Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you what are the common errors in DIV+CSS coding. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

DIV+CSS is one of the commonly used terms in the website standard (or "Web standard"). It is usually to explain the difference between the positioning method of the form (table) in the HTML web design language, because the XHTML website design standard no longer uses the table positioning technology, but uses the DIV+CSS way to achieve all kinds of positioning. It is easy to make some mistakes when applying DIV+CSS coding. The editor lists some common mistakes:

1. Check to see if the HTML element has spelling mistakes and forgets the closing tag

Even veterans often get the nesting relationship of div wrong. You can use dreamweaver's verification function to check for errors.

two。 Check whether the CSS is correct

Check to see if there are any spelling mistakes, if you forget the ending, etc. You can use CleanCSS to check for spelling errors in CSS. CleanCSS is supposed to be a weight loss tool for CSS, but it can also check for spelling mistakes.

3. Determine where the error occurred

If the error affects the overall layout, you can delete the div blocks one by one until the display returns to normal after deleting a div block to determine where the error occurred.

4. Using the border attribute to determine the layout characteristics of the error element

Accidentally laying out using the float attribute can lead to errors. At this point, add the border attribute to the element to determine the element boundary, and the cause of the error will be revealed.

5. The parent element of the float element cannot specify the clear attribute

Under MacIE, if you use the clear attribute on the parent element of the float element, the layout of the surrounding float elements will be confused. This is MacIE's famous bug. If you don't know it, you will take a detour.

6. The float element must specify the width attribute

Many browsers have bug when displaying float elements that do not specify a width. So be sure to specify the width attribute for the float element, regardless of its content. In addition, try to use em instead of px as units when specifying elements.

7. Float elements cannot specify attributes such as margin and padding

IE has bug when displaying float elements that specify margin and padding. So do not specify the margin and padding attributes on the float element (you can set margin and padding by nesting a div inside the float element). You can also use the hack method to specify a special value for IE.

8. The sum of the widths of float elements should be less than 100%

If the sum of the widths of the float elements is exactly 100%, some old browsers will not display properly. So make sure the sum of the widths is less than 99%.

9. Has the default style been reset?

Some properties, such as margin, padding, etc., will be interpreted differently by different browsers. Therefore, * * set all margin and padding to 0, list style to none and so on before development.

10. Did you forget to write DTD?

If the results are different no matter how you adjust the display in different browsers, check to see if you forgot to write the following line of DTD at the beginning of the page:

these are the common errors in DIV+CSS coding shared by the editor. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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