Using a variable(global scope) in function named same as parameter of function

Asked Jan 08 '22 at 12:24

Active Jan 08 '22 at 12:32

Viewed 26 times

let x = "Hello"
function greet(x) {
return x(/*variable*/) === x(/*parameter*/) ? 'Hello' : 'Hi'
}

greet('Some text')

The question is simple whether I can use the variable x declared in the function body when the parameter is also named as x? If yes, how?

edited Jan 08 '22 at 12:29

Lajos Arpad

asked Jan 08 '22 at 12:24

Yash Sharma

3

does this help? https://stackoverflow.com/questions/4001414/javascript-access-local-variable-with-same-name-in-inner-and-outer-scope – Nikita Skrebets Jan 08 '22 at 12:29
x is not a function x(/*variable*/) – MWO Jan 08 '22 at 12:29
It’s a principle called shadowing and is a bad idea. Inside the function you lose access to the outer x – Adam Jan 08 '22 at 12:31
@MWO I know x is not a function. I wrote variable in comment to differentiate between the variable x and parameter x. – Yash Sharma Jan 08 '22 at 12:31
@NikitaSkrebets Indeed it did. Thanks – Yash Sharma Jan 08 '22 at 12:34
@Adam I did thought it's a bad practice but was just curious to know if there is something to do in this kind of situation. – Yash Sharma Jan 08 '22 at 12:35
1

In this kind of situation, simply don't write code like this. Since it's all lexically scoped, you're in 100% control of your variable names. – deceze Jan 08 '22 at 12:37

0 Answers0