node.js process.versions用法及代碼示例

process.versions屬性是流程模塊的內置應用程序編程接口，用於獲取node.js模塊的版本及其依賴項。

用法:

process.versions

返回值：此屬性返回一個對象，其中包含node.js模塊的版本及其依賴項。

以下示例說明了Node.js中process.versions屬性的用法：

範例1：

// Node.js program to demonstrate the     
// process.versions property 
  
// Include process module 
const process = require('process'); 
  
// Printing process.versions property value 
console.log(process.versions);

輸出：

{ http_parser:'2.8.0',
  node:'10.16.0',
  v8:'6.8.275.32-node.52',
  uv:'1.28.0',
  zlib:'1.2.11',
  brotli:'1.0.7',
  ares:'1.15.0',
  modules:'64',
  nghttp2:'1.34.0',
  napi:'4',
  openssl:'1.1.1b',
  icu:'64.2',
  unicode:'12.1',
  cldr:'35.1',
  tz:'2019a' }

範例2：

// Node.js program to demonstrate the     
// process.versions property 
  
// Include process module 
const process = require('process'); 
  
// Printing process.versions property value 
// and variable count 
var no_versions = 0; 
  
// Calling process.versions property 
var versions = process.versions; 
  
// Itterating through all returned data 
for (var key in versions) { 
      
  // Printing key and its versions 
  console.log(key + ":\t\t\t" + versions[key]); 
  no_versions++; 
} 
  
// Printing count value 
console.log("Total no of values available = " + no_versions);

輸出：

http_parser:           2.8.0
node:                  10.16.0
v8:                    6.8.275.32-node.52
uv:                    1.28.0
zlib:                  1.2.11
brotli:                1.0.7
ares:                  1.15.0
modules:               64
nghttp2:               1.34.0
napi:                  4
openssl:               1.1.1b
icu:                   64.2
unicode:               12.1
cldr:                  35.1
tz:                    2019a
Total no of values available = 15

範例3：

// Node.js program to demonstrate the     
// process.versions property 
  
// Include process module 
const process = require('process'); 
  
// Calling process.versions property 
var versions = process.versions; 
  
// Printing one at a time 
console.log("node version:" + versions.node); 
console.log("openssl version:" + versions.openssl); 
console.log("module versions:" + versions.modules);

輸出：

node version:10.16.0
openssl version:1.1.1b
module versions:64

注意：上麵的程序將通過使用node filename.js命令。

參考： https://nodejs.org/api/process.html#process_process_versions

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注：本文由純淨天空篩選整理自anwesha0107大神的英文原創作品 Node.js | process.versions 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。