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主屏幕上的全屏APP,带有推送通知、徽章等。

在iOS和iPadOS上安装此APP
  1. 在Safari中轻敲分享图标
  2. 滚动菜单并轻敲添加到主屏幕
  3. 轻敲右上角的添加按钮。
在安卓上安装此APP
  1. 轻敲浏览器右上角的三个点菜单 (⋮) 。
  2. 轻敲添加到主屏幕安装APP
  3. 轻敲安装进行确认。
  • 选择语言

HTML Paragraphs

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HTML Paragraphs


A paragraph always starts on a new line, and is usually a block of text.


HTML Paragraphs

The HTML <p> element defines a paragraph.

A paragraph always starts on a new line, and browsers automatically add some white space (a margin) before and after a paragraph.

Example

<p>This is a paragraph.</p>
<p>This is another paragraph.</p>

HTML Display

You cannot be sure how HTML will be displayed.

Large or small screens, and resized windows will create different results.

With HTML, you cannot change the display by adding extra spaces or extra lines in your HTML code.

The browser will automatically remove any extra spaces and lines when the page is displayed:

Example

<p>
This paragraph
contains a lot of lines
in the source code,
but the browser
ignores it.
</p>

<p>
This paragraph
contains         a lot of spaces
in the source         code,
but the        browser
ignores it.
</p>


HTML Horizontal Rules

The <hr> tag defines a thematic break in an HTML page, and is most often displayed as a horizontal rule.

The <hr> element is used to separate content (or define a change) in an HTML page:

Example

<h1>This is heading 1</h1>
<p>This is some text.</p>
<hr>
<h2>This is heading 2</h2>
<p>This is some other text.</p>
<hr>

The <hr> tag is an empty tag, which means that it has no end tag.


HTML Line Breaks

The HTML <br> element defines a line break.

Use <br> if you want a line break (a new line) without starting a new paragraph:

Example

<p>This is<br>a paragraph<br>with line breaks.</p>

The <br> tag is an empty tag, which means that it has no end tag.


The Poem Problem

This poem will display on a single line:

Example

<p>
  My Bonnie lies over the ocean.

  My Bonnie lies over the sea.

  My Bonnie lies over the ocean.

  Oh, bring back my Bonnie to me.
</p>

Solution - The HTML <pre> Element

The HTML <pre> element defines preformatted text.

The text inside a <pre> element is displayed in a fixed-width font (usually Courier), and it preserves both spaces and line breaks:

Example

<pre>
  My Bonnie lies over the ocean.

  My Bonnie lies over the sea.

  My Bonnie lies over the ocean.

  Oh, bring back my Bonnie to me.
</pre>


HTML Tag Reference

W3Schools' tag reference contains additional information about HTML elements and their attributes.

Tag Description
<p> Defines a paragraph
<hr> Defines a thematic change in the content
<br> Inserts a single line break
<pre> Defines pre-formatted text

For a complete list of all available HTML tags, visit our HTML Tag Reference.


Video: HTML Paragraphs

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配置浏览器推送通知

Chrome (安卓)
  1. 轻敲地址栏旁的锁形图标。
  2. 轻敲权限 → 通知。
  3. 调整你的偏好。
Chrome (台式电脑)
  1. 点击地址栏中的挂锁图标。
  2. 选择网站设置。
  3. 找到通知选项并调整你的偏好。