lifesinger

/**
 * modified from http://gist.github.com/527683
 * only improve slightly to get small
 */
var ie = function(v, p, needle, undef) {

    needle = p.getElementsByTagName('br');

    while(
        p.innerHTML = '<!--[if gt IE ' + (++v) + ']><br><![endif]-->',

bentruyman

/**********************************************/
/*
/* IR_Black Skin by Ben Truyman - 2011
/*
/* Based on Todd Werth's IR_Black:
/* http://blog.toddwerth.com/entries/2
/*
/* Inspired by Darcy Clarke's blog post:
/* http://darcyclarke.me/design/skin-your-chrome-inspector/
/*

sofish

/**
 * @ NAME: Cross-browser TextStorage
 * @ DESC: text storage solution for your pages
 * @ COPY: sofish, http://sofish.de
 */
typeof window.localStorage == 'undefined' && ~function () {

    var localStorage = window.localStorage = {},
        prefix = 'data-userdata',
        doc = document,

coolaj86

Getting Started with NPM (as a developer)

As easy as 1, 2, 3!

Updated:

• Aug, 08, 2022 update config docs for npm 8+
• Jul 27, 2021 add private scopes
• Jul 22, 2021 add dist tags
• Jun 20, 2021 update for --access=public
• Sep 07, 2020 update docs for npm version

jlong

var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

nzakas

• http://tutsplus.com/tutorial/writing-modular-javascript/
• https://github.com/aranm/scalable-javascript-architecture
• https://github.com/patrick99e99/scalable-js-architecture-app
• http://scaleapp.org/
• http://addyosmani.com/largescalejavascript/
• https://github.com/tcorral/Hydra.js/
• http://alanlindsay.me/kerneljs/
• http://terrifically.org/
• https://github.com/gorillatron/cerebral

lifesinger

// ==ClosureCompiler==
// @compilation_level SIMPLE_OPTIMIZATIONS
// ==/ClosureCompiler==

function xx() {
function hello(name) {
  alert('Hello, ' + name);
}
eval('(hello("New user"))')

kejun

;(function($) {
    var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;

    function isDOMAttrModifiedSupported() {
        var p = document.createElement('p');
        var flag = false;

        if (p.addEventListener) p.addEventListener('DOMAttrModified', function() {
            flag = true
        }, false);

paulirish

Learn JavaScript concepts with the Chrome DevTools

Authored by Peter Rybin , Chrome DevTools team

In this short guide we'll review some new Chrome DevTools features for "function scope" and "internal properties" by exploring some base JavaScript language concepts.

Closures

Let's start with closures – one of the most famous things in JS. A closure is a function, that uses variables from outside. See an example: