The JavaScript Ninja

Here on Twitter I will sporadically divulge sensitive information regarding JavaScript and its various abstractions...

[Chris Coyier @chriscoyier]

Did you watch @paul_irish live-fix some performance issues on a site with janky scrolling yet? http://t.co/oJbDSEdRNE

[The JavaScript Ninja @jsninja]

JS Promises are the ones you don't make to yourself.

[The JavaScript Ninja @jsninja]

Learn JavaScript by programming a warrior http://t.co/F3J3gLmR4C

[The JavaScript Ninja @jsninja]

Know thy self, know thy enemy (@uglyjs). A thousand battles, a thousand victories.

[The JavaScript Ninja @jsninja]

jsPlumb, for Yahoo Pipes style plumbing - http://t.co/HYzdess

[The JavaScript Ninja @jsninja]

for (var i = -1, l = array.length; ++i < l;) // Yet another array looping 'pattern' (not original)

[The JavaScript Ninja @jsninja]

poll - "What identifier do you tend to use to reference out-of-scope contexts in your JavaScript code?" - http://t.co/D3DmOTN

[The JavaScript Ninja @jsninja]

Random value from array: ['which', 'word', 'i', 'wonder', '...?'][0|Math.random()*5]

[The JavaScript Ninja @jsninja]

~~n and n|n are the clear winners in the flooring benchmarks: http://ernestdelgado.com/archive/benchmark-on-the-floor/ (via @paul_irish)

[The JavaScript Ninja @jsninja]

Technically, you could use labelled compound statements ("blocks") to annotate pieces of code: http://bit.ly/an5l1U

[The JavaScript Ninja @jsninja]

http://www.spritely.net/ - Useful for CSS sprite animation

[The JavaScript Ninja @jsninja]

Answering Baranovskiy’s JavaScript quiz - http://www.nczonline.net/blog/2010/01/26/answering-baranovskiys-javascript-quiz/

[The JavaScript Ninja @jsninja]

Understanding Delete - http://perfectionkills.com/understanding-delete/

[The JavaScript Ninja @jsninja]

Instead of (new Date()).getTime() ... You can just do +new Date

[The JavaScript Ninja @jsninja]

Optimise your Waterfall! http://www.phpied.com/free-falling-waterfalls/

[The JavaScript Ninja @jsninja]

Degradation of skills as a result of JS libraries - http://bit.ly/7Kpnmy

[The JavaScript Ninja @jsninja]

Want a free copy of the new jQuery cookbook (O'Reilly)? http://james.padolsey.com/javascript/the-jquery-cookbook/

[The JavaScript Ninja @jsninja]

Quick indexOf failure trick: !~string.indexOf(something) .... No need for ==-1

[The JavaScript Ninja @jsninja]

And, obviously, the other comparison operators work in a similar fashion. "a" <= "b" && "c" > "a"

[The JavaScript Ninja @jsninja]

"alpha" < "bravo" ... You can use the less-than operator on strings! (helps with lexicographical ordering)