JavaScript ceil() Method: Math Object

Last update on May 28 2022 10:28:52 (UTC/GMT +8 hours)

Description

The ceil() method of math object is used to get the smallest integer, greater than or equal to a number.

Version

Implemented in JavaScript 1.0

Syntax

ceil(x)

Parameter

x: A number.

Example:

The following web document demonstrates how the ceil() method can be used.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title>JavaScript Math object - ceil() method example</title>
</head>
<body>
<h1 style="color: red">JavaScript Math object : ceil() method</h1>
<hr />
<script type="text/javascript">
document.write(Math.ceil(0.75) + "<br />");
document.write(Math.ceil(0.22) + "<br />");
document.write(Math.ceil(1.25) + "<br />");
document.write(Math.ceil(5) + "<br />");
document.write(Math.ceil(22.1) + "<br />");
document.write(Math.ceil(-33.2) + "<br />");
document.write(Math.ceil(-8.9));
</script>
</body>
</html>

View the example in the browser

Supported Browser

Internet Explorer 7	Firefox 3.6	Google Chrome 7	Safari 5.0.1	Opera 10
Yes	Yes	Yes	Yes	Yes

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04