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HTML DOM

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HTML 对象

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其他参考手册

CSSStyleDeclaration JS 类型转换


Window btoa() 方法

❮ Window 对象

实例

创建一个 base-64 编码的字符串:

var str = "Hello World!";
var enc = window.btoa(str);

var res = "Encoded String: " + enc;
亲自试一试 »

定义和用法

btoa() 方法用于创建一个 base-64 编码的字符串。

该方法使用 "A-Z", "a-z", "0-9", "+", "/" 和 "=" 字符来编码字符串。

提示: base-64 解码使用方法是 atob()


浏览器支持

表中的数字表示支持该方法的第一个浏览器版本。

方法
btoa() Yes 10.0 1.0 Yes Yes

语法

window.btoa(str)

参数值

参数 描述
str 必需。要编码的字符串。

技术细节

返回值: 字符串,表示 base-64 编码的字符串

❮ Window 对象