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HomeWeb Front-endHTML TutorialHTML study notes 2

HTML study notes 2

不言
不言
Apr 19, 2018 pm 02:32 PM
htmlstudynotes


The content of this article is about HTML learning notes 2. It has a certain reference value. Now I share it with you. Friends in need can refer to it

1 , table

<table border="1">
<tr>
<td>row 1, cell 1</td>
<td>row 1, cell 2</td>
</tr>
<tr>
<td>row 2, cell 1</td>
<td>row 2, cell 2</td>
</tr>
</table>

......define rows, define columns

Header represents: 

<tr>
<th>heading</th>
</tr>

If you want to represent a blank line, you can fill it with  space placeholder.


2. List



##First type: None Sequence listing -
    , use bold dot mark 

    <ul>
<li>Coffee</li>
<li>Milk</li>
</ul>


    or use
      ...use an open circle point.


      ##Second type: Ordered list——

    , use numbers to mark 

    <ol>
<li>Coffee</li>
<li>Milk</li>
</ol>


    Or use

      ... to indicate that the number starts from 50.



      ##Third type: Custom list——


      <dl>
<dt>Coffee</dt>
<dd>Black hot drink</dd>
<dt>Milk</dt>
<dd>White cold drink</dd>
</dl>

      Explanation:

      indicates the beginning of the list



      ##
      Indicates list items


      Indicates the definition of list items


      ## Note that paragraphs, line breaks, pictures, links, other lists, etc. can be used inside list items.




      3. HTML class

      Classifies HTML and can An element's class defines the CSS style.


      Set the same style for the same class. 

      <!DOCTYPE html>
<html>
<head>
<style>
.cities {
    background-color:black;
    color:white;
    margin:20px;
    padding:20px;
} 
</style>
</head>

<body>

<p class="cities">
<h2 id="London">London</h2>
<p>
London is the capital city of England. 
It is the most populous city in the United Kingdom, 
with a metropolitan area of over 13 million inhabitants.
</p>
</p> 

</body>
</html>



      #< ;p> is a block-level element used to set the same class.
      is an inline element. 

      <html>
<head>
<style>
  span.red {color:red;}
</style>
</head>
<body>

<h1 id="My-nbsp-span-nbsp-class-red-Important-span-nbsp-Heading">My <span class="red">Important</span> Heading</h1>

</body>
</html>


      4. HTML website layout

      (1) Use

      for layout


      <head>
<style>
#header {
    background-color:black;
    color:white;
    text-align:center;
    padding:5px;
}
#nav {
    line-height:30px;
    background-color:#eeeeee;
    height:300px;
    width:100px;
    float:left;
    padding:5px;	      
}
#section {
    width:350px;
    float:left;
    padding:10px;	 	 
}
#footer {
    background-color:black;
    color:white;
    clear:both;
    text-align:center;
   padding:5px;	 	 
}
</style>
</head>

      Use


      (2) HTML5 Provided new semantic elements



      Defines the header of a document or section

      < ;nav>Define a container for navigation links


      ##
      Define a section in a document



      ##

      Define the footer of a document or section


      ##
      Define additional details

      Define the title of the details element



      ##5. Frames


      By using frames, more than one page can be displayed in the same browser window. Each HTML document becomes a frame, and each frame is independent of other frames.



      ## (1) Frame structure tag

      Each defines a series of columns Rows and columns



      The value of rows/columns specifies the area of ​​the screen occupied by each row or column

      <frameset cols="25%,75%">
   <frame src="frame_a.htm">
   <frame src="frame_b.htm">
</frameset>

      (2) Others

      Generally, a frame has a visible border, and the user can drag the border to change its size. If you want to avoid it, you can add noresize="noresize" to .



      #The tag and the tag cannot be used at the same time. However, when adding a tag that contains a piece of text, the text must be nested within the tag. <p><pre class='brush:php;toolbar:false;'>&lt;html&gt; &lt;frameset cols=&quot;25%,50%,25%&quot;&gt; &lt;frame src=&quot;/example/html/frame_a.html&quot;&gt; &lt;frame src=&quot;/example/html/frame_b.html&quot;&gt; &lt;frame src=&quot;/example/html/frame_c.html&quot;&gt; &lt;noframes&gt; &lt;body&gt;您的浏览器无法处理框架！&lt;/body&gt; &lt;/noframes&gt; &lt;/frameset&gt; &lt;/html&gt;</pre></p> <frame>You can use the name anchor attribute to jump to the specified section. <p><br></p> <p><br></p> <p><br>##<iframe>Used to display web pages within web pages</iframe></p> <p>Usage:<iframe src="URL" width="200" height="200" frameborder="0"></iframe></p> <p><br></p> <p><br></p> <p>iframe可用作链接的目标（target），该链接的target属性必须引用iframe的name属性。</p><pre class='brush:php;toolbar:false;'>&lt;iframe src=&quot;demo_iframe.htm&quot; name=&quot;iframe_a&quot;&gt;&lt;/iframe&gt; &lt;p&gt;&lt;a href=&quot;http://www.w3school.com.cn&quot; target=&quot;iframe_a&quot;&gt;W3School.com.cn&lt;/a&gt;&lt;/p&gt;</pre><p><br></p> <p>注意，由于链接的目标匹配iframe的名称，所以链接会在iframe中打开。</p> <p>相关推荐：</p> <p><a href="http://www.php.cn/div-tutorial-393431.html" target="_self">HTML学习笔记一</a></p>

......

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