Why Conditional Operator Is Not Working? | JS

Question

When I put numeric value in place of variable, it works!

But when I use variable, it shows error, Why???

https://code.sololearn.com/W29bWk0rcN75/?ref=app

Answer 1

Himanshu Rai put the semi colon after prompt("text) ;

Answer 2

Bagon okk. But can you answer why parentheses causing error?
Or what is the problem these parentheses producing?