Node.js Buffer.kMaxLength 属性
原文:https://www . geesforgeks . org/node-js-buffer-kmaxlength-property/
Buffer.kMaxLength 属性是缓冲模块内类 Buffer 的内置应用编程接口，用于设置和获取单个缓冲实例允许的最大长度。
语法:
const Buffer.kMaxLength
参数:这个属性作为一个 getter 和 setter 工作，所以它有时会将整数值作为一个参数。
返回值:该属性返回单个缓冲实例允许的最大长度。
示例 1: 文件名:index.js
java 描述语言
// Node.js program to demonstrate the
// Buffer.kMaxLength property
// Creating and initializing arraybuffer object
const arrbuff = new ArrayBuffer(16);
// Getting buffer object form existing
// arraybuffer object
const buffer = Buffer.from(arrbuff);
// Setting the the maximum value
// into the buffer
buffer.kMaxLength = 23;
// Getting the maximum length by using
// kMaxLength property
const value = buffer.kMaxLength;
// Display the result
console.log("kMaxLength is: " + value);
输出:
kMaxLength is: 23
示例 2: 文件名:index.js
如果 kMaxLength 未初始化
Javascript
// Node.js program to demonstrate the
// Buffer.kMaxLength property
// If kMaxLengthis is not initialized
// Creating and initializing arraybuffer
// object
const arrbuff = new ArrayBuffer(16);
// Getting buffer object form existing
// arraybuffer object
const buffer = Buffer.from(arrbuff);
// Getting the maximum length by using
// kMaxLength property
const value = buffer.kMaxLength;
// Display the result
console.log("kMaxLength is: " + value);
输出:
kMaxLength is: undefined
使用以下命令运行 index.js 文件:
node index.js
参考:https://nodejs . org/dist/latest-v 12 . x/docs/API/buffer . html # buffer _ buffer _ kmaxlength
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