JavaScript SIGN Function

JavaScript sign

The JavaScript sign function is one of the Math functions which will find the Sign of a given expression. It returns the result as Positive, Negative, or Zero. The basic syntax of the sign Function is:

Math.sign(number);
  • If the number argument is positive or negative zero, the sign function will return Zero as output.
  • If it is a Negative Number, it returns a Negative One as output.
  • When a number argument is a positive number, it will return Positive One as output.
  • If it is not a number, the function will return NaN.
  • If it is Null, it will convert the Null value to Zero.

JavaScript sign Function Example

In this example, we will find the Sign of a given expression with different data types and display the output.

  • First, We used both the Positive and negative Zeros.
  • Next, We used both the positive and negative values as the JavaScript function arguments.
  • Next, We tried with a String argument. As we said before, this will return NaN (Not a Number) as output.
  • Next, We tried the Math function with a Null argument, which returns zero.
  • In the last statement, We used it with multiple values.
<!DOCTYPE html>
<html>
<head>
    <title> JavaScriptSIGNFunction </title>
</head>
<body>
  <h1> JavaScriptSIGNFunction </h1>
  <p id = "Pos"></p>
  <p id = "Neg"></p>
  <p id = "Dec"></p>
  <p id = "Neg_Dec"></p>
  <p id = "Str"></p>
  <p id = "Exp"></p>
  <p id = "Null"></p>
  <p id = "Multi"></p>
  <script>
    document.getElementById("Pos").innerHTML = Math.sign(0);
    document.getElementById("Neg").innerHTML = Math.sign(-0);
    document.getElementById("Dec").innerHTML = Math.sign(10.45);
    document.getElementById("Neg_Dec").innerHTML = Math.sign(-6.45);
    document.getElementById("Str").innerHTML = Math.sign("JavaScript");
    document.getElementById("Null").innerHTML = Math.sign(null);
    document.getElementById("Multi").innerHTML = Math.sign(2 + 5 - 5);
  </script>
</body>
</html>
JavaScript SIGN Function