How to customize the table in vue

Vue is a lightweight framework that is widely used in web development. In Vue, developers can easily customize various UI components, such as tables, lists, etc. This article will introduce how to use Vue to customize tables.

1. The basic idea of ​​Vue’s custom table

The basic idea of ​​Vue’s custom table is to use the componentization feature of Vue to split the table into separate components, and use data binding and Event processing to implement data rendering and interactive functions of tables.

2. Table structure design

In Vue, the structure design of custom tables is very flexible. A common way is to use the following structure:

<template>
  <table>
    <thead>
      <tr>
        <th v-for="(header, index) in headers">{{ header }}</th>
      </tr>
    </thead>
    <tbody>
      <tr v-for="(item, index) in items" v-bind:key="index">
        <td v-for="(value, key) in item">{{ value }}</td>
      </tr>
    </tbody>
  </table>
</template>

In this structure, the table is composed of two parts: header and table body. The header consists of thead tag and th tag, and the column names of the table header are rendered based on the key names in the table data. The table body consists of the tbody tag and the tr and td tags. Each row and column in the table data is iterated through the v-for instruction. In this way, we can use the above basic templates to automatically generate tables.

3. The idea of ​​implementing tables with Vue components

The idea of ​​implementing tables with Vue components is to bind the structure and data of the table into a component to implement the style and interaction logic of the table.

1. Transfer of table data

In Vue, you can use the props attribute to pass table data to sub-components. Here, props, data, computed and other attributes are usually used to set data.

<script>
  export default {
    name: 'Table',
    props: {
      headers: Array,
      items: Array
    },
    data() {
      return {
        sortedHeaders: []
      }
    },
    computed: {
      sortedItems() {
        return this.sortBy([...this.items], [...this.sortedHeaders])
      }
    },
  }
</script>

In this code snippet, we define a Table component and pass the headers and items properties of the table to the sub-component. Then a sortedHeaders array is defined in the component to store the sorting status of the table, and the sorting function sortedItems() is defined in computed. This function uses the sortBy() method to implement sorting and returns the sorted tabular data.

2. Rendering logic of the table

Component rendering usually uses the template tag, and uses v-bind, v-on and other instructions to bind data and events to the component.

<template>
  <table>
    <thead>
      <tr>
        <th v-for="(header, index) in headers"
            v-bind:key="header"
            v-on:click="sortTable(header)">
          {{ header }} {{ getSortIcon(header) }}
        </th>
      </tr>
    </thead>
    <tbody>
      <tr v-for="(item, index) in sortedItems" v-bind:key="index">
        <td v-for="(value, key) in item">{{ value }}</td>
      </tr>
    </tbody>
  </table>
</template>

Here, we use the v-for instruction to render each column of the table, and define a sortTable() function to implement the sorting function. At the same time, we also use the getSortIcon() function to display the icon of the table sorting status.

3. Event processing of the table

Finally, we need to implement the event processing logic of the table in the Vue component. The v-on instruction and event processing function are usually used here to implement related processing.

<script>
  export default {
    name: 'Table',
    props: {
      headers: Array,
      items: Array
    },
    data() {
      return {
        sortedHeaders: []
      }
    },
    computed: {
      sortedItems() {
        return this.sortBy([...this.items], [...this.sortedHeaders])
      }
    },
    methods: {
      sortTable(header) {
        if (this.sortedHeaders.includes(header)) {
          this.toggleSort(header)
        } else {
          this.sortedHeaders.push(header)
          this.doSort()
        }
      },
      toggleSort(header) {
        // 省略部分代码
      },
      doSort() {
        this.sortedItems.sort((a, b) => {
          // 省略部分代码
        })
      },
      getSortIcon(header) {
        // 省略部分代码
      },
    },
  }
</script>

Here, we define four event handling functions, sortTable(), toggleSort(), doSort() and getSortIcon(), to implement the sorting, reversal and icon display functions of the table.

To sum up, the process of customizing tables using Vue is very flexible and highly customizable. Through the componentization feature and the implementation of data and event binding, we can quickly implement the styles and interaction logic of various tables.

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