Buffer.kMaxLength屬性是緩衝區模塊中Buffer類的內置應用程序編程接口,用於設置和獲取單個緩衝區實例允許的最大長度。
用法:
const Buffer.kMaxLength
參數:此屬性可以用作獲取器和設置器,因此有時會使用整數值作為參數。
返回值:此屬性返回單個緩衝區實例允許的最大長度。
範例1: 文件名:index.js
Javascript
// 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;
// Disply the result
console.log("kMaxLength is:" + value);
輸出:
kMaxLength is:23
範例2: 文件名:index.js
如果未初始化kMaxLength
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;
// Disply the result
console.log("kMaxLength is:" + value);
輸出:
kMaxLengthis is:undefined
使用以下命令運行index.js文件:
node index.js
參考:https://nodejs.org/dist/latest-v12.x/docs/api/buffer.html#buffer_buffer_kmaxlength
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注:本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Node.js Buffer.kMaxLength Property。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。