q = a?b:(c?d:(e?f:g));

4.x = ~(-y); w = (x = (y = z)); q = (c?d:(e?f:g));

Question: 
 What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
    document.getElementById("demo").innerHTML = Math.cbrt(125);
}
</script>

1.125

2.25

3.5

4.Error

Question: 
 What will be the output of the following JavaScript code?

string  a = ”hi”;
string  b =”there”;
alert(a+b);

1. hi

2.there

3.hithere

4.undefined

Question: 
An expression that can legally appear on the left side of an assignment expression.” is a well known explanation for variables, properties of objects, and elements of arrays. They are called ___________

1.Properties

2.Prototypes

3.Lvalue

4.Definition

Question: 
What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
    document.getElementById("demo").innerHTML = Math.abs(-7.25);
}
</script>

1.7.25

2.-7.25

3.7

4. -7

Question: 
What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
    document.getElementById("demo").innerHTML = Math.acos(0.5);
}
</script>

1.1.01

2.1.047

3.1.00

4. 1.4

Question: 
What will be the output of the following JavaScript code?

function height()
{	
    var  height = 123.56;
    var type = (height>=190) ? "tall" : "short";
    return type;
}

1.123.56

2.190

3.tall

4.short

Question: 
What will be the output of the following JavaScript code?

function output(object)
{
	var place=object ? object.place : “Italy”;
	return “clean:”+ place;
}
console.log(output({place:India}));

1. clean:India

2.clean:Italy

3.error

4.undefined

Question: 
What will be the output of the following JavaScript code?

function output(option)
{
	return (option ?  “yes” :  “no”);
}
	bool ans=true;
console.log(output(ans));

1.Yes

2.No

3.Runtime error

4. Compilation error

Posted on by Online Exam TestTeam

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