Design and development practice of UniApp to realize table display and data filtering

UniApp is a cross-platform application framework developed based on Vue.js, which can quickly build multi-terminal applications. This article will introduce how to use UniApp to implement the design and development practice of table display and data filtering.

1. Design ideas

Before implementing the table display and data filtering functions, we need to clarify some design ideas first. First, we need to use a data collection to store the data in the table and display it on the page. Secondly, we need to set filtering conditions so that users can filter data according to their own needs. Finally, we need to implement dynamic display and update of data on the page.

2. Development practice

2.1 Data preparation

First, we need to prepare a data collection, which can be an array containing multiple objects. Each object represents a data record and contains several fields. For example, we can use a data collection similar to the following:

dataList: [
  { name: '张三', age: 18, gender: '男' },
  { name: '李四', age: 20, gender: '男' },
  { name: '王五', age: 22, gender: '女' },
  // more data...
]

2.2 Table display

Next, we can use the v-for directive on the page to traverse the data collection , and displayed in the table. We can create a <table> element and use the <tr> and <td> elements to render the rows and columns of the table. The code example is as follows:

<template>
  <table>
    <tr>
      <th>姓名</th>
      <th>年龄</th>
      <th>性别</th>
    </tr>
    <tr v-for="item in dataList" :key="item.name">
      <td>{{ item.name }}</td>
      <td>{{ item.age }}</td>
      <td>{{ item.gender }}</td>
    </tr>
  </table>
</template>

2.3 Data filtering

In order to implement the data filtering function, we can place an input box and a button on the page. The user enters filter conditions in the input box and clicks the button. The page will filter the data collection based on the filter conditions and re-render the table. The code example is as follows:

<template>
  <div>
    <input v-model="filterValue" type="text">
    <button @click="filterData">筛选</button>
  </div>
  <table>
    <!-- table rendering code... -->
  </table>
</template>

<script>
export default {
  data() {
    return {
      dataList: [
        // data list...
      ],
      filterValue: '' // filter input value
    }
  },
  methods: {
    filterData() {
      const filteredData = this.dataList.filter(item => {
        return item.name.includes(this.filterValue)
      })
      // update the data list with filtered data
      this.dataList = filteredData
    }
  }
}
</script>

2.4 Dynamic display and update of data

Finally, we can set an update function for the data collection and use a timer to regularly update the data in the data collection. In this way, the data displayed on the page can change dynamically. The code example is as follows:

methods: {
  updateData() {
    setInterval(() => {
      // update data randomly
      this.dataList.forEach(item => {
        item.age = Math.floor(Math.random() * 50 + 20)
      })
    }, 5000) // update data every 5 seconds
  }
},
mounted() {
  this.updateData()
}

3. Summary

Through the above design and development practices, we successfully used UniApp to implement the table display and data filtering functions. At the same time, we also implemented dynamic display and update of data. Through this example, we can see the power of UniApp, which can help us build cross-platform applications quickly and easily. I hope this article can provide you with some help in understanding the development of UniApp.

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