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JavaScript is a language we love despite it giving us so much to hate. This is a collection of those very special irregularities, inconstancies and just pain unintuitive moments for the language of the web.

Try to answer what will be alerted in each case without running them in the console.

Reflection.js works well with logos, icons and dynamic image content such as forum avatars. Reflection.js comes into it's own with forum avatars; you can apply a reflection effect to every avatar on your forum or blog without any additional server work.

moo.fx is a superlightweight, ultratiny, megasmall javascript effects library, to be used with prototype.js or the mootools framework. It's very easy to use, blazing fast, cross-browser, standards compliant, provides controls to modify any CSS property of any HTML element, including colors, with builtin checks that won't let a user break the effect with multiple, crazy clicks. Optimized to make you write the lesser code possible, the new moo.fx is so modular you can create any kind of effect with it. moo.fx is open source, released under the very liberal MIT License, so feel free to do anything you want with

The Closure Compiler is a tool for making JavaScript download and run faster. It is a true compiler for JavaScript. Instead of compiling from a source language to machine code, it compiles from JavaScript to better JavaScript. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls.

This beautifier can process your messy or compacted javascript, making it all neatly and consistently formatted and readable. You can always see the latest version of the code in github, and you can download the beautifier for local use (zip, tar.gz) as well.

This script works in Internet Explorer, Firefox, Chrome, Opera and Safari.

This has been tested with Firefox 3.5.5, IE 8 (8.0.6001.18702), Google Chrome 3.0.195.33, and Safari (Win) 4.0.4 (531.21.10). For web spiders, no content is hidden from them so it matters not whether they support Flash or JavaScript.

just edit the html on the left pane, and you'll see how it rendered on the right pane as you typed.\nIt should be useful when you want to develop such as CSS or JavaScript which need to be tuned litlle by little.\nNote that the html document is automatically stored into a browser's cookie(up to approx.4kb).\nSo you can continue working on the html even after you closed the browser window.

Build-time error reporting, refactoring and code completion in Visual Studio Extended JavaScript syntax power with C# language features Pure client-side control library coded in C#

A pure-JavaScript CSS selector engine designed to be easily dropped in to a host library. Sizzle supports virtually all CSS 3 Selectors - this even includes some parts that are infrequently implemented such as escaped selectors (".foo\\+bar"), Unicode selectors, and results returned in document order. There are a few notable exceptions to the CSS 3 selector support (the reasoning for this decision can be found here): * :root * :target * :nth-last-child * :nth-of-type / :nth-last-of-type / :first-of-type / :last-of-type / :only-of-type * :lang() In addition to the CSS 3 Selectors Sizzle supports the following additional selectors or conventions.

MooShell is a shell editor where you can write your JavaScript, HTML and CSS code and run it. It might prove to be useful in various cases where you need to test your code without reloading your browser.

JavaScript Beautifier formats JavaScript source code to make it easier to read and understand.

specifically designed to help JavaScript and CSS folk test snippets of code, within some context, and debug the code collaboratively. JS Bin allows you to edit and test JavaScript and HTML (reloading the URL also maintains the state of your code - new tabs doesn't). Once you're happy you can save, and send the URL to a peer for review or help. They can then make further changes saving anew if required.