8 個值得了解的實用 HTML5 APIs
HTML5提出了許多有用的功能在新的API中，使其在短短的幾年里能夠在網頁設計師和開發人員中流行起來。有一些工具可在互聯網上建立互動和有效的Web應用程序。也有一些非常有用的API，幫助開發者高效建立網站與一些強大的功能 - 如在線視頻游戲，網頁知名度，測試代碼的性能，衡量應用程序的性能等。
1) HTML5 APIs – User Timing API
This specification defines an interface to help web developers measure the performance of their applications by giving them access to high precision timestamps. Web developers need the ability to assess and understand the performance characteristics of their applications. the PerformanceMark and PerformanceMeasure interfaces, and extensions to the Performance interface, which expose a high precision timestamp to developers so they can better measure the performance of their applications.
2) HTML5 API – Vibration
The API is specifically designed to address use cases that require simple tactile feedback only. Use cases requiring more fine-grained control are out of scope for this specification.
3) HTML5 API – Element Classlist
4) HTML5 API – High Resolution Time API
This specification defines a JavaScript interface that provides the current time in sub-millisecond resolution and such that it is not subject to system clock skew or adjustments.
5) HTML5 API – Speech Synthesis API
The SpeechSynthesis interface is the scripted web API for controlling a text-to-speech output.
6) HTML5 API – Dataset API
The dataset IDL attribute provides convenient accessors for all the data-* attributes on an element. On getting, the dataset IDL attribute must return a DOMStringMap object, associated with the algorithms.
7) HTML5 API – Web Speech API
This specification defines a JavaScript API to enable web developers to incorporate speech recognition and synthesis into their web pages. It enables developers to use scripting to generate text-to-speech output and to use speech recognition as an input for forms, continuous dictation and control. The JavaScript API allows web pages to control activation and timing and to handle results and alternatives.
8) HTML5 API - Page Visibility
The Page Visibility specification defines a means for site developers to programmatically determine the current visibility of a document and be notified of visibility changes. Without knowing the visibility state of a page, web developers have been designing webpages as if they are always visible.
