(function() { return [ (() => this.x).bind({ x: 'inner' })(), (() => this.x)() ] }).call({ x: 'outer' });  

1.  ['inner', 'outer']

2.  ['outer', 'outer']

3.  [undefined, undefined]

4.  Error

View Answer  
4
Correct Answer :

['outer', 'outer']


Explanation :
No Explanation available for this question

let x, { x: y = 1 } = { x }; y;

1.  undefined

2.  1

3.  { x: 1 }

4.  Error

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

(function() { let f = this class g { } : class h { }; return [ typeof f, typeof h ]; })();  

1.  ["function", "undefined"]

2.  ["function", "function"]

3.  ["undefined", "undefined"]

4.  Error

View Answer  
4
Correct Answer :

["function", "undefined"]


Explanation :
No Explanation available for this question

(typeof (new (class { class () {} })))  

1.  "function"

2.  "object"

3.  "undefined"

4.  Error

View Answer  
4
Correct Answer :

"object"


Explanation :
No Explanation available for this question

typeof (new (class F extends (String, Array) { })).substring  

1.  "function"

2.  "object"

3.  "undefined"

4.  Error

View Answer  
4
Correct Answer :

"undefined"


Explanation :
No Explanation available for this question

[...[...'...']].length

1.  1

2.  3

3.  6

4.  Error

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

typeof (function* f() { yield f })().next().next()  

1.  "function"

2.  "generator"

3.  "object"

4.  Error

View Answer  
4
Correct Answer :

Error


Explanation :
No Explanation available for this question

typeof (new class f() { [f]() { }, f: { } })[`${f}`]  

1.  "function"

2.  "undefined"

3.  "object"

4.  Error

View Answer  
4
Correct Answer :

Error


Explanation :
No Explanation available for this question

typeof `${{Object}}`.prototype  

1.  "function"

2.  "undefined"

3.  "object"

4.  Error

View Answer  
4
Correct Answer :

"undefined"


Explanation :
No Explanation available for this question

((...x, xs)=>x)(1,2,3)  

1.  1

2.  3

3.  [1,2,3]

4.  Error

View Answer  
4
Correct Answer :

Error


Explanation :
No Explanation available for this question
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