When you're nesting setTimeout(f, 0) calls, your browser will silently increase the delay to 5 milliseconds after the...

Here is a symbol of an eight note: ♪ Its two-byte hex representation is 0x266A. This card describes how to...

...The and tags both come with some non-default behavior that you know from other tags.

IE has a "Compatibility Mode" for old browsers. You can keep IE from offering it (and fix some other things...

to create a Gallery that has a name and has_many :images, which in turn have a...

TL;DR If you want to support most browsers, then don't exceed 50 cookies per domain, and don't...

Spreewald gives you the within meta step that will constrain page inspection to a given scope. Unfortunately, this does not...

jQuery's deferred objects behave somewhat like standard promises, but not really. One of many subtle differences is that there...

This card existed before, but was outdated due to browser implementation changes. The information below is validated for the current...

If you want to inspect the compiled code of your erb (or haml) templates, you can run the following code...

If you are on a Linux shell and want to open a file with whatever default application is configured for...

Let's say you want to find the element with the text hello in the following DOM tree: hello

Imagine you have a list you want to render inline on large screens, but stacked on small screens. high

Angular's directives have a transclude option, that allows for rendering an element's original content within the directive's...

Note The maintenance mode is enabled on all application server as soon as the file /public/system/maintenance.html is present. Installation

Once Rails knows a given string is html_safe, it will never escape it. However, there may be times when...

You know that layouting HTML e-mails is terrible. For more fun, check Litmus' list of top 10 e-mail...

There are cases when you need to select DOM elements without jQuery, such as: when jQuery is not available

A very informative and interesting presentation about browsing performance, looking at efforts Google Chrome takes to increase it.

You can use mail-tester.com to check your application's e-mails for issues that might cause e-mails to be...

Note This card does not reflect the current state of lazy loading technologies. The native lazy attribute could be used...

Nobody needs HTML e-mails. However, you occasionally might have to write an HTML message for some weird reason. Here...

Installing SSL certificates usually implies additionally using intermediate certificates. If one of them is missing, some SSL client implementations might...