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其他参考手册

CSSStyleDeclaration JS 类型转换


JavaScript clz32() 方法


实例

返回不同数字的 32 位二进制表示中前导零的数量:

var a = Math.clz32(0);
var b = Math.clz32(1);
var c = Math.clz32(2);
var d = Math.clz32(4);
亲自试一试 »

定义和用法

clz32() 方法是 CountLeadingZeroes32 的缩写,它返回数的 32 位二进制表示中前导零的数量。


浏览器支持

方法
clz32() 38.0 12.0 31.0 7.0 25.0

语法

Math.clz32(x)

参数值

参数 描述
x 必需。数字。

技术细节

返回值:

数字的 32 位二进制表示中的前导零位数。

如果数字为 0,则此方法返回 32(因为所有位均为 0)。

JavaScript 版本: ECMAScript 2015