Which one of the following is the correct output for the given JavaScript code const object1 ={}; a = Symbol('a'); b = Symbol.for('b'); object1[a]='harry'; object1[b]='derry'; const objectSymbols=Object.getOwnPropertySymbols(object1); console.log(objectSymbols.length);  

1.  0

2.  1

3.  2

4.  3

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

What kind of work is being performed in the following given part of JavaScript's code const o = {x:1, y:{z:[false,null,""]}}; const s = JSON.stringify(o);  

1.  Object Encapsulation

2.  Object Encoding

3.  Object Abstraction

4.  Object Serialization

View Answer  
4
Correct Answer :

Object Serialization


Explanation :
No Explanation available for this question

What will be the output obtained by last "shift ()" in the given code of JavaScript var a =[]; a.unshift(5); a.unshift(22); a.shift(); a.unshift(3,[4,5]); a.shift(); a.shift(); a.shift();  

1.  5

2.  22

3.  [4,5]

4.  [3,4,5]

View Answer  
4
Correct Answer :

5


Explanation :
No Explanation available for this question

Which one of the following options is the correct output for the given code of java script let sum =0; const arr = [101,150,201,30]; arr.forEach(function(element) { sum=sum+element; }); console.log(sum);  

1.  70

2.  75

3.  482

4.  0

View Answer  
4
Correct Answer :

482


Explanation :
No Explanation available for this question

What will happen if we execute the following piece of code const arr = [4,3,,1]; for(i=0;i

1.  4 3 1

2.  4 3 undefined 1

3.  4 3

4.  Error

View Answer  
4
Correct Answer :

4 3 undefined 1


Explanation :
No Explanation available for this question

What output we may get if we execute the following JavaScript code function myFunction() { var i; for (i = 0; i< 5; i++) { if (i === 3) { continue; } console.log(i); } } myFunction();  

1.  0 1 2 3 4

2.  0 1 2 4

3.  0 1 2

4.  Error

View Answer  
4
Correct Answer :

0 1 2 4


Explanation :
No Explanation available for this question

What will be the output of the following JavaScript code const string1 = [1,2,3]; const string2 = [4,5,6,7,8,9,10]; const result = string1.concat(string2); console.log(result);  

1.  [1,2,3]

2.  [4,5,6,7,8,9,10]

3.  [1,2,3,4,5,6,7,8,9,10]

4.  Error

View Answer  
4
Correct Answer :

[1,2,3,4,5,6,7,8,9,10]


Explanation :
No Explanation available for this question

Which one of the following options is the correct output for the given code of JavaScript const arr = [1, 3, 5, 8 ,11]; const value = Math.max.apply(null,arr); console.log(value);  

1.  8

2.  11

3.  3

4.  1

View Answer  
4
Correct Answer :

11


Explanation :
No Explanation available for this question

Which one of the following options is the correct output for the given code of JavaScript const arr = [1, 3, 5, 8 ,11]; const value = Math.min.apply(null,arr); console.log(value);  

1.  1

2.  11

3.  3

4.  8

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

Which one of the following options is the correct output for the given code of JavaScript const person = { name: "James", getName:function() { return this.name; } }; const unboundName = person.getName; const boundName = unboundName.bind(person); console.log(boundName());  

1.  James

2.  compilation error

3.  runtime error

4.  undefined

View Answer  
4
Correct Answer :

James


Explanation :
No Explanation available for this question
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