Answer & Solution
Answer: Option A
Solution:
The += operator performs concatenation if one of the operands is a string, resulting in '105'.
Q
What will the following code snippet output: let a = 10; a += '5'; console.log(a); in JavaScript?
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A). Number
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B). String
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A). Not a Number
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A). String
B). Undefined
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What is the data type of the value undefined in JavaScript?
A). Number
B). Boolean
C). String
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Which data type represents unique and immutable values in JavaScript introduced in ES6?
A). Symbol
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Which data type represents an intentional absence of any value in JavaScript?
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