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Node.js Buffer.allocUnsafe() 方法

❮ Buffer 模块


示例

创建一个 15 字节的缓冲区对象

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

定义和用法

Buffer.allocUnsafe() 方法创建一个指定大小的新缓冲区对象。

此方法与 Buffer.alloc() 方法的不同之处在于,它创建一个未预先填充的缓冲区,并且可能包含来自旧缓冲区的信息。这就是为什么它被称为不安全

为了防止此缓冲区包含旧数据,您可以使用 Buffer.fill() 方法预先填充缓冲区。


语法

 Buffer.allocUnsafe(size);

参数值

参数 描述
size 必需。指定缓冲区的大小

技术细节

返回值
Node.js 版本 5.10.0

更多示例

示例

清空一个不安全的缓冲区

var buf = Buffer.allocUnsafe(15);
console.log(buf);
//清空缓冲区
buf.fill(0);
console.log(buf);
运行示例 »

❮ Buffer 模块

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