UniApp implements the expansion and usage skills of WeChat applet native components

UniApp is a cross-platform application development framework developed based on Vue.js. When developing WeChat mini programs, we often need to use the native components of WeChat mini programs. This article will introduce how to extend and use WeChat applet native components in UniApp, and share some usage tips.

1. Expand the native components of the WeChat mini program

UniApp allows us to extend the native components of the WeChat mini program to support more functions and features. Let's take the example of extending the native navigation bar component of the WeChat applet as an example.

1. Create a new file wx-navbar.vue in the /components directory, and write the following code:

<template>
  <view>
    <text>这是扩展的导航栏组件</text>
  </view>
</template>

<script>
export default {
  name: 'WxNavbar',
  props: {
    title: {
      type: String,
      default: ''
    }
  }
}
</script>

<style scoped>
/* 样式定义 */
</style>

2. Use the extended navigation bar component in /pages/index/index.vue:

<template>
  <view>
    <wx-navbar title="首页"></wx-navbar>
    <!-- 其他内容 -->
  </view>
</template>

<script>
import WxNavbar from '@/components/wx-navbar.vue'

export default {
  components: {
    WxNavbar
  }
}
</script>

<style>
/* 样式定义 */
</style>

Through the above steps, we have successfully expanded the WeChat applet The native navigation bar component is used in the home page.

2. Usage skills

In addition to extending native components, UniApp also provides many tips for using native components of WeChat mini programs for developers to better use and master.

1. Using the native component library of the mini program

UniApp supports the direct use of the native component library of the WeChat mini program without additional development and integration. In the project configuration file /pages.json, we can reference the native components we need to use.

{
  "pages": [
    {
      "path": "pages/index/index",
      "style": {
        "navigationBarTitleText": "首页"
      },
      "usingComponents": {
        "button": "path/to/wechat/button"
      }
    }
  ]
}

Then use it directly in the vue file of the corresponding page:

<button></button>

2. Using the mini program component style

In UniApp, we can pass Introduce the style sheet of the mini program's native component to directly use its style.

<template>
  <view class="button-container">
    <button class="button">按钮</button>
  </view>
</template>

<style>
@import "path/to/wechat/button.wxss";

.button-container {
  /* 自定义样式 */
}

.button {
  /* 使用小程序组件样式 */
  @import "path/to/wechat/button.wxss";
}
</style>

Through the above methods, we can easily use the native components and styles of WeChat applet in UniApp.

Summary:

UniApp provides us with rich functions and techniques for extending and using the native components of WeChat mini programs. By extending native components and usage techniques, we can develop cross-platform applications more flexibly and efficiently. I hope this article can bring you some help and make you more comfortable when developing WeChat mini programs in UniApp.

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