Share an integration of HTML knowledge points-HTML Tutorial-php.cn

The following editor will bring you a summary of front-end HTML knowledge points (recommended). The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference. Let’s follow the editor to take a look

1. Overview of html

htyper text markup language Hypertext Markup Language

Hypertext: It means that the page can contain pictures, links, and even non-text elements such as music and programs.

Markup language: A language composed of tags (tags).

Web page==HTML document, parsed by the browser, used for display

StaticWeb page: Static resources, such as xxx.html

Dynamic web page: The html code is dynamically generated by a certain development language based on user requests

The following For the tree structure diagram of the html file

The concept of tags:

• is wrapped by a pair of angle brackets For example: *Words in all tags cannot start with a number.

•Tags are not case-sensitive. and . It is recommended to use lowercase.

•The tag is divided into two parts: the start tag and the end tag . The part between the two tags is called the tag body.

•Some tag functions are relatively simple .Just use a tag. This kind of tag is called a self-closing sum tag. For example:

·tag Can be nested. But not cross-nested.

attribute of the tag:

•Usually appears in the form of key-value pairs. For example, name="alex"

•Attributes can only appear in the opening tag or self-closing tag.

•Attribute names are all lowercase. *Attribute values must be wrapped in double quotes or single quotes, such as name="alex"

•If the attribute value is exactly the same as the attribute name, just write the attribute name directly. For example, readonly

2. headIntroduction to the main tags

##•The composition of the meta tag: the meta tag has two attributes. , they are http-equiv attribute and name attribute respectively. Different attributes have different parameter values. These different parameter values realize different web page functions.

1 The name attribute is mainly used to describe web pages, and the corresponding attribute value is content. The content in content is mainly used to facilitate
search engine robots to find information and classify information.

<meta name="keywords"content="meta总结,html meta,meta属性,meta跳转">
<meta name="description"content="老男孩培训机构是由一个老的男孩创建的">

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2 http-equiv, as the name suggests, is equivalent to the file header function of http. It can return some useful information to the browser to help display web page content correctly and accurately. The corresponding attribute value is content, the content in content is actually the variable value of each parameter.

<meta http-equiv="Refresh"content="2;URL=https://www.php.cn"> //(注意后面的引号，分别在秒数的前面和网址的后面)
<meta http-equiv="content-Type"content="text/html;charset=UTF8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>老男孩</title>
<link rel="icon" href="http://www.jd.com/favicon.ico">

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3. Body tag

##Basic tag:

##: n The value range is 1~6; from large to small. Used to represent the title.

: Paragraph tag. The wrapped content is wrapped. There is also a line of blank space between the upper and lower content.

: Bold label.
: Add a center line to the text.
: The text becomes Italics.

^{and _{: superscript and subscript.

: line break.
: horizontal line

Block-level tags and inline tags
Block-level tags:
< ;ol>
Inline tag: _{^{< ;span><p></p><p></p>Characteristics of block (block) elements<p><strong><span style="color:#ff0000"></span>① Always starts on a new line;</strong></p>② Height, line height and <p>margins</p> and <p>padding<a href="http://www.php.cn/code/6043.html" target="_blank"> can all be controlled; </a><a href="http://www.php.cn/code/6040.html" target="_blank">③ The width defaults to 100% of its container, unless a width is set . </a></p>④ It can accommodate <p>inline elements</p> and other block elements<p><a href="http://www.php.cn/code/6472.html" target="_blank"></a></p>Characteristics of inline elements<p><strong><span style="color:#ff0000"></span>① and other elements are on the same line; </strong><p>② 高，行高及外边距和内边距不可改变；</p><p>③ 宽度就是它的文字或图片的宽度，不可改变</p><p>④ 内联元素只能容纳文本或者其他内联元素</p><p>对行内元素，需要注意如下</p><p>设置宽度<a href="http://www.php.cn/wiki/835.html" target="_blank">width</a> 无效。</p><p>设置高度<a href="http://www.php.cn/wiki/836.html" target="_blank">height</a> 无效，可以通过<a href="http://www.php.cn/wiki/864.html" target="_blank">line-height</a>来设置。</p><p>设置<a href="http://www.php.cn/wiki/931.html" target="_blank">margin</a> 只有左右margin有效，上下无效。</p><p>设置<a href="http://www.php.cn/wiki/948.html" target="_blank">padding</a> 只有左右padding有效，上下则无效。注意元素范围是增大了，但是对元素周围的内容是没影响的。</p><p><strong><span style="color:#ff0000"><a href="http://www.php.cn/wiki/88.html" target="_blank">特殊字符</a>：</span></strong></p><p>< >；"；©®</p><p>图形标签<img>：</p><p>src: 要显示图片的路径.</p><p>alt: 图片没有加载成功时的提示.</p><p>title: 鼠标悬浮时的提示信息.</p><p>width: 图片的宽</p><p>height:图片的高 (宽高两个属性只用一个会自动等比缩放.)</p><p><a href="http://www.php.cn/code/6537.html" target="_blank">超链接</a>标签<a>:　</p><p>href:要连接的资源路径格式如下: href="http://www.php.cn"</p><p>target: _blank : 在新的窗口打开超链接. <a href="http://www.php.cn/css/css-rwd-frameworks.html" target="_blank">框架</a>名称: 在指定框架中打开连接内容.</p><p>name: 定义一个页面的书签.</p><p>用于跳转 href : #书签名称.</p><p><strong>列表标签:</strong></p><p><ul>: 无序列表</p><p><ol>:有序列表</p><p> <li>:列表中的每一项.</p><p><dl> 定义列表</p><p> <dt> 列表标题</p><p> <dd> 列表项</p><p><a href="http://www.php.cn/code/5947.html" target="_blank">表格</a>标签<table>：</p><p><br/>border: 表格边框.</p><p>cellpadding: 内边距</p><p>cellspacing: 外边距.</p><p>width: 像素百分比.（最好通过css来设置长宽）</p><p><tr>: table row</p><p> <th>: table head cell</p><p> <td>: table data cell</p><p>rowspan: 单元格竖跨多少行</p><p>colspan: 单元格横跨多少列（即合并单元格）</p><p><th>: table header <tbody>(不常用): 为表格进行分区</p><p>表单标签<form></p><p>表单用于向服务器传输数据。</p><p>表单能够包含 input 元素，比如文本字段、<a href="http://www.php.cn/code/5981.html" target="_blank">复选框</a>、单选框、提交<a href="http://www.php.cn/code/5991.html" target="_blank">按钮</a>等等。</p><p>表单还可以包含textarea、select、fieldset和 label 元素。</p><p><strong><span style="color:#ff00ff">1、<a href="http://www.php.cn/code/5973.html" target="_blank">表单的属性</a></span></strong></p><p>HTML 表单用于接收不同类型的用户输入，用户提交表单时向服务器传输数据，从而实现用户与Web服务器的交互。表单标签, 要提交的所有内容都应该在该标签中.</p><p><a href="http://www.php.cn/java/java-Action.html" target="_blank">action</a>: 表单提交到哪. 一般指向服务器端一个程序,程序接收到表单提交过来的数据（即表单元素值）作相应处理，比如https://www.sogou.com/web</p><p>method: 表单的提交方式 post/get 默认取值就是 get（信封）</p><p>get: 1.提交的键值对.放在地址栏中url后面. 2.<a href="http://www.php.cn/wiki/397.html" target="_blank">安全</a>性相对较差. 3.对提交内容的长度有限制.</p><p>post:1.提交的键值对不在地址栏. 2.安全性相对较高. 3.对提交内容的长度理论上无限制.</p><p>get/post是常见的两种请求方式.</p><p><strong><span style="color:#ff00ff">2.表单元素</span></strong></p><p><input> <br/>type: <br/>text 文本输入框</p><p>password 密码输入框</p><p>radio 单选框</p><p>checkbox 多选框 </p><p>submit 提交按钮 </p><p>button 按钮(需要配合<a href="http://www.php.cn/wiki/48.html" target="_blank">js</a>使用.) button和submit的区别？</p><p><a href="http://www.php.cn/wiki/1313.html" target="_blank">file</a> 提交文件：form表单需要加上属性enctype="multipart/form-data"</p><p class="codeHead"><span class="lantxt"><a href="http://www.php.cn/xml/xml-html.html" target="_blank">XML/HTML</a> Code</span><span style="CURSOR: pointer" class="copyCodeText">复制内容到剪贴板</span></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:js;toolbar:false">def index(request):
print request.POST
print request.GET
print request.FILES
for item in request.FILES:
fileObj = request.FILES.get(item)
f = open(fileObj.name, 'wb')
iter_file = fileObj.chunks()
for line in iter_file:
f.write(line)
f.close()
return HttpResponse('ok')　</pre><div class="contentsignin">Copy after login</div></div><p>name: 表单提交项的键.注意和id属性的区别：name属性是和服务器通信时使用的名称；而id属性是浏览器端使用的名称，该属性主要是为了方便客户端<a href="http://www.php.cn/wiki/44.html" target="_blank">编程</a>，而在</p><p>css和<a href="http://www.php.cn/wiki/48.html" target="_blank">javascript</a>中使用的。</p><p>value: 表单提交项的值.对于不同的输入类型，value 属性的用法也不同：</p><p>type="button", "<a href="http://www.php.cn/wiki/1081.html" target="_blank">reset</a>", "submit" - 定义按钮上的显示的文本</p><p>type="text", "password", "hidden" - 定义输入字段的初始值</p><p>type="checkbox", "radio", "image" - 定义与输入相关联的值</p><p>checked: radio 和 checkbox 默认被选中</p><p>readonly: 只读. text 和 password</p><p>disabled: 对所用input都好使.</p><p><select> 下拉选标签属性：</p><p>name:表单提交项的键.</p><p>size：选项个数</p><p>multiple：multiple</p><p><option> 下拉选中的每一项属性：value:表单提交项的值. selected: selected下拉选默认被选中</p><p><optgroup>为每一项加上<a href="http://www.php.cn/code/10425.html" target="_blank">分组</a></p><p><textarea> 文本域 name:表单提交项的键. cols:文本域默认有多少列 rows:文本域默认有多少行</p><p><label></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:html;toolbar:false"> <label for="www">姓名</label>
<input id="www" type="text"></pre><div class="contentsignin">Copy after login</div></div><p><fieldset></p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:html;toolbar:false"><fieldset>
<leg
end
>登录吧</legend>
<input type="text">
</fieldset></pre><div class="contentsignin">Copy after login</div></div></p>
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