- Briefly describe the function and characteristics of HTML.
HTML stands for Hypertext Markup Language and is a standard language for creating web pages. HTML documents usually contain HTML tags and text content, and tags are used to describe the structure and content of the document. HTML has the characteristics of easy learning, open standards, and good accessibility.
- What are HTML tags?
HTML tags are codes used to define elements in an HTML document. Tags usually appear in pairs, representing the start tag and end tag respectively, with the content of the element in the middle.
- Please list several commonly used HTML tags and their functions.
<html>: Defines the root element of the HTML document.<head>: Define the header area of the document, including the metadata of the document.<title>: Defines the title of the document, usually appearing in the title bar of the browser.<body>: Defines the main part of the document, containing the content of the document.<p>: Defines a paragraph.<a>: Define a hyperlink.<img>: Defines the picture.<div>: Defines a block in the document.<ul>: Defines an unordered list.<ol>: Defines an ordered list.<li>: Defines an item in the list.
- What are HTML attributes?
HTML attributes are used to set additional information about HTML elements. Properties usually consist of a name and a value, separated by an equals sign. Attributes usually appear at the beginning of the tag, eg <img src="example.jpg">.
- Please list several commonly used HTML attributes and their functions.
class: Define the class name of the element, used to set the style of the element or JavaScript operation.id: Defines the unique identifier of the element, used to manipulate the element in JavaScript.style: Defines the style of the element, including CSS properties and values.src: Define the resource path of the element, such as picture, audio, video, etc.href: Defines the element's hyperlink target, such as linking to another page or downloading a file.alt: Defines alternate text for the element, used to provide explanatory information when the element cannot be displayed.
- How to style HTML elements?
HTML elements can be styled using CSS (Cascading Style Sheets). CSS can be introduced through inline styles, embedded style sheets, or external style sheets. The inline style styleis set directly in the attribute of the element, the embedded style sheet is defined in <head>the tag using <style>the tag, and the external style sheet is defined in an independent CSS file and <link>imported through the tag.
- How to create text with hyperlinks?
Tags can be used <a>to create text with hyperlinks. <a>The tag's hrefattributes define the hyperlink target, which can be a URL, an anchor, or JavaScript code, for example:
<a href="<http://example.com>">跳转到Example网站</a>
- How to insert pictures in HTML?
Images can be <img>inserted using tags. <img>The attribute of the tag srcdefines the resource path of the image, and altthe attribute defines the alternate text of the image, for example:
<img src="example.jpg" alt="Example图片">
- How to create HTML tables?
You can use <table>, <tr>, <td>and other tags to create HTML tables. <table>Label definition table, <tr>label definition row, <td>label definition cell, for example:
<table>
<tr>
<td>第一行，第一列</td>
<td>第一行，第二列</td>
</tr>
<tr>
<td>第二行，第一列</td>
<td>第二行，第二列</td>
</tr>
</table>
- How to create ordered and unordered lists?
Ordered and unordered lists can be created using <ol>and tags, where the tags define the items in the list, for example:<ul><li>
<ul>
<li>列表项目1</li>
<li>列表项目2</li>
<li>列表项目3</li>
</ul>
<ol>
<li>列表项目1</li>
<li>列表项目2</li>
<li>列表项目3</li>
</ol>
- What are HTML forms?
An HTML form is an element used to collect user input data. Forms are composed of multiple form controls, such as text boxes, drop-down lists, radio boxes, check boxes, etc.
- How to create HTML form?
You can use <form>tags to create HTML forms, <input>, <select>, <textarea>and other tags are used to define form controls, for example:
<form>
<label for="username">用户名：</label>
<input type="text" id="username" name="username">
<label for="password">密码：</label>
<input type="password" id="password" name="password">
<input type="submit" value="登录">
</form>
- What is HTML metadata?
HTML metadata is a class of data used to describe HTML documents. Metadata usually includes the title, description, keywords, author and other information of the document, which can be used for SEO (Search Engine Optimization).
- How to set the title of the HTML document?
You can use <title>tags to set the title of HTML documents, for example:
<!DOCTYPE html>
<html>
<head>
<title>Example网站</title>
</head>
<body>
<!-- 文档内容 -->
</body>
</html>
- How to set description and keywords of HTML document?
You can use <meta>tags to set the description and keywords of HTML documents, for example:
<!DOCTYPE html>
<html>
<head>
<meta name="description" content="这是一个例子网站">
<meta name="keywords" content="Example, 网站">
<title>Example网站</title>
</head>
<body>
<!-- 文档内容 -->
</body>
</html>
- How to set charset of HTML document?
You can use <meta>tags to set the character set of HTML documents, for example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Example网站</title>
</head>
<body>
<!-- 文档内容 -->
</body>
</html>
- How to set the language of the HTML document?
The language of the HTML document can be set using the attribute <html>of the tag , for example:lang
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<title>Example网站</title>
</head>
<body>
<!-- 文档内容 -->
</body>
</html>
- What is the box model of HTML elements?
The box model of HTML elements is a model used to describe the size and layout of elements. The box model consists of an element's content area, padding, borders, and margins.
- How to set borders of HTML elements?
You can use CSS borderproperties to set the borders of HTML elements, for example:
div {
border: 1px solid black;
}
- How to set inner and outer margins of HTML elements?
You can use CSS's paddingand marginproperties to set the inner and outer margins of HTML elements, for example:
div {
padding: 10px;
margin: 10px;
}
- How to set the background color of an HTML element?
You can use CSS background-colorproperties to set the background color of HTML elements, for example:
div {
background-color: #e5e5e5;
}
- How to set width and height of HTML elements?
The width and height of HTML elements can be set using CSS's widthand properties, for example:height
div {
width: 200px;
height: 100px;
}
- How to set text color and font of HTML elements?
You can set the text color and font of an HTML element using CSS's colorand font-familyproperties, for example:
div {
color: red;
font-family: Arial, sans-serif;
}
- How to set the text alignment of HTML elements?
You can use CSS text-alignproperties to set the text alignment of HTML elements, for example:
div {
text-align: center;
}
- How to set the text decoration effect of HTML elements?
You can use CSS text-decorationproperties to set the text decoration effect of HTML elements, for example:
div {
text-decoration: underline;
}
- How to insert audio and video in HTML?
Audio and video can be inserted using <audio>and tags. <video>The attributes of these tags srcdefine the resource path, and controlsthe attribute defines whether to display the control, for example:
<audio src="example.mp3" controls></audio>
<video src="example.mp4" controls></video>
- How to use JavaScript in HTML?
JavaScript can be used <script>in HTML using tags. <script>A tag can contain JavaScript code directly, or it can srcintroduce a separate JavaScript file through attributes, for example:
<script>
// JavaScript代码
</script>
<script src="example.js"></script>
- How to comment in HTML?
You can use <!--and -->to comment HTML code, for example:
<!-- 这是一个注释 -->
- How to style hyperlinks in HTML?
You can use CSS aselectors to set the style of hyperlinks, for example:
a {
color: blue;
text-decoration: none;
}
- How to style an image in HTML?
You can use CSS imgselectors to set the style of the image, for example:
img {
border: 1px solid black;
margin: 10px;
}