JS Codings Standards

Here are some JavaScript coding standards/conventions I've been thinking about lately. I put this together pretty quickly, so it may contain some errors. What you think about these? Are there other conventions you support? Please post your feedback and/or corrections and suggestions!

	////////////
	// jQuery //
	////////////
	// 1. Name jQuery objects so that we know what they are
	var $container = $("div");
	///////////////
	// Normal JS //
	///////////////
	// 1. 1 var per function
	// 2. function not too long
	// 3. define the length once, it's optimized
	// 4. initalize vars with relevant type?
	// 5. for loop over foreach. it's faster and better supported. don't care on server-side
	// 6. Var stuff is all indented
	// 7. Function declarations better than function expressions because of hoisting
	// 8. Variables that don't get initialized (just declared) usually hang out at the bottom of the var call.
	// 9. Semi-colons make it easier for me to read the flow
	// 10. So does consistent tabbing
	function bla(someArray) {
	var hi = "",
	k = [],
	len = someArray.length;
	i = 0,
	k;
	for (i = 0; i < len; i++) {
	doSomethingWithI(i);
	}
	}
	function doSomethingWithI(i) {
	var x = 2;
	return x * i;
	}
	/////////////////
	// Server-side //
	/////////////////
	// 1. Take advantage of native-stuff wherever possible
	// 2. console.log is easier than most things and takes multiple args
	// 3. Don't leave in extra requires statements
	Date.now(); // faster than new Date().getTime()
	Array.isArray(); // better than underscore
	Object.keys(); // returns the keys, yep
	var arr = [1,2,3];
	arr.forEach(function(val) {
	console.log("Val", val);
	});
	////////////////
	// Good Links //
	////////////////
	// 1. http://kangax.github.com/es5-compat-table/
	// 2. https://developer.mozilla.org/en/JavaScript/Reference/

view raw standards.js hosted with ❤ by GitHub