JavaScript round () method
Examples
round () method to a number rounded to the nearest integer:
Math.round(2.5);
Output:
3
try it"
Definition and Usage
round () method to a number rounded to the nearest integer.
Note: 2.49 rounded 2, 2.5 rounded 3.
Browser Support
All major browsers support round () method
grammar
Math.round( x )
Parameter Value
| 参数 | 描述 |
|---|---|
| x | 必需。必须是数字。 |
return value
| 类型 | 描述 |
|---|---|
| Number | 最接近的整数。 |
technical details
| JavaScript version: | 1.0 |
|---|
More examples
Examples
The different numbers rounded to the nearest integer:
var a=Math.round(2.60);
var b=Math.round(2.50);
var c=Math.round(2.49);
var d=Math.round(-2.60);
var e=Math.round(-2.50);
var f=Math.round(-2.49);
var b=Math.round(2.50);
var c=Math.round(2.49);
var d=Math.round(-2.60);
var e=Math.round(-2.50);
var f=Math.round(-2.49);
a, b, c, d, e, and f output:
3
3
2
-3
-2
-2
3
2
-3
-2
-2
try it"