Answer & Solution
Answer: Option C
Solution:
The output will be an error because 'b' is block-scoped and not accessible outside the 'if' block.
Q
What will be the output of the following code: if (true) { let b = 60; } console.log(b);
Related Questions on Average
What will be the output of the following code: var x = 5; var x = 10; console.log(x);
A). 5
B). 10
C). Error
D). undefined
What will be the output of the following code: let c = 70; { let c = 80; console.log(c); } console.log(c);
A). 70 80 80
B). 80 80
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What will be the output of the following code: let y = 10; let y = 20; console.log(y);
A). 10
B). 20
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What will be the output of the following code: const z = 30; z = 40; console.log(z);
A). 30
B). 40
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D). undefined
What will be the output of the following code: const d = 90; d = 100; console.log(d);
A). 90
B). 100
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What will be the output of the following code: console.log(a); var a = 50;
A). 50
B). undefined
C). Error
D). null
Which of the following statements is true about 'const'?
A). It allows re-declaration
B). It allows reassignment
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D). It is function-scoped
Which keyword should be used by default to declare variables in modern JavaScript?
A). var
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C). const
D). Either B or C
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A). Block scope
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C). Module scope
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