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Show the sign

importance: 2

Using if..else, write the code which gets a number via prompt and then shows in alert:

  • 1, if the value is greater than zero,
  • -1, if less than zero,
  • 0, if equals zero.

In this task we assume that the input is always a number.

Demo in new window

let value = prompt('Type a number', 0);

if (value > 0) {
  alert( 1 );
} else if (value < 0) {
  alert( -1 );
} else {
  alert( 0 );
}