HTML5
HTML5 is the latest evolution of the standard that defines HTML. The term represents two different concepts: It is a new version of the language HTML, with new elements, attributes, and behaviors, and a larger set of technologies that allows more diverse and powerful Web sites and applications. This set is sometimes called HTML5 & friends and often shortened to just HTML5. Designed to be usable by all Open Web developers, this reference page links to numerous resources about HTML5 technologies, classified into several groups based on their function.
Why use CSS? - Web developer guides
Go to Previous Section:What is CSS?This second section of the CSS Getting Started tutorial explains the relationship between CSS and documents. In the exercise you'll learn how to add a CSS stylesheet to the sample document you created in the first section.
css · css
Summary Cascading style sheets (CSS) is the presentation language for web content. The World Wide Web Consortium maintains the CSS standard. Explore our CSS docs CSS selectors A reference guide to all the CSS selectors available.
RGB Color Codes Chart
RGB color picker | RGB color codes chart | RGB color space | RGB color format and calculation | RGB color table RGB color picker RGB color codes chart Hover with cursor on color to get the hex and decimal color codes below:
JavaScript
JavaScript (JS) is a lightweight, interpreted, programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as node.js and Apache CouchDB. JS is a prototype-based, multi-paradigm, dynamic scripting language, supporting object-oriented, imperative, and declarative (e.g. functional programming) styles.
Writing the best CSS when building with HTML5
Becoming HTML agnostic HTML agnostic means to use as little HTML in your CSS (or none). The key factor here is to avoid becoming markup reliant and avoid declaring qualified names (the element name). Let's take a basic structure for an unordered list navigation: <ul><li><a href="#">Link</a></li><li><a href="#">Link</a></li><li><a href="#">Link</a></li></ul>
Cascading Style Sheets
What is CSS? Cascading Style Sheets (CSS) is a simple mechanism for adding style (e.g., fonts, colors, spacing) to Web documents. These pages contain information on how to learn and use CSS and on available software. They also contain news from the CSS working group. Software
Shorthand properties
Definition Shorthand properties are CSS properties that let you set the values of several other CSS properties simultaneously. Using a shorthand property, a Web developer can write more concise and often more readable style sheets, saving time and energy.
Document Object Model (DOM)
The Document Object Model (DOM) is a programming interface for HTML, XML and SVG documents. It provides a structured representation of the document as a tree. The DOM defines methods that allow access to the tree, so that they can change the document structure, style and content. The DOM provides a representation of the document as a structured group of nodes and objects, possessing various properties and methods. Nodes can also have event handlers attached to them, and once an event is triggered, the event handlers get executed.
A very good time to understand CSS layout
I’ve been building a set of common UI patterns for my CSS Grid resource site, Grid by Example. These use CSS Grid Layout but include legacy layout in order that older browsers get some layout - even if not the full design that is implemented with Grid. Something that is apparent when doing this is how little we actually need to override. When items become grid items, much of their previous behaviour is removed. A floated, display: inline-block, display: table, or flex item all become grid items and lose the behaviour that comes with these layout types. This is as defined in the specification, and you can see some examples in this cheatsheet.
A Nerd's Guide to Color on the Web
There are a lot of ways to work with color on the web. I think it’s helpful to understand the mechanics behind what you’re using, and color is no exception. Let's delve into some of the technical details of color on the web.
Responsive Images: If you're just changing resolutions, use srcset.
If you're implementing responsive images (different images in HTML for different situations) and all you are doing is switching between different versions of the same image (the vast majority of usage), all you need is the srcset attribute on the <img>. Gaze upon this easy syntax: It's not just the syntax that is easy, it does a better job than <picture> with <source>s with explicit media attributes (we'll cover why in a moment). Plus it has the opportunity to be much better in the future with browser settings and browser improvements. I've screencasted about this before, but it clicked better watching Mat Marquis's talk at An Event Apart Austin and with Jason Grigsby's post. I'm writing about it again here because I think it's important for all of us to understand.
Using HTML5 audio and video
HTML5 introduces built-in media support via the <audio> and <video> elements, offering the ability to easily embed media into HTML documents. Embedding media in your HTML document is trivial: <video src=" controls> Your browser does not support the <code>video</code> element. </video> This example plays a sample video, with playback controls, from the Theora web site. Here is an example for embedding audio into your HTML document
Free Monitoring Test Tools by WebSitePulse
Enter specific URL (example The Website test verifies the server status, downloads the full HTML content and measures the response time of the test website. The test results display the times for DNS lookup, connect, download the first byte and download the complete HTML of the tested website. The Web page test verifies the URL availability, downloads the complete HTML content, the images and all the other internal web page objects and measures the download speed of each of the components. The test results display DNS time, connect time, first and last byte times for each of the web page objects. This test is limited to the initial 30 page objects.
