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王林

May 29, 2023 pm 06:29 PM

HTML process

HTML (HyperText Markup Language, Hypertext Markup Language) is a standardized language for creating web pages and other online documents. It consists of elements, identified by tags, which tell the browser how to present the content of the web page to the user. In this article, we will explore the basic flow of HTML.

Define the basic structure of a web page

An HTML document always begins with the statement, which tells the browser this The document is an HTML5 document. Then, we use the <code> tag to define the beginning and end of the entire web page, like this:

<!DOCTYPE html>
<html>
<head>
  <title>我的网页</title>
</head>
<body>
  <!-- 网页内容在这里 -->
</body>
</html>

Within the tag, we respectively Use the and tags to define the head and body of the web page. In the header, we can define the metadata of the web page, such as title, keywords, and web page description. In the main section, we place our web page content.

Add text content and style

In the tag, we can use various HTML elements to add text content, such as Titles, paragraphs, lists, links, etc. For example:

<h1 id="欢迎来到我的网页">欢迎来到我的网页</h1>

<p>这是一段文本内容。Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc nisl justo, feugiat vel ante quis, placerat finibus eros.</p>

<ul>
  <li>列表项一</li>
  <li>列表项二</li>
  <li>列表项三</li>
</ul>

<a href="https://www.example.com/">这是一个链接</a>

In the above code, we use the <h1></h1> tag to display the title, <p></p> tag to add a paragraph, # The ##

and

tags create an unordered list, and the
tag creates a hyperlink. At the same time, we can use CSS (Cascading Style Sheets, cascading style sheets) to control the style of our web pages. We can include style code in the header using the
In this example, we define a light blue background for the entire web page, center the text in the title center, and define a font called "verdana" and a paragraph with a size of 20px . We also define the color of the link, making it blue and removing the underline. <p></p>
Use the
tag to add images to our web pages. For example:
```
<img src="/static/imghwm/default1.png"  data-src="https://www.example.com/image.jpg"  class="lazy" alt="一张图片">
```
In this example, we display an image called "image.jpg" and add a description of "an image" so that screen reading software can understand the content of the image. <p></p>We can also embed audio and video files in web pages. For example:
```
<audio controls>
  <source src="audio.mp3" type="audio/mpeg">
  <source src="audio.ogg" type="audio/ogg">
  Your browser does not support the audio tag.
</audio>

<video width="320" height="240" controls>
  <source src="video.mp4" type="video/mp4">
  <source src="video.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>
```
In this example, we added an audio and a video file. The
tag allows us to specify multiple audio or video files, and the browser will choose a supported format to play them. controls Property enables the player UI.
Using forms, users can submit data to our website. We can use various form elements in web pages, such as text boxes, radio boxes, check boxes, drop-down boxes, etc. For example:
```
<form>
  <label for="firstname">名字：</label>
  <input type="text" id="firstname" name="firstname"><br>

  <label for="lastname">姓氏：</label>
  <input type="text" id="lastname" name="lastname"><br>

  <label for="gender">性别：</label>
  <input type="radio" id="male" name="gender" value="male">
  <label for="male">男</label>
  <input type="radio" id="female" name="gender" value="female">
  <label for="female">女</label><br>

  <label for="country">国家：</label>
  <select id="country">
    <option value="china">中国</option>
    <option value="usa">美国</option>
    <option value="uk">英国</option>
  </select><br>

  <input type="submit" value="提交">
</form>
```
In this example, we create a basic form that contains elements such as first name, last name, gender, and country selection. We use the
label to identify each form element, and set the element's type attribute in the label.
Finally, when writing HTML code, we should always maintain the accessibility and usability of web pages. In this regard, we should add appropriate markup to web pages to make them easy to use assistive technologies such as screen readers. We should also follow good SEO (Search Engine Optimization) practices so that search engines can easily index our web pages. <p></p>Summary<p></p>HTML is a standardized language for creating web pages and online documents. In this article, we explore the basic process of HTML, including defining the structure of a web page and adding text content, styles, media such as images, audio and video, form elements, and page optimization. Understanding the basic flow and language elements of HTML makes it easier to write great web pages and online documents. <p></p>

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