Detailed explanation of sample code for lists in HTML (picture)

Lists in HTML

There are three types of lists in HTML: ordered lists, unordered lists and definition lists.

1. An ordered list is a list of items marked with numbers. It is contained in the

tag (ordered lists) using
1. ;

   
   

   <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #0000ff;"><</span><span style="color: #800000;">ol</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">开始部分</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">次要部分</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">结尾部分</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ol</span><span style="color: #0000ff;">></span></p>

   

   ##2. An unordered list is a group of items marked with black dots, which are included in the
   tag (unordered lists) using
   • ;

     
     

     <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #0000ff;"><</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于主题</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于形式</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于内容</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span></p>

     

     3. The definition list semantically represents a combination of items and their annotations. It starts with the

     tag (definition lists). Initially, the custom list item starts with

     (definition title), and the definition of the custom list item starts with

     (definition description).

     
     

     <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #0000ff;"><span style="font-weight: normal;"><</span></span><span style="color: #800000;"><span style="font-weight: normal;">dl</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;"><br/></span></span><span style="color: #0000ff;"><span style="font-weight: normal;"><</span></span><span style="color: #800000;"><span style="font-weight: normal;">dt</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;">CSS</span></span><span style="color: #0000ff;"><span style="font-weight: normal;"></</span></span><span style="color: #800000;"><span style="font-weight: normal;">dt</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;"><br/></span></span><span style="color: #0000ff;"><span style="font-weight: normal;"><</span></span><span style="color: #800000;"><span style="font-weight: normal;">dd</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;">CSS概念</span></span><span style="color: #0000ff;"><span style="font-weight: normal;"></</span></span><span style="color: #800000;"><span style="font-weight: normal;">dd</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;"><br/></span></span><span style="color: #0000ff;"><span style="font-weight: normal;"><</span></span><span style="color: #800000;"><span style="font-weight: normal;">dd</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;">CSS应用</span></span><span style="color: #0000ff;"><span style="font-weight: normal;"></</span></span><span style="color: #800000;"><span style="font-weight: normal;">dd</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;"><br/></span></span><span style="color: #0000ff;"><span style="font-weight: normal;"><</span></span><span style="color: #800000;"><span style="font-weight: normal;">dd</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;">CSS hacks</span></span><span style="color: #0000ff;"><span style="font-weight: normal;"></</span></span><span style="color: #800000;"><span style="font-weight: normal;">dd</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span><span style="color: #000000;"><span style="font-weight: normal;"><br/></span></span><span style="color: #0000ff;"><span style="font-weight: normal;"></</span></span><span style="color: #800000;"><span style="font-weight: normal;">dl</span></span><span style="color: #0000ff;"><span style="font-weight: normal;">></span></span></p>

     

     Semantically speaking, the three sets of tags correspond to different lists with different meanings: unordered lists It is suitable for situations where there is no hierarchical sequence relationship between members; the ordered list is suitable for situations where there is a sequence relationship between items; the definition list is used for one term name corresponding to multiple definitions or multiple term names with the same given definition, or it can only have The name of a term may only have a definition, that is to say, there is no limit to the number and correspondence between

     and

     .

     CSS for lists

     The most important CSS attribute for lists is the list-style attribute. Its syntax is as follows:

     list-style:list -style-image||list-style-position||list-style-type

     list-style-image can define the image used in front of the list. The value of the list-style-position attribute includes outside and inside; outside is the default value. The list item mark is now placed outside the text, and it will wrap the text outside the text. The inside list item is rotated within the text, and the surrounding text is aligned.

     The most important CSS attribute of the list is the list-style attribute. Its syntax is as follows:

     
     

     Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->list-style:list-style-image||list-style-position||list-style-type

     list-style-image can define the previous item in the list. Using images, the value of the list-style-position attribute includes outside and inside; outside is the default value. The list item mark is placed outside the text at this time, and it will wrap the text outside the text. The inside list item is rotated inside the text, wrapping Text alignment.

     
     

     <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #800000;"><style type="text/css"><br/>ul</span><span style="color: #000000;">{</span><span style="color: #ff0000;">border</span><span style="color: #000000;">:</span><span style="color: #0000ff;">dotted 1px #666</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>li</span><span style="color: #000000;">{</span><span style="color: #ff0000;">background</span><span style="color: #000000;">:</span><span style="color: #0000ff;">#ddd</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>ul.out</span><span style="color: #000000;">{</span><span style="color: #ff0000;">list-style-position</span><span style="color: #000000;">:</span><span style="color: #0000ff;">outside</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>ul.in</span><span style="color: #000000;">{</span><span style="color: #ff0000;">list-style-position</span><span style="color: #000000;">:</span><span style="color: #0000ff;">inside</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/></style></span></p>

     list-style-position is outside

     
     

     <p><span style="color: #0000ff;"><</span><span style="color: #800000;">ul </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="out"</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于主题</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于形式</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于内容</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">h4</span><span style="color: #0000ff;">></span><span style="color: #000000;">list-style-position为inside</span><span style="color: #0000ff;"></</span><span style="color: #800000;">h4</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">ul </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="in"</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于主题</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于形式</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">关于内容</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span></p>

     

     if list When the padding-left of the outer label

     or

     or

     is set to 0, and the list-style-position is outside, the list symbol will not be displayed. As in the above example, adding padding-left to ul: 0; will be displayed as follows:

     ##list-style-type is a list display type, which has 9 common attribute values:

     disc:Default value. Solid circle
     circle: Hollow circle
     square: Solid square
     decimal: Arabic numerals
     lower-roman: lowercase Roman numerals
     upper-roman: uppercase Roman numerals
     lower-alpha: lowercase English letters
     upper-alpha: uppercase English letters
     none: do not use bullets
     We can see that the three different lists are actually just different default values ​​of list-style-type. Different display effects can be achieved by setting list-style-type.

     

     Nesting between lists

     HTML writing of nested lists is a mistake that many people tend to make. They often write The wrong format is like this:

     <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #0000ff;"><</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">男性</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">ol</span><span style="color: #0000ff;">></span><span style="color: #000000;">女性<br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">女孩子</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">姑娘</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">大妈</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ol</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span></p>

     
     There are two mistakes here: one is that

     is not allowed to be followed directly by text, and the second is that the text "female" here should After the second
     • . The correct format is as follows:

       <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #0000ff;"><</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">男性</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">女性<br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">ol</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">女孩子</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">姑娘</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;">大妈</span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ol</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">li</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">ul</span><span style="color: #0000ff;">></span></p>

       
       Using appropriate tags for reasonable nesting can achieve many complex layouts, such as common tab tags, sliding doors, etc. without using js at all. It can be completed by operating the DOM, and it is simple to implement and has strong semantics. For example, there is also this article defining list dl to create a CSS list element with pictures and texts.

       The following example takes the article list as an example, and the html is as follows:

       <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #0000ff;"><</span><span style="color: #800000;">h4</span><span style="color: #0000ff;">></span><span style="color: #000000;">www.51obj.cn站点文章列表摘要</span><span style="color: #0000ff;"></</span><span style="color: #800000;">h4</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dl</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dt</span><span style="color: #0000ff;">><</span><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="http://www.51obj.cn/"</span><span style="color: #ff0000;"> title</span><span style="color: #0000ff;">="51obj.cn"</span><span style="color: #0000ff;">></span><span style="color: #000000;">文章一：javascript程序的优化</span><span style="color: #0000ff;"></</span><span style="color: #800000;">a</span><span style="color: #0000ff;">></</span><span style="color: #800000;">dt</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dd</span><span style="color: #0000ff;">></span><span style="color: #000000;">文章发布时间:2010-4-17</span><span style="color: #0000ff;"></</span><span style="color: #800000;">dd</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dt</span><span style="color: #0000ff;">><</span><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="http://www.51obj.cn/"</span><span style="color: #ff0000;"> title</span><span style="color: #0000ff;">="51obj.cn"</span><span style="color: #0000ff;">></span><span style="color: #000000;">文章二：深入解析javascript中eval</span><span style="color: #0000ff;"></</span><span style="color: #800000;">a</span><span style="color: #0000ff;">></</span><span style="color: #800000;">dt</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dd</span><span style="color: #0000ff;">></span><span style="color: #000000;">文章发布时间：2010-4-17</span><span style="color: #0000ff;"></</span><span style="color: #800000;">dd</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dt</span><span style="color: #0000ff;">><</span><span style="color: #800000;">a </span><span style="color: #ff0000;">href</span><span style="color: #0000ff;">="http://www.51obj.cn/"</span><span style="color: #ff0000;"> title</span><span style="color: #0000ff;">="51obj.cn"</span><span style="color: #0000ff;">></span><span style="color: #000000;">文章三：实现SQLite高并发的问题</span><span style="color: #0000ff;"></</span><span style="color: #800000;">a</span><span style="color: #0000ff;">></</span><span style="color: #800000;">dt</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"><</span><span style="color: #800000;">dd</span><span style="color: #0000ff;">></span><span style="color: #000000;">文章发布时间:2010-4-17</span><span style="color: #0000ff;"></</span><span style="color: #800000;">dd</span><span style="color: #0000ff;">></span><span style="color: #000000;"><br/></span><span style="color: #0000ff;"></</span><span style="color: #800000;">dl</span><span style="color: #0000ff;">></span></p>

       CSS样式如下：

       
       

       <p><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #800000;"><style type="text/css"><br/>h4</span><span style="color: #000000;">{</span><span style="color: #ff0000;">font-size</span><span style="color: #000000;">:</span><span style="color: #0000ff;">14px</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> color</span><span style="color: #000000;">:</span><span style="color: #0000ff;">#333</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>a</span><span style="color: #000000;">{</span><span style="color: #ff0000;">color</span><span style="color: #000000;">:</span><span style="color: #0000ff;">#069</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>dl</span><span style="color: #000000;">{</span><span style="color: #ff0000;"> border</span><span style="color: #000000;">:</span><span style="color: #0000ff;">dashed 1px #666</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> font-size</span><span style="color: #000000;">:</span><span style="color: #0000ff;">14px</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> padding</span><span style="color: #000000;">:</span><span style="color: #0000ff;">4px</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> background</span><span style="color: #000000;">:</span><span style="color: #0000ff;">#FDFBDB</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>dt</span><span style="color: #000000;">{</span><span style="color: #ff0000;">clear</span><span style="color: #000000;">:</span><span style="color: #0000ff;">left</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> float</span><span style="color: #000000;">:</span><span style="color: #0000ff;">left</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> padding</span><span style="color: #000000;">:</span><span style="color: #0000ff;">4px 0</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/>dd</span><span style="color: #000000;">{</span><span style="color: #ff0000;"> text-align</span><span style="color: #000000;">:</span><span style="color: #0000ff;">right</span><span style="color: #000000;">;</span><span style="color: #ff0000;">  padding</span><span style="color: #000000;">:</span><span style="color: #0000ff;">4px 0</span><span style="color: #000000;">;</span><span style="color: #ff0000;">font-size</span><span style="color: #000000;">:</span><span style="color: #0000ff;">12px</span><span style="color: #000000;">;</span><span style="color: #ff0000;"> color</span><span style="color: #000000;">:</span><span style="color: #0000ff;">#666</span><span style="color: #000000;">;</span><span style="color: #000000;">}</span><span style="color: #800000;"><br/></style></span></p>

       效果图：

       
       

       

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