Node.js Buffer.length 属性
原文:https://www . geesforgeks . org/node-js-buffer-length-property/
Buffer.length 属性是缓冲模块中类 Buffer 的内置应用编程接口，用于获取该缓冲对象的长度。
语法:
const Buffer.length
参数:该属性不接受任何参数。
返回值:该属性返回该缓冲区对象的长度。
示例 1: 文件名:index.js
java 描述语言
// Node.js program to demonstrate the
// Buffer.length property
// Creating and initializing arraybuffer object
const arrbuff = new ArrayBuffer(16);
// Getting buffer object form existing
// arraybuffer object
const buffer = Buffer.from(arrbuff);
// Getting byteoffset of buffer
// by using byoffset api
const length = buffer.length;
// Display the result
console.log("Length is : " + length);
输出:
Length is : 16
示例 2: 文件名:index . js
Javascript
// Node.js program to demonstrate the
// Buffer.length property
// Creating and initializing arraybuffer object
const arrbuff = new ArrayBuffer(16);
// Getting buffer object form existing
// arraybuffer object
const buffer = Buffer.from(arrbuff);
// Getting byteoffset of buffer
// by using byoffset api
const length = buffer.length;
// Creating and initializing Int8Array object
const buff = new Int8Array(buffer, buffer.byteoffset, length);
// Display the result
console.log("Int8Arry object :- " + buff);
输出:
Int8Arry object :- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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 _ buf _ length
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