html5 api documentation

Copy preface:Using the new full-screen API, you can direct the user's attention to specific elements while hiding the background or diverting attention from other apps. Because the full-screen specification has not yet reached the final version, most browser vendors use unique identifiers to add prefixes to the API. In this example, Microsoft uses Ms. It is best to have a single function that can request fu

HTML5 geolocation API (geolocation application interface)Current PC Browser support situation:Firefox 3.5+Chrome 5.0+Safari 5.0+Opera 10.60+Internet Explorer 9.0+Phone Support situation:Android 2.0+IPhone 3.0+Opera Mobile 10.1+Symbian (S60 3rd 5th Generation)Blackberry OS 6MaemoTo detect whether the browser supports:If (navigator.geolocation) { //Console.log ("browser support!"); }Else// Console.log ("B

front end, it is not necessary to theoretically limit the size of the picture. Second, the picture front-end JS compression and upload function experienceSpecially made a picture front-end compression and upload the full demo, you can ruthlessly click here: Use canvas to compress images in the front and upload the demoEnter the demo to see a plain File entry box:Ah, no, it should be this picture:Click on the File selection box, we may wish to choose a larger size of the picture, such as th

Image uploading is a very common function in today's Web applications. If you do not need to preview images before uploading, you can simply use HTML + Javascript to implement the function, however, if you must provide the image preview function before uploading, you need to turn to Flash for help. However, with the advent of the HTML5 File API, this article will introduce how to use the

Media inquiries allow the site to adjust the layout according to the direction of the smartphone and tablet. But sometimes you want to lock the site to a specific direction, horizontal or vertical screen, at which point the native application format can be specified. App is only shown in preset format-independent of the actual device orientation. By using the HTML5 screen orientation API, you can define the

Comments: Web Worker in HTML5 can be divided into two different thread types: one is the Dedicated thread Dedicated Worker and the other is the Shared thread Shared Worker. The two types of threads have different purposes. If you are interested, you may find them helpful.Javascript execution mechanism Before HTML5, JavaScript in the browser runs in the form of a single thread. Although multiple methods have

, you can use the try...catch...finally statement to perform exception handling, which is used to catch exceptions caused by an error or to execute a throw statement. Its basic syntax is as follows:try {Here are the statements that may produce exceptions} catch (Error) {Here is the statement that is responsible for exception handling} finally {Here is the export statement}the code above attempts to create a canvas object and gets its context. If an error occurs, you can catch the error and know

I think it is better to learn a new technology and record it while learning it. In the future, I will read HTML5ProgramDesign records. First, let's see if our browser supports HTML5? If not, upgrade it now! CodeAs follows: Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" > Html Xmlns = "Http://www.w3.org/1999/xhtml" > Head > Title > Title > S

The HTML5 Development Company appmobi brings a gift to developers. The company decided to open up all the HTML5 APIs for most devices starting in November 25, even though this day is Black Friday. On the next Friday, the appmobi API will be open-source here. Appmobi is a company dedicated to developing HTML solutions. They do not want to develop some frameworks

1, the purpose of the tool: Use the HTML5 file API to read the MD5 code. MD5 code in the unique identification of the file has a very important application, the industry commonly used MD5 file recognition, file seconds, file security check, etc.2, Applicability: IE, Chrome are compatible;3, defects: When uploading large files, it takes a long time to scan out the MD5 code;4. Reference: JS file referenced (s

optimization of some new methods and properties, through the "/***" way to add routes, the disadvantage is the compatibility problem, after all, is the new addition of HTML5 things, With the continuous development of the browser, I believe that the major browser manufacturers will implement the API implementation.Let's start by looking at the Historyapi in H5:Property:Length: The number of history bars for

When the user agent sets the "current document readiness" of the document to "loading. (Current document readiness is actually the status corresponding to document. readystate API .) Reference: http://dev.w3.org/html5/spec/dom.html#current-document-readiness Bugs: 1. ie9. in the case of multipart output documents, this value is always later than the final responseend value. The bug implemented

implementation of the image pre-upload preview function, mainly using the HTML5 Files API implementation, IE can be compatible with some functions, in Firefox and Chrome under normal operation. HTML5 's file input tag supports multiple and accept, the previous property controls multiple file selections, and the latter controls the type of uploaded files. Learn m

Although the above mentioned in the "Advanced Programming of JavaScript" (second edition), the location.path/query in the BOM ... (window.location) After the change through JavaScript, the browser will be refreshed to reach your changed URL (location is the meaning of the site). )And after JavaScript MVC became popular, the way to modify URLs by refreshing them was annoying. In HTML5, however, an API is dev

Javascript advancedProgramAs mentioned in design (version 2), location. Path/query in Bom ...... (Window. Location) after being changed through JavaScript, the browser will refresh the URL you changed (location means location ..) Since JavaScript MVC began to become popular, the method of modifying the URL through refresh made people feel annoyed. However, HTML5 creates an API that can be used to modify t

HTML5 Communication API, html5communication This article discusses two important modules used to build real-time cross-origin communication:Cross-document message communication and XMLHttpRequest Level 2. Through them, we can build compelling Web applications, as a new communication means for HTML5 applications. These two building blocks allow secure communicatio

Those cattle HTML5 API (ii)1: Video player2: geo-positioningOur support HTML5 browser provides us with an interface (API) that can be used to get your current location.Mainly through geolocation (geographical location), objects, to access the hardware, to obtain the latitude and longitude.1 if (navigator.geolocation)

HTML5 Location Location InstanceThis article mainly introduces the method of HTML5 geo-location, and the example tells the HTML5 to obtain the coordinate complete realization process,and compare the results of different browser operation to give a reference, the need for friends can refer to the followingIn this paper, we describe the method of acquiring geo-loca

HTML5 provides some very powerful JavaScript and HTML APIs to help developers build wonderful desktop and mobile applications. This article will introduce five new types of APIS, hoping to help your development work. 1. Full Screen API) This API allows developers to program Web applications to run in full screen, making Web applications more like local applicat

Use of PageVisibility API for page switch activation in HTML5 HTMl5 launched a very "special" API Page Visibility. The reason for this is that this API focuses on a feature that is rarely noticed-whether the browser tab is activated. It must be explained that the "activation