The Math.ceil() function in JavaScript is used to round the number passed as a parameter to its nearest integer in an Upward direction of rounding i.e towards the greater value.
Syntax :
Math.ceil(value)
Parameters: This function accepts a single parameter as the number to be rounded to its nearest integer in the upward rounding method.
Returns: Result after rounding the number passed as a parameter to the function.
Examples:
Input : Math.ceil(4.23) Output : 5 Input : Math.ceil(0.8) Output : 1
Errors and Exceptions:
- A non-numeric string passed as parameter returns NaN
- An array with more than 1 integer passed as parameter returns NaN
- An empty variable passed as parameter returns NaN
- An empty string passed as parameter returns NaN
- An empty array passed as parameter returns NaN
Below are some examples that illustrate the Math.ceil() function in JavaScript:
Example: 1
Javascript
<!-- NEGATIVE NUMBER EXAMPLE --> <script type="text/javascript"> console.log(Math.ceil(-2) + "<br>"); console.log(Math.ceil(-2.56)); </script> |
Output:
-2 -2
Example:2
Javascript
<!-- POSITIVE NUMBER EXAMPLE --> <script type="text/javascript"> console.log(Math.ceil(2) + "<br>"); console.log(Math.ceil(2.56)); </script> |
Output:
2 3
Example :3
Javascript
<!-- STRING EXAMPLE --> <script type="text/javascript"> console.log(Math.ceil("Geeksforneveropen")); </script> |
Output:
NaN
Example:4
Javascript
<!-- ADDITION INSIDE FUNCTION EXAMPLE --> <script type="text/javascript"> console.log(Math.ceil(7+9)); </script> |
Output:
16
Supported Browsers: The browsers supported by JavaScript Math.ceil( ) function are listed below:
- Google Chrome 1 and above
- Internet Explorer 12 and above
- Firefox 1 and above
- Opera 3 and above
- Safari 1 and above
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