JavaScript Questions & Answers – Scripted Media

This set of Javascript Multiple Choice Questions & Answers (MCQs) focuses on “Scripted Media”.

1. What is the advantage of the code produced graphics being smaller than the images themselves?
a) Bandwidth saving
b) Increase in bandwidth
c) Dynamic advantages
d) Static advantage
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2. Which of the following uses a lot of CPU cycles?
a) GUI
b) Statically generated graphics
c) Dynamically generated graphics
d) Images
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3. Which HTML element is used to include images?
a) image
b) img
c) src
d) sourcing
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4. What is the purpose of image replacement?
a) To replace an image
b) To implement special effects
c) Removal of image rollovers
d) Implementation of image rollovers
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5. When is JavaScript called obtrusive?
a) JavaScript code is medium sized
b) JavaScript code is small
c) JavaScript code is so large
d) JavaScript code is Very small
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6. Which is a possible way of finding all the img elements in the document?
a) document(images)
b) document.images[]
c) document(img)
d) doc(img)
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7. Which of the following elements are used to include audio?
a) audio
b) video
c) svg
d) aud
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8. Which of the following attributes are common to both audio and video?
a) enter
b) control
c) controls
d) add
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9. Which of the following is not the property of the video tag?
a) width
b) height
c) breadth
d) area
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10. Which of the following is the parameter used to invoke the Audio() constructor?
a) File type
b) Music type
c) Both File and Music
d) Video type
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11. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var num = 098;
   var n = num.valueOf()
   document.getElementById("demo").innerHTML = n;
}
</script>

a) 098
b) 98
c) Error
d) Undefined
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12. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var num = 3+2;
   var n = num.valueOf()
   document.getElementById("demo").innerHTML = n;
}
</script>

a) 5
b) 3+2
c) Error
d) Undefined
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13. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var num = 13.3714;
   document.getElementById("demo").innerHTML = num.toPrecision(3);
}
</script>

a) 13
b) 13.3714
c) 13.3
d) 13.4
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14. What will be the output of the following JavaScript code?

<script>
var num = new Number(1000000).toLocaleString("fi-FI");
document.write(num);
</script>

a) 1 000 000
b) 1 0 00000
c) 100 000 0
d) Undefined
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15. What will be the output of the following JavaScript code?

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

a) 10000
b) -infinity
c) infinity
d) error
View Answer

Sanfoundry Global Education & Learning Series – Javascript Programming.