2 HTML5 On Screen Keyboard Demos (Touch Support)

This article explores HTML5 Canvas-based on-screen keyboards and answers frequently asked questions about their implementation. Several examples are provided, showcasing different approaches.

Example 1: Multitouch Keyboard

This example uses HTML5 canvas, touch events, and Magictouch.js to create a multitouch-capable on-screen keyboard. The demo requires opening your web developer console.

Source Code & Demo

Example 2: Simple Virtual Keyboard

A basic virtual keyboard built with HTML Canvas and Javascript. Ideal for testing and various applications.

Source Code & Demo

Frequently Asked Questions (FAQs):

The following FAQs address common concerns about implementing HTML5 on-screen keyboards with touch support. Note that while the examples above use Canvas, the FAQs below discuss the VirtualKeyboard API, a different approach. The provided examples are not directly related to the VirtualKeyboard API.

• How can I implement a virtual keyboard in HTML5? Use the VirtualKeyboard API. This API offers methods like show() and hide() to control keyboard visibility and the onvisibilitychange event for handling visibility changes.

• What is the VirtualKeyboard API? A web API for interacting with device virtual keyboards. It controls visibility and responds to state changes, making it suitable for touch-screen applications.

• How can I use the VirtualKeyboard API with touch screen devices? The API is designed for touch screens. Use show(), hide(), onvisibilitychange, the layout property (for customization), and boundingRect (for size and position).

• Can I customize the layout? Yes, using the layout property.

• How can I get the size and position? Use the boundingRect property.

• How can I respond to visibility changes? Use the onvisibilitychange event.

• Can I use it with non-touch screen devices? Primarily for touch screens, but it might work with devices having software keyboards.

• Is it supported by all browsers? Check browser compatibility on MDN Web Docs.

• Can I use it in a mobile web application? Yes, it's designed for touch devices.

• How can I test my implementation? Run your application on a device with a virtual keyboard, using show(), hide(), and onvisibilitychange to verify functionality.

(Note: Replace https://www.php.cn/link/bd69a680c233578a87e46f33dfdc78b1 and https://www.php.cn/link/9167d3136c6495ed5e73160749d32625 with actual links to the source code and demos if available.)

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