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Node.js Buffer.alloc() 方法

❮ Buffer 模块


示例

创建一个15字节的缓冲区对象

var buf = Buffer.alloc(15);
console.log(buf);
运行示例 »

定义和用法

Buffer.alloc() 方法创建一个指定大小的新缓冲区对象。


语法

 Buffer.alloc(size, fill, encoding);

参数值

参数 描述
size 必需。指定缓冲区的大小。
fill 可选。如果指定,则指定一个值来填充缓冲区,否则缓冲区将填充 0(零填充)。
encoding 可选。如果缓冲区值是字符串,则此参数指定编码,默认编码为 utf8。支持的值为
"ascii"
"utf8"
"utf16le"
"ucs2"
"base64"
"latin1"
"binary"
"hex"

技术细节

返回值
Node.js 版本 5.10.0

更多示例

示例

使用 fill 参数

var buf = Buffer.alloc(15, 'a');
console.log(buf);
运行示例 »

❮ Buffer 模块

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