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其他参考手册

CSSStyleDeclaration JS 类型转换


JavaScript fround() 方法


实例

将不同的数字舍入为最接近的(32 位单精度)浮点数表示:

var a = Math.fround(2.60);
var b = Math.fround(2.50);
var c = Math.fround(2.49);
var d = Math.fround(-2.60);
var e = Math.fround(-2.50);
var f = Math.fround(-2.49);
亲自试一试 »

定义和用法

fround() 方法返回数的最接近的(32 位单精度)浮点表示。


浏览器支持

方法
fround() 38.0 26.0 12.0 8.0 25.0

语法

Math.fround(x)

参数值

参数 描述
x 必需。数字。

技术细节

返回值: 返回数字的最接近的 32 位单精度浮点表示。
JavaScript 版本: ECMAScript 2015