How to implement drawer effect in uniapp

How to implement the drawer effect in uniapp

The drawer effect means that by sliding the page or clicking a button, the page slides out from one side or bottom to display additional content. In uniapp, we can use the uni-ui component library or custom components to achieve the drawer effect. I will introduce these two methods separately below.

1. Use the uni-ui component library to achieve the drawer effect:

uni-ui is a set of Vue.js-based component libraries officially provided by uniapp, providing a wealth of components for developers use. It contains the drawer component uni-drawer, which we can use to quickly achieve the drawer effect.

First, we need to introduce the uni-ui component library into the uniapp project. In HBuilderX, open the project, right-click and select "Update Plugin", search for and install the uni-ui plug-in.

Next, we introduce the uni-drawer component into the page where the drawer effect needs to be used, and use v-model to bind the state of whether the drawer is expanded. The code is as follows:

<template>
  <view>
    <button @click="toggleDrawer">打开抽屉</button>
    <uni-drawer v-model="drawerOpened">
      <!-- 抽屉内容 -->
      <view>抽屉内容</view>
    </uni-drawer>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        drawerOpened: false  // 抽屉展开状态
      }
    },
    methods: {
      toggleDrawer() {
        this.drawerOpened = !this.drawerOpened;
      }
    }
  }
</script>

In the above code, we use a button to control the expansion and closing of the drawer. By clicking the button, we call the toggleDrawer method to switch the expansion state of the drawer. The drawer content can be customized inside the <uni-drawer></uni-drawer> tag.

2. Customize components to achieve the drawer effect:

If you don’t want to use the uni-ui component library, you can also customize components to achieve the drawer effect.

First, we create a Drawer component in the components directory. Define a data attribute drawerOpened in the Drawer component to represent the expanded state of the drawer, and define a toggleDrawer method to toggle the expanded state of the drawer. The code is as follows:

<template>
  <view>
    <button @click="toggleDrawer">打开抽屉</button>
    <view class="drawer" :class="{ 'opened': drawerOpened }">
      <!-- 抽屉内容 -->
      <slot></slot>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        drawerOpened: false  // 抽屉展开状态
      }
    },
    methods: {
      toggleDrawer() {
        this.drawerOpened = !this.drawerOpened;
      }
    }
  }
</script>

<style scoped>
  .drawer {
    width: 300px;
    height: 100vh;
    background-color: #fff;
    transition: transform 0.3s;
    transform: translateX(-100%);
  }
  .drawer.opened {
    transform: translateX(0);
  }
</style>

In the above code, we use a button to control the expansion and closing of the drawer, and switch the expansion state of the drawer by clicking the button to call the toggleDrawer method. Drawer content can be added in the <slot></slot> tag.

Finally, in the page where the drawer effect is required, use the Drawer component and add the drawer content. The code is as follows:

<template>
  <view>
    <Drawer>
      <!-- 抽屉内容 -->
      <view>抽屉内容</view>
    </Drawer>
  </view>
</template>

<script>
  import Drawer from '@/components/Drawer.vue';
  
  export default {
    components: {
      Drawer
    }
  }
</script>

In the above code, we introduced the custom Drawer component and added the drawer content inside the <drawer></drawer> tag.

The above are two methods to achieve the drawer effect in uniapp. You can choose the appropriate method to achieve it according to your own needs. Whether you use the uni-ui component library or custom components, you can easily achieve beautiful drawer effects and improve user experience.

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