Q
Which statement correctly assigns the value true to a boolean variable isLogged in JavaScript?

Answer & Solution

Answer: Option B
Solution:
In JavaScript,
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Which keyword is used to declare a constant variable in JavaScript?

A). const

B). let

C). var

D). constant

What is the purpose of using the === operator in JavaScript?

A). Strict equality comparison

B). Loose equality comparison

C). Assignment operator

D). Addition operator

What is the keyword used to declare variables in JavaScript?

A). let

B). variable

C). var

D). const

Which variable declaration is appropriate if you want a variable to hold a constant value throughout the program execution?

A). let

B). var

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Which symbol is used for string concatenation in JavaScript?

A). +

B). -

C). *

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What is the value of x after the following code executes: let x = 5; x *= 2; x /= 3;?

A). 04-Oct

B). 6666666666667

C). 5

D). undefined

What will be the value of x after the following code executes: let x = '5' + 5;?

A). '55'

B). 10

C). 5

D). '10'

Which method is used to convert a string to a number in JavaScript?

A). toString()

B). parseInt()

C). parseFloat()

D). toNumber()

What will be the output of the following code: console.log(typeof 'Hello');?

A). string

B). number

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D). boolean

What will be the output of the following code: console.log('Hello ' + 'World');?

A). Hello World

B). Hello + World

C). Hello +World

D). HelloWorld