JavaScript Questions & Answers – Parsing Values using JavaScript – I

This set of Javascript Multiple Choice Questions & Answers (MCQs) focuses on “Parsing Values using JavaScript – I”.

1. What is the function of the XML parser?
a) Converts XML document to XML DOM object
b) Converts XML DOM object to XML document
c) Converts XML DOM object to a comment
d) Compiles the html document
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2. What is the purpose of the method ActiveXObject()?
a) Used to call automation object
b) Used to reference automation object
c) Used to instantiate automation object
d) Used to call & reference automation object
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3. What is the purpose of the url json?
a) Belongs to JSON object
b) Reference JSON formatted data
c) Belongs to JSON
d) Compiles json data
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4. What is the parameter of the method Date.parse()?
a) date
b) string
c) datestring
d) string
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5. Which is the function in JavaScript that will print the current page in JavaScript?
a) print()
b) printcurrent()
c) print(now)
d) print(this)
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6. To which of the following object does the print() method belong to?
a) window
b) document
c) hash
d) string
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7. What will happen if the radix parameter of the parseInt() function is omitted?
a) Runs in assumption
b) Throws exception
c) Aborts
d) Taken as 0
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8. What will be the radix value if the string begins with 0x?
a) 13
b) 14
c) 15
d) 16
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9. What is the function of the parseInt() method?
a) Parses a data type and stores in an integer
b) Parses a string and returns an integer
c) Parses an integer and returns a string
d) Parses a string and return an object
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10. What does it indicate when the radix value is 16?
a) String begins with 0x
b) String begins with 0
c) String begins with 0P
d) String begins with FF
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11. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
var str = "HELLO, LOOK AT YOU!"; 
var patt1 = /\BLO/;
var result = str.search(patt1);
document.getElementById("demo").innerHTML = result;
</script>

a) 4
b) 7
c) 3
d) 1
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12. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var str = "welcome to.\0JavaScript test."; 
   var patt1 = /\0/;
   var result = str.search(patt1);
   document.getElementById("demo").innerHTML = result;
}
</script>

a) 12
b) 13
c) 10
d) 11
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13. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var str = "hello\f world."; 
   var patt1 = /\f/;
   var result = str.search(patt1);
   document.getElementById("demo").innerHTML = result;
}
</script>

a) 6
b) 5
c) 8
d) -1
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14. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var str = "hello \r world."; 
   var patt1 = /\r/;
   var result = str.search(patt1);
   document.getElementById("demo").innerHTML = result;
}
</script>

a) 6
b) 5
c) 3
d) -1
View Answer

15. What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
function myFunction() 
{
   var str = "SanfoundryJS using JS"; 
   var patt1 = /\bJS/;
   var result = str.search(patt1);
   document.getElementById("demo").innerHTML = result;
}
</script>

a) 10
b) 12
c) 19
d) -1
View Answer

Sanfoundry Global Education & Learning Series – Javascript Programming.