JavaScript Course | Practice Quiz-2

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Question 1

Which of the following javascript functions allows you to get user input data?
  • alert
  • prompt
  • confirm
  • None of the above
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Question 2

Which logical operator only accepts a single operand?
  • &&(AND)
  • ||(OR)
  • !(NOT)
  • None of the above
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Question 3

What will be the result of the following code? Javascript 
<script>   document.write( true && 1 && 3); </script>
  • 0
  • 1
  • true
  • 3
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Question 4

What will be the output of the following code? Javascript 
 <script>    document.write((0 && 1) || (1 || 0));  </script>
  • 0
  • false
  • true
  • 1
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Question 5

What will be the output of the following code? Javascript 
<script>  let ans = 0 / 0;  document.write(ans); </script>
  • 0
  • infinity
  • NaN
  • None of the above
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Question 6

What will be the output of the following code? Javascript 
<script>  let i = 30;   if( i == 10 || i > 20){     console.log('Hola');   }else if( i == 5){     console.log('Breaking up the code');   }else{     console.log('Adios');  } </script>
  • Hola
  • Breaking up the code
  • Adios
  • None of the above
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Question 7

What will be the output of the following code? Javascript 
 <script>    let ans = 1;    document.write( ans === '1');  </script>
  • true
  • false
  • 0
  • None of the above
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Question 8

What will be the output of the following code? Javascript 
 <script>   let age = 20;   let result = age>18 ? 'Great' : 'Not so great';   document.write(result);  </script>
  • Great
  • Not so great
  • true
  • None of the above
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Question 9

What will be the output of the following code? Javascript 
<script>   let y = 1;   y = typeof x;    document.write(typeof y); </script>
  • string
  • null
  • number
  • boolean
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Question 10

What will be the output of the following code? Javascript 
 <script>     var x = [typeof x, typeof y][1];     document.write(typeof typeof x);  </script>
  • undefined
  • string
  • number
  • boolean
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There are 10 questions to complete.

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