使用Math.round()方法获取四舍五入到最接近整数的数字的值。
您可以尝试运行以下代码以将数字的值四舍五入为JavaScript中最接近的整数-
<html>
<head>
<title>JavaScript Math round() Method</title>
</head>
<body>
<script>
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>