By Jesse Cravens, Jeff Burtoft
With ninety certain hacks, professional net builders Jesse Cravens and Jeff Burtoft exhibit fascinating makes use of of HTML5-related applied sciences. each one recipe presents a transparent rationalization, screenshots, and entire code examples for requirements that come with Canvas, SVG, CSS3, multimedia, facts garage, net employees, WebSockets, and geolocation.
You’ll additionally locate hacks for HTML5 markup parts and attributes that may offer you an effective starting place for artistic recipes that stick to. The final bankruptcy walks you thru every little thing you must comprehend to get your HTML5 app off the floor, from Node.js to deploying your server to the cloud.
Here are only a number of the hacks you’ll locate during this book:
* Make iOS-style card flips with CSS transforms and transitions
* exchange the heritage of your video with the Canvas tag
* Use Canvas to create high-res Retina Display-ready media
* Make parts in your web page user-customizable with editable content material
* Cache media assets in the neighborhood with the filesystem API
* Reverse-geocode the site of your internet app person
* technique snapshot info with pixel manipulation in a devoted internet employee
* Push notifications to the browser with Server-Sent occasions
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Additional resources for HTML5 Hacks: Tips & Tools for Creating Interactive Web Applications
Say you are applying for a loan and you’re using a range tool to choose your loan amount. For an improved user experience, you may want to round up to the nearest $10,000. Setting the step to 10,000 will allow you to do just that. value We’ve seen value hundreds of times when it comes to input: it allows us to set the initial value of that input. It’s of particular interest on the range input type, because there is no “null” value. Since it is a slider, there is no point at which the value would be undefined, so the user agent will choose a reasonable default value for you—something in the middle of the range.
This is what microformatting is for, which we will discuss in depth in a few hacks. Your custom data attribute is intended to provide information that is relevant for your application, not for an external page reader (whether it is human or machine). Now, on to the fun part! How should you use custom data attributes? Simply put, you should use them for “anything you need,” with emphasis on the words anything and you. Anytime you need access to data about a DOM element or to data related to the information that element represents, store it in the custom data attribute.
Remember a few hacks back when I was complaining about how the form elements weren’t validated in real time (such as when you enter data into the input rather than at form submit) and that only the CSS state change was in real time? Let’s look at an example of how we can put some of these events together to make the solution to my pet peeve a reality! Real-Time Form Validation with the oninput/oninvalid Events In order to validate an input field while the user is entering data into it, we need an event which fires as the user changes the value of the input.
HTML5 Hacks: Tips & Tools for Creating Interactive Web Applications by Jesse Cravens, Jeff Burtoft