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Node.js Buffer.from() 方法

❮ Buffer 模块


示例

创建一个包含字母“abc”的新缓冲区

var buf = Buffer.from('abc');

console.log(buf);
运行示例 »

定义和用法

Buffer.from() 方法创建一个新的缓冲区,并用指定的字符串、数组或缓冲区填充它。


语法

Buffer.from(obj, encoding);

参数值

参数 描述
obj 必需。用于填充缓冲区的对象。合法的对象类型
字符串
数组
缓冲区
数组缓冲区
encoding 可选。如果对象是字符串,则此参数用于指定其编码。默认为“utf8”

技术细节

返回值 一个缓冲区对象
Node.js 版本 5.10.0

❮ Buffer 模块

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