HTML/CSS from scratch - HTML basics (1)-HTML Tutorial-php.cn

HTML/CSS from scratch - HTML basics (1)

高洛峰

Release： 2016-10-09 15:29:01

Original

1005 people have browsed it

1. Web standards

1.1 structure

(1)xhtml (Extensible Hypertext Markup language) Extensible Hypertext Markup Language
(2)W3C (world wide web consortium) World Wide Web Consortium

a, formulated the structure ( xhtml, xml), performance (css), standards.

1.2 Performance

(1) css (cascading style sheets) cascading style sheets

1.3 Behavior

(1) ECMA (Europan Computer Manufactures Association) European Computer Manufacturers Association
a, formulated the behavior DOM (Document Object Model) text object model
b, ECMAscript standard

2. HTML basic structure

<!doctype html>
<html>
  <head>
  <meta charest="utf-8">     <!--编码格式-->
  <title></title>
  </head>
  <body>
  <h1></h1>                   <!--标题-->
      .
      .
      .
  <h6></h6>
  <p></p>                      <!--段落-->
  </body>
</html>

Copy after login

3. Basic syntax

3.1 General tags

is as follows:
/> & lt; br/& gt; & lt;!-Change-& gt;

& lt; img src = "path"/& gt; & lt;! Space

4. Common tags (labels)

4.1 List

a, ordered list

 <ol>  ordered
  <li></li>
  <li></li>
  <li></li>  
</ol>

Copy after login

b, unordered list

<ul>  unordered
  <li></li>
  <li></li>
  <li></li>  
</ul>

Copy after login

c, custom list

<dl>  definition list
  <dt>被解释</dt>  
  <dd>解释</dd>  definition description
</dl>

Copy after login

Note: dd can be repeated, but dt Only one is allowed;

Parameters style="A", start="3" in the ordered list, //The first sequence starts from C.

4.2 Picture Tags

Image (when insertion error) replacement text

4.3 Hyperlink

The path is divided into: absolute path (https//www.baidu.com), relative path such as (images/inder.html).
target The default attribute value is _Self; _blank to open the new window

4.4 label

Instructions: A. Automatically exchange between blocks
B. If P block is limited to wide and high, the content is in Chinese, automatic change; if it is English does not wrap lines and will overflow.

Note: a. There is no line break between span blocks. The width and height cannot be limited and change with the length of the text.

4.5 Table tag

1. Syntax:

2. Description: After the width and height of the table are given, when using the attribute cellpadding, if the given width exceeds the set width and height, the table will be stretched.

tr>
t;

3. Cell merge attributes

colspan Merge columns
rowspan Merge rows
Syntax: rowspan="3" //Merge three rows

4. Form

a, form box

Syntax: < form name="Form name" method="post/get" action="">
Description:

b, text box

c, password box

d, radio button

as follows:
Male
Female

e, multiple check box

Mate selection criteria

185
黑
male
Northeast

disabled="disabled"(disabled, disabled)
checked="checked"(default selected)
f, reset
(1) (Reset, clear the data filled in above)
g, button
(1)
(2)

Note: When the button is used as a label


< input type="button" value="Forgot your password?">