Javascript Training 2026 - Revision history

Iwiseman: /* Anonymous Functions */

2026-05-24T23:20:00Z

Anonymous Functions

← Older revision		Revision as of 23:20, 24 May 2026
Line 61:		Line 61:

	console.log(b);		console.log(b);
			</syntaxhighlight>
			So this works.
			<syntaxhighlight lang="js">
			console.log(function (x, y) { return x + y }(3, 4));
	</syntaxhighlight>		</syntaxhighlight>

Iwiseman: /* arguments */

2026-05-24T23:18:08Z

arguments

← Older revision		Revision as of 23:18, 24 May 2026
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	</syntaxhighlight>		</syntaxhighlight>
	Well turns out arguments is a keyword in js and it prints [8, 7, 6, 5, 4]		Well turns out arguments is a keyword in js and it prints [8, 7, 6, 5, 4]
			=Anonymous Functions=
			Never really got this until today. Knew what it did but just accepted it worked
			<syntaxhighlight lang="js">
			console.log((function (x, y) { return x + y })(3, 4));
			</syntaxhighlight>
			Looks easier to read like this
			<syntaxhighlight lang="js">
			a = function (x, y) { return x + y }
			b = (a)(3, 4)

			console.log(b);
			</syntaxhighlight>
			In fact u can lose the brackets around a
			<syntaxhighlight lang="js">
			a = function (x, y) { return x + y }
			b = a(3, 4)

			console.log(b);
			</syntaxhighlight>

Iwiseman at 22:22, 24 May 2026

2026-05-24T22:22:09Z

← Older revision		Revision as of 22:22, 24 May 2026
Line 26:		Line 26:
	console.log(fun.speak());		console.log(fun.speak());
	</syntaxhighlight>		</syntaxhighlight>
			=arguments=
			Well this was a stunner. First what does this return
			<syntaxhighlight lang="js">
			function add(x, y) {
			return(x + y);
			}
			console.log(add(1, 2, 3, 4, 10, 20));
			</syntaxhighlight>
			It ignores the extra arguments and print 3
			<syntaxhighlight lang="js">

			function args () {
			return arguments;
			}
			console.log(args(8, 7, 6, 5, 4));
			</syntaxhighlight>
			Well turns out arguments is a keyword in js and it prints [8, 7, 6, 5, 4]

Iwiseman: /* Node */

2026-05-24T21:21:20Z

Node

← Older revision		Revision as of 21:21, 24 May 2026
Line 11:		Line 11:
	"main" : "./stimpy.js"		"main" : "./stimpy.js"
	}		}
	<syntaxhighlight>		</syntaxhighlight>
	You put your file stimpy.js in the same directory		You put your file stimpy.js in the same directory
	<syntaxhighlight lang="js">		<syntaxhighlight lang="js">
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	}		}
	};		};
	<syntaxhighlight>		</syntaxhighlight>
	So in your main you can import the folder		So in your main you can import the folder
	<syntaxhighlight lang="js">		<syntaxhighlight lang="js">
Line 25:		Line 25:

	console.log(fun.speak());		console.log(fun.speak());
	<syntaxhighlight>		</syntaxhighlight>

Iwiseman: Created page with "=Introduction= Never thought I would be doing this. Love typescript and this will be a challenge but doing more with less is fun too. So on here will be the bits I never knew about JS =Node= commonJS '''module.exports''' = '''require'''. And although import works for a function, it does not work for a class so you have to use it
ESM '''export''' = '''import'''

So never made a package outside of using npm so this was a surprise. Make a folder fun_m and add p..."

2026-05-24T21:20:51Z

Created page with "=Introduction= Never thought I would be doing this. Love typescript and this will be a challenge but doing more with less is fun too. So on here will be the bits I never knew about JS =Node= commonJS '''module.exports''' = '''require'''. And although import works for a function, it does not work for a class so you have to use it ESM '''export''' = '''import''' So never made a package outside of using npm so this was a surprise. Make a folder fun_m and add p..."

New page

=Introduction=
Never thought I would be doing this. Love typescript and this will be a challenge but doing more with less is fun too. So on here will be the bits I never knew about JS
=Node=
commonJS '''module.exports''' = '''require'''. And although import works for a function, it does not work for a class so you have to use it 
ESM '''export''' = '''import''' 
 
So never made a package outside of using npm so this was a surprise. Make a folder fun_m and add package.json
<syntaxhighlight lang="json">
{
"name" : "myModule",
"main" : "./stimpy.js"
}
<syntaxhighlight>
You put your file stimpy.js in the same directory
<syntaxhighlight lang="js">
module.exports = {
speak: function() {
return "happy, happy, joy, joy";
}
};
<syntaxhighlight>
So in your main you can import the folder
<syntaxhighlight lang="js">
const fun = require('./fun_m');

console.log(fun.speak());
<syntaxhighlight>