Home > Developer > JavaScript
Explain the Math. round () method used for rounding in JavaScript
This article mainly introduces the Math. round () method used for rounding in JavaScript. It is the basic knowledge in JS learning. For more information, see
This method returns the value rounded to the nearest integer.
Syntax
?
| 1 |
Math. round (x ); |
The following is the detailed information about the parameters:
X: a number
Return Value:
Returns the value rounded to the nearest integer.
Example:
?
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 |
<Html> <Head> <Title> JavaScript Math round () Method </title> </Head> <Body> <Script type = "text/javascript">
Var value = Math. round (0.5 ); Document. write ("First Test Value:" + value );
Var value = Math. round (20.7 ); Document. write ("<br/> Second Test Value:" + value );
Var value = Math. round (20.3 ); Document. write ("<br/> Third Test Value:" + value );
Var value = Math. round (-20.3 ); Document. write ("<br/> Fourth Test Value:" + value ); </Script> </Body> </Html> |
This produces the following results:
?
| 1 2 3 4 |
First Test Value: 1 Second Test Value: 21 Third Test Value: 20 Fourth Test Value:-20 |
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
