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JavaScript Round

by suresh

The JavaScript Round function is a Math function used to round the specified expression or an individual number to the nearest integer. The syntax of the round function in JavaScript Programming language is

Math.round(number);
  • If the number argument is a positive or negative number, the round function will return the nearest value.
  • If it is not a number, the JavaScript round function will return NaN.
  • And, if the number argument is Null, the JS round function will return Zero.

JavaScript Round Number Example

In this JS Round function example, we are going to round the values of different data types and display the output

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript ROUND Function </title>
</head>
<body>
  <h1> JavaScript ROUND Function </h1>
  <p id = "Pos"></p>
  <p id = "Neg"></p>
  <p id = "Dec"></p>
  <p id = "Dec1"></p>
  <p id = "Neg_Dec"></p>
  <p id = "Neg_Dec1"></p>
  <p id = "Str"></p>
  <p id = "Exp"></p>
  <p id = "Null"></p>
  <script>
    document.getElementById("Pos").innerHTML = Math.round(10);
    document.getElementById("Neg").innerHTML = Math.round(-10);
    document.getElementById("Dec").innerHTML = Math.round(14.05);
    document.getElementById("Dec1").innerHTML = Math.round(14.95);
    document.getElementById("Neg_Dec").innerHTML = Math.round(-6.05);
    document.getElementById("Neg_Dec1").innerHTML = Math.round(-6.95);
    document.getElementById("Str").innerHTML = Math.round("JavaScript");
    document.getElementById("Null").innerHTML = Math.round(null);
  </script>
</body>
</html>

ANALYSIS

  1. First two statements, we used the JavaScript Function on the Positive and negative integer.
  2. Fo the next four statements, we used the Round Function on the Positive and negative Decimal values.
  3. Next, we tried the JS Round Function on the string value. It will return NaN as output
  4. Last, We tried Round Math function on Null value, and it returns Zero
JavaScript ROUND Function

Placed Under: JavaScript

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