what is difference between xhtml and html5

http://www.zhihu.com/question/20473051?sort=createdGeolocation's location information sources include GPS, IP address, RFID, WiFi and Bluetooth MAC address, and Gsm/cdms ID, among others. The specification does not specify the sequence of use of these devices, in the implementation of HTML5, mobile phones and other mobile devices, of course, priority to use GPS positioning, and notebook and some flat, the most accurate location

actually submitted to the local repository. The project code for each developer clone is a complete repository that can be easily restored with local storage when remote or other collaborative developer code cannot be recovered.Generally a page does not exist two requests for the request, the use of an interface, such as General details page, personal information page, etc., the page single function requires two requests, such as a list page with pag

It's not in the web development industry. I just want to know about it. Searching for this topic is simply something that mess urgently needs experts and insights. It's not in the web development industry. I just want to know about it, I searched this topic. Mess Experts are in urgent need of brilliant insights to get into the door and reply to the content: the trend is like the wind, the life

length of code. So what's the use of it? Quite simply, it allows you to determine whether the original value is correct (whether it has been changed). Generally used for encryption of passwords. and the MD5 check code we provide is the only corresponding piece of code for the installer. You can use any MD5 operator to calculate the downloaded file, if the result of the operation

What does the A-share fusing mechanism mean? A-share fusing mechanism means that when the Shanghai and Shenzhen 300 index triggers a 5%-fuse threshold, the transaction is suspended for 15 minutes, triggering a 7%-fuse threshold at any time of the day, and the transaction will be suspended until the closing period. When will the A-share fusing mechanism be implemented? A-share f

the function name itself is a variable. For function declarations and function expressions as shown below, it is very useful to understand that a function in JavaScript cannot be overloaded without considering the difference between a function declaration and a function expression.1 function f (a) {2 return a + 3} 4 5 function f (a) {6 return a-10; 7} 8

-level domain exactly the same function1. Level two domain name is the domain name of the primary domain.2. Level two domain name is the domain name that is hosted under the primary domain name, the weight is lower than the primary domain name.3. Level two domain name belongs to a separate branch, he has his own collec

The previous article is also the first question of Lao Zhao's interview questions. This article continues, hoping to find the key points of our study through these interview questions, instead of carrying these things, and hopes to systematically learn these points. net. What is the difference between class and struct?

Taobao page used is import, and many sites are using link, of course, there are some simple pages, traffic is very large site, is the CSS directly written in the HTML code? What's the difference between them? CSS with import or link good? From the classic forum and another website probably understand: 1, most of the T

What are CPK and PPK? What is the difference between them?A: CPK is complex process capability index.The abbreviation used by modern enterprises to representProcess Capability. Strong process capability can produce products with high quality and reliability.PPK

Java basic questions: What are the similarities and differences between runtime exceptions and general exceptions? What is the difference between error and exception? Please write the five most common runtimeexception ?, ThrowableIt is the parent class for Java Error handlin

What is Ogg? Vorbis Ogg Vorbis is a new audio compression format, similar to existing music formats such as MP3. But the difference is that it is completely free, open, and without patent restrictions. Vorbis

explain execution.There are many types of shell in Linux, common: Bourne Shell (/usr/bin/sh or/bin/sh) Bourne Again Shell (/bin/bash) C Shell (/USR/BIN/CSH) K Shell (/usr/bin/ksh) Shell for Root (/sbin/sh) ...... The shell is a command interpreter, between the kernel and the user, responsible for passing the user's instructions to the kernel and echoing the execution results back to the

What is the use of the serialize function? What's the difference with JSON?Official explanation:Serialize (PHP3 >= 3.0.5, PHP4) Serialize---produces a value that can be stored in the notation syntax: String serialize (mixed value) Description: Serialize () returns one containing the VA Lue represents the Byte-stream string, which can be stored anywhere. This can

Http://blog.sina.com.cn/s/blog_6d2890600101cwih.htmlThree data are missing a word, namely: "Programming", "Architecture" and "development" (or "Software Engineering"). At the same time, it is not "facing" components but "based on" components. Object-oriented Programming (Object-oreinted programming) is a programming paradigm. Refers to the way in which class instance objects are used extensively when

The so-called "Cloud" concept is to put databases and Management terminals remotely, that is, the cloud. Advantages of the cloud? 1. There are usually multiple servers on the cloud for redundancy, so it will not cause business Faults due to the failure of one server. 2. data can be stored on a remote server for a long time without being lost due to damage to the local hard disk. 3. The data server on th

such as the User's avatar some people say is saved on the server I do not know what the server is what ah in my mind there is no concept I know that the database is to keep things like the database can not save the Picture.

0. Reply: During the interview, you can ask questions about the specifications. I understand it that way, and then many people kneel down. I think that since I am proficient in writing, I should understand all the specifications. Example C # Q: Is C # A strong language? Does it support generics? Familiar with C # Q: Is string of C # A reference type or a value type?

, Google also provided a push method similar to Apple later. Not plagiarism. After all, there is no particular innovation in Apple's overall technological implementation.User battery?Apps developers will not consider it at the system level. He assumes that other Apps are less "unconscious ". What Google does not force is:No one is really responsible for the user'

Anyone who mentions static_cast, const_cast, reinterpret_cast, and dynamic_cast on the Internet will say that they have overcome the disadvantages of C-style type conversion and should use them.But what are the disadvantages of the C style? What are the advantages of C ++ cast?Before yesterday, I didn't even know what the cast was ). Yesterday, my colleagues ment