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Which of the following is the correct way to declare a constant variable in JavaScript?
- a)const x = 5;
- b)let x = 5;
- c)var x = 5;
- d)const x;
Correct answer is option 'A'. Can you explain this answer?
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Which of the following is the correct way to declare a constant variab...
The "const" keyword is used to declare a constant variable in JavaScript.
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Declaring a Constant Variable in JavaScript
To declare a constant variable in JavaScript, you should use the keyword "const" followed by the variable name and its value. This ensures that the variable cannot be reassigned a new value in the program.
Here is the correct way to declare a constant variable in JavaScript:
Option A: const x = 5;
- const: This keyword is used to declare a constant variable.
- x: This is the variable name.
- 5: This is the initial value assigned to the variable.
By using "const" in the declaration, you are indicating that the variable "x" is a constant and should not be changed throughout the program. This helps in maintaining the immutability of the variable and prevents accidental reassignment.
It is important to use constants for values that should not change during the execution of the program. This practice improves code readability, reduces errors, and makes the code more predictable and maintainable.
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Which of the following is the correct way to declare a constant variable in JavaScript?a)const x = 5;b)let x = 5;c)var x = 5;d)const x;Correct answer is option 'A'. Can you explain this answer?
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