Math.ceil 方法实例

<script language="JavaScript">

document.write( Math.ceil(0.35) + "<br />" );
document.write( Math.ceil(10) + "<br />" );
document.write( Math.ceil(-10) + "<br />" );
document.write( Math.ceil(-10.1) );

</script>

运行该例子，输出：

1
10
-10
-10