Answer & Solution
Answer: Option A
Solution:
JavaScript performs type coercion with the == operator, converting true to 1, so true == 1 evaluates to true.
Q
What is the result of the expression true == 1 in JavaScript?
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What happens when you add two numbers using the + operator in JavaScript?
A). The numbers are concatenated
B). The numbers are multiplied
C). The numbers are added
D). An error occurs
What is the result of the expression undefined + null in JavaScript?
A). undefined
B). null
C). 0
D). Error
Which of the following is not a primitive value in JavaScript?
A). Number
B). Boolean
C). Object
D). String
Which of the following is a valid JavaScript symbol?
A). symbol
B). &symbol
C). #symbol
D). Symbol('description')
Which of the following is a primitive data type in JavaScript?
A). Array
B). Object
C). Function
D). String
Which primitive value represents absence of value or no value assigned?
A). undefined
B). null
C). 0
D). 'undefined'
What is the data type of the value NaN in JavaScript?
A). Number
B). String
C). Object
D). Undefined
Which of the following statements is true about primitive data types in JavaScript?
A). They have methods and properties
B). They can be used as keys in objects
C). They are instances of Object
D). They are passed by value
What is the data type of the value undefined in JavaScript?
A). String
B). Object
C). Undefined
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Which of the following is a valid way to represent the value null in JavaScript?
A). undefined
B). NULL
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D). None of the above