stats.dev屬性是fs.Stats類的內置應用程序編程接口,用於獲取文件所在設備的數字(數字/bigint)標識。
用法:
stats.dev;
參數:此屬性不接受任何參數。
返回值:它返回一個數字或BigInt值,該值表示文件所在設備的標識。
以下示例說明了Node.js中stats.dev屬性的用法:
範例1:
// Node.js program to demonstrate the
// stats.dev Property
// Accessing fs module
const fs = require('fs');
// Calling fs.Stats stats.dev
// using stat for file
fs.stat('./filename.txt', (err, stats) => {
if (err) throw err;
console.log("using stat:the numeric "
+ "identity of the device is "
+ stats.dev);
});
//using lstat for file
fs.lstat('./filename.txt', (err, stats) => {
if (err) throw err;
console.log("using lstat:the numeric "
+ "identity of the device is "
+ stats.dev);
});
//using stat for directory
fs.stat('./', (err, stats) => {
if (err) throw err;
console.log("using stat:the numeric "
+ "identity of the device is "
+ stats.dev);
});
//using lstat for directory
fs.lstat('./', (err, stats) => {
if (err) throw err;
console.log("using lstat:the numeric "
+ "identity of the device is "
+ stats.dev);
});
輸出:
using stat:the numeric identity of the device is 891323748 using lstat:the numeric identity of the device is 891323748 using stat:the numeric identity of the device is 891323748 using lstat:the numeric identity of the device is 891323748
範例2:
// Node.js program to demonstrate the
// stats.dev Property
// Accessing fs module
const fs = require('fs').promises;
// Calling stats.dev property from
// fs.Stats class
(async () => {
const stats = await fs.stat(
'./fs_stat_dev.txt');
//using stat synchronous
console.log("The numeric identity "
+ "of the device is " + stats.dev);
})().catch(console.error)
輸出:
The numeric identity of the device is 891323748
注意:上麵的程序將通過使用以下命令進行編譯和運行node filename.js
命令並正確使用file_path。
參考: https://nodejs.org/api/fs.html#fs_stats_dev
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注:本文由純淨天空篩選整理自gekcho大神的英文原創作品 Node.js | stats.dev 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。