How to use uniapp paginator

With the rapid development of mobile Internet, the development of mobile applications has received more and more attention. Developing a good mobile application requires the support of a variety of technologies and frameworks. Among them, uniapp is an excellent development framework that is compatible with multiple platforms, saving developers time and costs. During the development process, it is a very common requirement to implement the paging function, and uniapp also provides a wealth of paginator components. This article will introduce how to use the uniapp paginator.

1. Introducing the paginator component

Before using the uniapp paginator, you first need to introduce the paginator component into the page. The method of introducing the paginator component in the vue file is as follows:

<template>
  <view>
    <!-- 分页器组件 -->
    <pagination :total="total" :page-size="pageSize" :current="currentPage" :show-total="true" @change="pageChange"></pagination>
  </view>
</template>

<script>
  import pagination from '@/components/pagination.vue';
  export default {
    components: { pagination },
    data() {
      return {
        total: 100, // 数据总条数
        pageSize: 10, // 每页显示的数据条数
        currentPage: 1, // 当前页码
      };
    },
    methods: {
      pageChange(e) {
        // 处理翻页的逻辑，比如异步请求接口获取数据
        console.log(e);
      },
    },
  };
</script>

In the above code, we first need to import the paginator component, and then define the total number of items total and the display per page in the data of the component. The amount of data pageSize and the current page number currentPage. Among them, total and pageSize are the results obtained in response to the data request, and currentPage defaults to 1. In the pagination tag, the values ​​of total, pageSize and currentPage are bound respectively, and the show-total attribute is defined to indicate the total number of displayed data. Among them, @change is the change event built into the pager component. When the page turning event is triggered, the pageChange function will be executed.

2. Handling paging events

In the previous step, we have introduced the paginator component and bound the page turning event in the component. After receiving the pager page turning event, we need to initiate a data request to the backend and render the data to the page based on the current page number and the number of data items displayed on each page. In the vue file, we usually define a method to handle page turning events, as follows:

pageChange(e) {
  // 处理翻页的逻辑，比如异步请求接口获取数据
  this.currentPage = e.detail.currentPage;
  this.getData();
},
getData() {
  const params = {
    page: this.currentPage,
    pageSize: this.pageSize,
  };
  // 异步请求后端接口获取数据
  // ...
},

In the above code, we first receive the page turning event in the pageChange function and update the value of currentPage to Current page number. Then, call the getData method to obtain the data corresponding to the current page number. In getData, we define the parameter params required by the request interface, which includes the current page number and the amount of data displayed on each page. The code for asynchronously requesting back-end data is written by yourself according to your actual situation.

3. Display paginator

Through the above steps, we have introduced and used the uniapp paginator component and can realize page turning operations. However, we also need to display a paginator on the page to let the user know which page they are currently on, and to visually see the total number of data items and the number of items displayed on each page. In the template of the vue file, we add the following code to display the paginator:

<!-- 分页器组件 -->
<pagination :total="total" :page-size="pageSize" :current="currentPage" :show-total="true" @change="pageChange"></pagination>

In the above code, we use the pagination tag to introduce the paginator component and bind total, pageSize, and currentPage , show-total and @change attributes. Through these properties, we can control the display effect of the pager, and can respond to page turning events to achieve infinite loading of data.

Summary:

Through the above introduction, we can find that the use of the uniapp paginator is not complicated. You only need to introduce components and bind related properties and events. When implementing the paging function, we need to pay attention to setting the number of data displayed on each page, handling page turning events and loading new data. At the same time, don’t forget to display the paginator on the page to allow users to intuitively understand the current data status.

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