未验证 提交 894eebe8 编写于 作者: O openharmony_ci 提交者: Gitee

!2068 1560 处理完成:RichText文档

Merge pull request !2068 from ester.zhou/TR-1560
# RichText
> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
> This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
The **\<RichText>** component parses and displays HTML text.
## Required Permissions
None
## Child Components
None
## APIs
RichText\(content:string\)
- Parameters
| Name| Type| Mandatory| Default Value| Description|
| -------- | -------- | -------- | -------- | -------- |
| content | string | Yes| - | String in HTML format.|
## Events
| Name| Description|
| -------- | -------- |
| onStart() => void | Triggered when web page loading starts.|
| onComplete() => void | Triggered when web page loading is completed.|
## Supported Tags
| Name| Description| Example|
| -------- | -------- | -------- |
| \<h1>--\<h6> | Defines six levels of headings in the HTML document. \<h1> defines the most important heading, and \<h6> defines the least important heading.| \<h1>This is an H1 heading\</h1> \<h2>This is an H2 heading\</h2>|
| \<p>\</p> | Defines a paragraph.| \<p>This is a paragraph\</p>|
| \<br/> | Inserts a newline character.| \<p>This is a paragraph\<br/>This is a new paragraph\</p>|
| \<hr/> | Defines a thematic break (such as a shift of topic) on an HTML page and creates a horizontal line.| \<p>This is a paragraph\</p>\<hr/>\<p>This is a paragraph\</p> |
| \<div>\</div> | Defines a generic container that is generally used to group block-level elements. It allows you to apply CSS styles to multiple elements at the same time.| \<div style='color:#0000FF'>\<h3>This is the heading in a div element\</h3>\</div> |
| \<i>\</i> | Displays text in italic style.| \<p>\<i>This is in italic style\</i>\</p> |
| \<u>\</u> | Defines text that should be styled differently or have a non-textual annotation, such as misspelt words or a proper name in Chinese text. It is recommended that you avoid using the \<u> tag where it could be confused with a hyperlink.| \<p>This is an underlined paragraph\</p>|
| \<style>\</style> | Used to embed CSS within an HTML document.| \<style>h1{color:red;}p{color:blue;}\</style> |
| style | Defines the inline style of an element and is placed inside the tag. Use quotation marks (') to separate the styling text and use semicolons (;) to separate styles, for example, **style='width: 500px;height: 500px;border: 1px solid;margin: 0 auto;'**.| \<h1 style='color:blue;text-align:center'>This is a heading\</h1>\<p style='color:green'>This is a paragraph\</p> |
| \<script>\</script> | Used to embed or reference a client-side script, such as JavaScript.| \<script>document.write("Hello World!")\</script> |
## Example
```
@Entry
@Component
struct RichTextExample {
@State data: string =' <h1 style='text-align: center;'>h1 heading</h1>
<h1 style='text-align: center;'><i>h1 italic</i></h1>
<h1 style='text-align: center;'><u>h1 underlined</u></h1>
<h2 style='text-align: center;'>h2 heading</h2>
<h3 style='text-align: center;'>h3 heading</h3>
<p style='text-align: center;'>Regular paragraph</p> <hr/>
<div style='width: 500px;height: 500px;border: 1px solid;margin: 0auto;'>
<p style='font-size: 35px;text-align: center;font-weight: bold; color: rgb(24,78,228)'>Font size: 35px; line height: 45px</p>
<p style='background-color: #e5e5e5;line-height: 45px;font-size: 35px;text-indent: 2em;'>
This is a paragraph. This is a paragraph. This is a paragraph. This is a paragraph. This is a paragraph. This is a paragraph. This is a paragraph. This is a paragraph. This is a paragraph.
This is a paragraph.</p></div>'
build() {
Flex({direction: FlexDirection.Column,alignItems: ItemAlign.Center,
justifyContent: FlexAlign.Center }){
RichText(this.data)
.onStart(()=>{
console.info("RichText onStart")
})
.onComplete(()=>{
console.info("RichText onComplete")
})
}
}
}
```
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