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Chapter 2 Working hard for good xhtml

In the previous chapter we discussed div You should have a simple understanding of the principle of css, a web page production technology. In this chapter, we will learn something about xhtml. The reason why xhtml has been emphasized in the tutorial is because it is used in the transition from html to xml. xhtml (you can check the relevant knowledge of web standardization), people who work with computers must always follow the trend, and creating a good structure for the page to be written is the focus of this chapter.

What kind of standard What are the criteria for a well-structured page?

This is different for every developer, and they all have different writing habits. In short, the main premise is that it can better facilitate CSS style control and better facilitate background developers to merge data. Let’s first look at some specifications about xhtml code in web standards, so as to avoid detours when writing xhtml code in the future

1. All tags must have a corresponding closing tag

All tag pairs appear in pairs, such as <>. If the tag is not paired, please use to close it

2. The elements and attributes of all tags All names must be in lowercase

The difference between Xhtml and html is that they are case-sensitive are considered to be two different tags. If you use dreamwear to write code, please automatically generate Change the uppercase letters to lowercase, for example: onMouseOver is changed to onmouseover.

3. All tags must be reasonably nested

Only when you are actually doing development can you deeply understand the importance of reasonable nesting. Benefits, tag pairs of the same level are best aligned on the same line, for example:

   

Product One

                                                                                                                                     🎜>

                                                                      

Developing good coding habits at the beginning will be of great benefit in future work.

4. The attribute value must be pointed out with ""

5 Use encoding to represent all < and & special symbols

There are many such special symbols. If you use dreamwear to write code, a lot of them will pop up automatically when you press &. You can choose them yourself.

6. Attach a value to all attributes, if not, repeat itself

This is especially important when writing forms

7. There can only be four "----" in the comment

The comment in Xhtml is like this (there is an "=" sign inside)

Good practices are half the battle. The remaining half is up to you. You can just find some websites and view the source files to study its code writing. Of course, like Sina, you should avoid it for the time being. It takes several minutes to drag the source file, so it is not suitable for novices! Learn in actual development and grow quickly!

Learn from me DIV CSS (4) is being compiled and will be released soon, so stay tuned!