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What will be the output of the following JavaScript code?
var x = 5;
var x = 5;
function updateX() {
x = 10;
}
x = 10;
}
updateX();
console.log(x);
console.log(x);
- a)5
- b)10
- c)Undefined
- d)This code will produce an error
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
What will be the output of the following JavaScript code?var x = 5;fun...
The code declares a global variable "x" with the value 5. The function "updateX" modifies the global variable "x" by assigning it the value 10. Calling "updateX()" updates the value of the global "x". Therefore, the output is 10.
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Community Answer
What will be the output of the following JavaScript code?var x = 5;fun...
Explanation:
Variable Declaration:
- The code declares a variable x and assigns it a value of 5.
Function Declaration:
- A function named updateX is declared which sets the value of x to 10.
Function Call:
- The updateX function is called.
Console Output:
- Finally, the value of x is logged to the console using console.log(x).
Output:
- The output of this code will be 10 because the updateX function is called which updates the value of x to 10.
Therefore, the correct answer is 10.
Variable Declaration:
- The code declares a variable x and assigns it a value of 5.
Function Declaration:
- A function named updateX is declared which sets the value of x to 10.
Function Call:
- The updateX function is called.
Console Output:
- Finally, the value of x is logged to the console using console.log(x).
Output:
- The output of this code will be 10 because the updateX function is called which updates the value of x to 10.
Therefore, the correct answer is 10.
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