Use command line arguments in Node.js

本文介绍了一个简单的Node.js程序,该程序展示了如何从命令行读取参数并打印出来。通过使用`process.argv.splice(2)`来获取命令行输入的参数,并遍历这些参数将它们打印到控制台。

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var args = process.argv.splice(2);
if(!args || args.length ==0){
	console.log("no params");
}

for(var i=0;i<args.length;i++)
	console.log(args[i]);


commandline:
node test1.js a b c d
output: a
b
c
d
error D:\project\eam-web\node_modules\deasync: Command failed. Exit code: 1 Command: node ./build.js Arguments: Directory: D:\project\eam-web\node_modules\deasync Output: D:\project\eam-web\node_modules\deasync>if not defined npm_config_node_gyp (node "C:\nvm4w\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild ) else (node "" rebuild ) gyp info it worked if it ends with ok gyp info using node-gyp@9.1.0 gyp info using node@16.20.2 | win32 | x64 gyp info find Python using Python version 3.8.0 found at "D:\Programs\Python\Python38\python.exe" gyp ERR! find VS gyp ERR! find VS msvs_version not set from command line or npm config gyp ERR! find VS VCINSTALLDIR not set, not running in VS Command Prompt gyp ERR! find VS could not use PowerShell to find Visual Studio 2017 or newer, try re-running with '--loglevel silly' for more details gyp ERR! find VS looking for Visual Studio 2015 gyp ERR! find VS - not found gyp ERR! find VS not looking for VS2013 as it is only supported up to Node.js 8 gyp ERR! find VS gyp ERR! find VS ************************************************************** gyp ERR! find VS You need to install the latest version of Visual Studio gyp ERR! find VS including the "Desktop development with C++" workload. gyp ERR! find VS For more information consult the documentation at: gyp ERR! find VS https://github.com/nodejs/node-gyp#on-windows gyp ERR! find VS ************************************************************** gyp ERR! find VS gyp ERR! configure error gyp ERR! stack Error: Could not find any Visual Studio installation to use gyp ERR! stack at VisualStudioFinder.fail (C:\Users\GIENTECH\AppData\Local\nvm\v16.20.2\node_modules\npm\node_modules\node-gyp\lib\find-visualstudio.js:122:47) gyp ERR! stack at C:\Users\GIENTECH\AppData\Local\nvm\v16.20.2\node_modules\npm\node_modules\node-gyp\lib\find-visualstudio.js:75:16 gyp ERR! stack at VisualStudioFinder.findVisualStudio2013 (C:\Users\GIENTECH\AppDa
最新发布
03-27
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