JavaScript CEIL

The JavaScript CEIL function is a Math function used to return the smallest integer value, which is greater than or equal to the specified expression or a specific number. The syntax of the JavaScript CEIL Function is

  • If the number argument is a positive or negative number, the ceil function will return the ceiling value.
  • If the specified number argument is not a number, the JS ceil function will return NaN.
  • And if it is Null, ceil function returns Zero.

JavaScript CEIL Function Example

In this JS CEIL Function example, We are going to use this ceil function to find the ceiling values of different data types and display the output

<!DOCTYPE html>
    <title> JavaScript CEIL Function </title>
  <h1> JavaScript CEIL 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>
    document.getElementById("Pos").innerHTML = Math.ceil(20);
    document.getElementById("Neg").innerHTML = Math.ceil(-20);
    document.getElementById("Dec").innerHTML = Math.ceil(10.05);
    document.getElementById("Dec1").innerHTML = Math.ceil(10.95);
    document.getElementById("Neg_Dec").innerHTML = Math.ceil(-6.05);
    document.getElementById("Neg_Dec1").innerHTML = Math.ceil(-6.95);
    document.getElementById("Str").innerHTML = Math.ceil("JavaScript");
    document.getElementById("Null").innerHTML = Math.ceil(null);
JavaScript CEIL Function


  1. Within the first two statements, We used the CEIL Function directly on both the Positive integer and negative integer.
  2. Following four statements, We used the JavaScript CEIL Function on both the Positive and negative Decimal values.
  3. Next, we tried the CEIL Function on the String value. As we said before, this will return NaN as output
  4. Last, we tried CEIL Math function on Null value, and it returns Zero as output