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JavaScript SIGN

23-11-2015 by suresh Leave a Comment

The JavaScript SIGN function is one of the JavaScript Math function which is used to find the Sign of a given expression. For example Positive, Negative or Zero. In this article we will show you, How to use SIGN() function in JavaScript Programming language with example.

Syntax of a JavaScript SIGN Function

The basic syntax of the SIGN Function in JavaScript Programming language is as shown below:

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Math.sign(number);

Number: It can be a number or a valid numerical expression.

  • If the number argument is positive or negative Zero, SIGN() function will return Zero as output.
  • If the number argument is Negative Number, SIGN() function will return Negative One as output.
  • If the number argument is positive Number, SIGN() function will return Positive One as output.
  • If the number argument is not a number, SIGN() function will return NaN.
  • If the number argument is Null, SIGN() function will convert the Null value to Zero.

JavaScript SIGN Function Example

The JavaScript SIGN Function is used to find the Sign of a given expression. In this example, We are going to check the same with different data types and display the output

JAVASCRIPT CODE

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<!DOCTYPE html>
<html>
<head>
    <title> JavaScript SIGN() Function </title>
</head>
<body>
  <h1> JavaScript SIGN Function </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>

OUTPUT

JavaScript SIGN Function

ANALYSIS

  • First, We used the SIGN() Function with both the Positive and negative Zeros.
  • Next, We used the SIGN() Function with both the Positive integer and negative values as arguments.
  • Next, We tried SIGN() Function with String argument. As we said before, this will return NaN (Not a Number) as output
  • Next, We tried SIGN() Function with Null argument and it return Zero.
  • In the Last statement, We used the SIGN() Function with multiple values.

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