How does uniapp parse html strings

UniApp is a framework for rapid development of cross-platform applications, supporting the development and release of applications on iOS, Android, H5 and WeChat applets. Among them, HTML string is a common data format in UniApp development. Parsing HTML string can easily display rich text content on the page. This article will introduce how to parse HTML strings in UniApp.

1. Use the native innerHTML attribute

The simplest way to parse HTML strings is to directly use the innerHTML attribute of the HTML tag. Assign the HTML string to this attribute to display rich text. content. Here is a simple example:

<template>
  <view>
    <p v-html="htmlStr"></p>
  </view>
</template>

<script>
export default {
  data() {
    return {
      htmlStr: "<strong>UniApp</strong>是一款跨平台框架。"
    }
  }
}
</script>

In this example, the HTML string "<strong>UniApp</strong> is a cross-platform framework."is bound to On the v-html attribute of the p tag, the string is converted into an HTML tag through the innerHTML attribute, and finally the rich text content is displayed on the page.

2. Use third-party libraries to parse HTML strings

In addition to using the native innerHTML attribute to parse HTML strings, UniApp also supports using third-party libraries to parse HTML strings. For example, you can use the he library to convert HTML strings into plain text strings, and then display them through the text component in the page. The following is an example:

1. Install he library

Enter the following command in the console to install he library:

npm install he --save

2. Introduce he library

In the page that needs to use the he library, introduce the library through the import statement:

<template>
  <view>
    <text>{{ textStr }}</text>
  </view>
</template>

<script>
import he from 'he'

export default {
  data() {
    return {
      htmlStr: "<strong>UniApp</strong>是一款跨平台框架。"
    }
  },
  computed: {
    textStr() {
      return he.decode(this.htmlStr)
    }
  }
}
</script>

In this example, the he library is first introduced through the import statement, and then the HTML string Convert it into a plain text string through computed properties, and finally display the string through the text component on the page.

3. Use third-party components to parse HTML strings

In addition to using third-party libraries to parse HTML strings, UniApp also supports using third-party components to parse HTML strings. For example, you can use the wxParse component to convert an HTML string into the rich text format of a WeChat applet and then display it on the page. The following is an example:

1. Install wxParse component

Enter the following command in the console to install wxParse component:

npm install wxparse --save

2. Introduce wxParse component

In the page that needs to use the wxParse component, introduce the component through the import statement:

<template>
  <view>
    <wx-parse :content="htmlStr"></wx-parse>
  </view>
</template>

<script>
import WxParse from 'wxparse'

export default {
  data() {
    return {
      htmlStr: "<strong>UniApp</strong>是一款跨平台框架。"
    }
  },
  components: {
    wxParse: WxParse
  }
}
</script>

In this example, the wxParse component is first introduced through the import statement, and then the HTML string Convert it into the rich text format of the WeChat applet through the wx-parse component, and finally display the component on the page.

Summary

This article introduces three methods of parsing HTML strings in UniApp: using the native innerHTML attribute, using third-party libraries to parse HTML strings, and using third-party components to parse HTML strings. . Among them, using the native innerHTML attribute is the simplest, but there may be security risks; using a third-party library to parse HTML strings can convert HTML strings into plain text strings, which is suitable for most scenarios; using third-party components to parse HTML characters String can convert HTML strings into rich text formats of various platforms, which is suitable for scenarios where complex rich text content needs to be displayed.

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