How to make input in if else statements in Javasript?

Question

input in if else

Answer 1

if (true)
input = prompt()
// else...

alert(input)

Answer 2

var x;
if(...) {
x=prompt(...);
} else {
x=prompt(...);
}

Answer 3

if(predicate) {
true_variant = prompt("Your predicate is true, enter some data", "");
//...
} else {
false_variant = prompt("Your predicate is false, enter some data", "");
//...
}

Answer 4

@donna thanks!!!!!

Answer 5

@Kawaii thanks!!!😊