javascript - Microsoft JScript runtime error : Code : 800A1391 'console' is undefined while running node.js program

Question

I am new to node.js. I have created a file named myFirst.js after installing node.js in Windows machine. The file looks like following :

console.log("Sweet .. Welcome to Node.js"); 

But when I try to navigate to that directory and execute the file it throws an error like the following :

Even a command like

is not working. What am I missing ? How would I execute my first node.js code block ?

Answer 1

HALAR's helpful answer:

• explains that *.js file are by default executed by Microsoft's obsolescent WSH (Windows Script Host) JavaScript engine (JScript) rather than Node.js,

• and that passing a Node.js *.js script directly to the node.exe executable ensures its proper execution.

Alternatively, you can reconfigure file-extension associations so as to make *.js files execute with the Node.js engine by default:

• Open a PowerShell console window.

• Execute the following, which changes the association of the .js extension in the Windows registry (which takes effect for the current user account only, but, conversely, doesn't require elevation):

New-Item -Force HKCU:SOFTWAREClassesNodeJSFileshellOpenCommand -Value "`"$((Get-Command node.exe).Source)`" `"%1`" %*"
New-Item -Force HKCU:SOFTWAREClasses.js -Value 'NodeJSFile'

From that point on, invoking *.js files directly will execute them with Node.js (node.exe).

Note, however, that you'll have to do this on every machine that you want to behave this way.