Looking for support tables for HTML/CSS/JavaScript features or details on their implementation status in major browsers?
And then there’s Can I use…?.
| String.prototype.format = function() { | |
| var self = this, | |
| formats = self.match(/{(:?\d*)}/g), // an array of formats `{}` found in the string | |
| counter = 0, // A counter to keep track of what index to replace with | |
| args = arguments; // Dereferencing arguments for use in the nested code blocks | |
| if (formats) { | |
| formats.forEach(function(format) { // We loop through each format expression in the array | |
| var namedMatch = format.match(/{:(\d+)}/), // Checking if the format is a named replacement (i.e. {:1}) | |
| reg; |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent| function add() { | |
| var sum = 0; | |
| function add() { | |
| for (var i=0; i<arguments.length; i++) { | |
| sum += Number(arguments[i]); | |
| } | |
| return add; | |
| } | |
| add.valueOf = function valueOf(){ |
| // this is now a module: | |
| // https://github.com/WebReflection/backtick-template#es2015-backticks-for-es3-engines-- | |
| var template = require('backtick-template'); | |
| // just string | |
| const info = 'template'; | |
| `some ${info}` === template('some ${info}', {info}); |
The Ruby on Rails Windows Troubleshooting tips & Survival Guide is a random catalogue of issues I faced working with Ruby on Rails on Windows (Windows 7 specifically). This guide is not exhaustive, but covers many of the challenges that causes Windows Ruby developers to jump ship to Linux or Mac. If you're reading this guide then you're probably new to Ruby/Rails, so also included is more general beginner advice to help you get going.
Before you follow this guide, I strongly recommend you consider using Linux or Mac OS X for Ruby Development instead. Looking to prove a point as a challenge, I ignored this strongly given advice while learning Ruby/Rails. While I eventually did succeed in getting Ruby on Rails to work in Windows, it was not easy, and I easily lost 40+ hours on StackOverFlow to Windows/Ruby configuration issues--time I could have devoted to learning more about th
Attention: the list was moved to
https://github.com/dypsilon/frontend-dev-bookmarks
This page is not maintained anymore, please update your bookmarks.
This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.
Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:
getTweetsFor("domenic", function (err, results) {
// the rest of your code goes here.
| { | |
| "AL": "Alabama", | |
| "AK": "Alaska", | |
| "AS": "American Samoa", | |
| "AZ": "Arizona", | |
| "AR": "Arkansas", | |
| "CA": "California", | |
| "CO": "Colorado", | |
| "CT": "Connecticut", | |
| "DE": "Delaware", |
This list served quite some people but someone else did a better job since.
Go to https://github.com/umpirsky/country-list for a list in your language and format.
I've also compiled a list of nationalities