what is difference between xhtml and html5

For example, the Add method of a user Class, returns the user object instance in case of success, returns false in case of failure and can get the reason string of failure by the GetError method .... Speaking of which, I seem to understand that the Add method should always return the user object, or throw an exception? But in that case, there's no difference in the amount of code they have. The problem is

1. The difference is basically the same, SSH can also for mobile phone app development backstage. In fact, for background development, the principle is similar. But the app's background development and the web is not the same as the transmission of data format is not the sa

[Interview Questions] What is the difference between sizeof and strlen? sizeofstrlen Example: constchar * p = "Hello World"; char p [] = "Hello World"; what is the difference between length and occupied space? A: You can use strle

The Internet bandwidth problem is already the main bottleneck affecting Internet development, in many webmasters, many webmasters asked this question: "What is the difference between dual-line Single IP address and dual-line Dual IP address? What

Original link: http://blog.163.com/baibai_zheng/blog/static/51980755201022125325689/Introduction: Recently contacted Laravel database migration, the code Schema let me to the database and the difference between the two a bit of a circle, and then have this reprint.Creating a schema in MySQL seems to have the same effect as creating a database, which looks different in SQL Server and Orcal databases. At the moment I can only understand that schemaThe r

less than the nominal capacity, which in addition to some small amount of loss (algorithm, particle difference), some phones will also be the GPU occupied a portion of RAM, so some 2G mobile phones will see the actual capacity is 1.7g~1.8g. And the usable capacity will be less than the actual capacity, is due to the system occupation and the background of the us

innerHTML Compare Dom method, which performance is good? What's the difference? It's a cliché question! With the browser version and development! innerHTML is the industry standard developed by the world, almost all browsers have done support; as a native support, the implementation efficiency of innerHTML in the mainstream browser

type is greater than the source type: for example, int data can be automatically converted to double type2: Force data type conversion (narrowing conversion)Precede the variable with parentheses, specifying the type of the strong conversion in parenthesesExample: double A = 40.9;int b= (int) A;Note: Casting can lose numeric precision, such as a double type variable a, which is converted to an int type afte

1. Please check the information to understand these terms:/dev/hda,/dev/hdb,/DEV/SDA,/dev/sdb, what is the difference between them?A: Hda generally refers to the IDE interface of the hard disk, HDA refers to the first hard disk, HDB refers to the second hard disk, etc.; SDA refers to the SATA interface of the hard disk, SDA refers to the first hard disk, SDB refe

1. Link labels belong to the XHTML category, while @ import is unique in css2.1. In addition to loading CSS, link labels can also do many other things, such as defining RSS and rel connection attributes. @ import can only load CSS.2. the difference in the loading sequence is that when link loads CSS, It

What is the difference between an interface and an abstract class?What is the difference between an interface and an abstract class? What is

PDO: ERRMODE_EXCEPTIONPDO: ERRMODE_WARNING what is the difference? After reading this, I think the formats of the feedback information are different. What else does it look like? That is, when I explain it, I have a word quot; throw quot;. Who can tell me

Who told me what is the difference between the PHP5 series and the PHP4 series? who told me what is the difference between the PHP nbsp; 5 Series and PHP nbsp; 4 Series? currently, I only find PHP nbsp; does MYSQL be used as a

What is the difference between AMD Series A and FX series CPUs? In fact, the concept of the previous CPU is wrong, really do not know how to express the right. The difference between AMD Series A and FX series is obvious, the a se

Who told me what is the difference between the PHP5 series and the PHP4 series? who told me what is the difference between the PHP nbsp; 5 Series and PHP nbsp; 4 Series? currently, I only find PHP nbsp;

which is good for PHP and python? What is the difference between PHP and python? A lot of friends will come to ask such a question, then today's PHP Chinese network for everyone to say about the difference between PHP and Python,I believe you read this article should have so

A friend asked, what is the difference between padding and opacity, and when should you use the opacity? When should I use padding? Today @p big dot s Micro Bo to the students in a popular way to understand the difference between the two, the case vivid image, it is worth re

What is the difference between variable variables and reference values in php? In addition to the difference of amp, are there any other differences? What are the differences between variable variables and Reference Assignment in php? I just started to learn php by myself.