How to edit and cancel tables in Vue?

How to edit and cancel tables in Vue?

In Vue development, it is often necessary to process the editing and modification of tables, so it is particularly important to edit and cancel tables. Here, this article will introduce how to edit and cancel tables in Vue.

1. Binding of table data

In the table, we first need to render the data into the table, so the data needs to be bound. In Vue, data traversal and rendering can be achieved by using the v-for directive.

For example, define a sample data in data as follows:

data() {
  return {
    tableData: [
      {name: '张三', age: 20},
      {name: '李四', age: 22},
      {name: '王五', age: 25},
    ],
    editIndex: -1,
  }
}

Among them, a tableData array is defined, which stores three objects, each object represents a row in the table data. editIndex represents the table row currently being edited, and the initial value is -1, indicating the unedited state.

In the table, you can use the following code to render data:

<table>
  <tr v-for="(item, index) in tableData" :key="index">
    <td>{{ item.name }}</td>
    <td>{{ item.age }}</td>
    <td>
      <button @click="editRow(index)">编辑</button>
    </td>
  </tr>
</table>

In the above code, use the v-for instruction to loop through the data in the tableData array, and use the :key attribute to specify each element unique identifier. At the same time, each row in the table has an "Edit" button. Clicking this button will put the current row into editing status.

2. Switching the editing state of the table

In Vue, you can record the index of the row currently being edited by defining an editIndex variable. When the user clicks the "Edit" button, the index of the row where the button is located is set to the value of editIndex, and the data in the row in the table is displayed in an editable state. When the user clicks the Save or Cancel button, resets the value of editIndex to -1, indicating that no rows are currently being edited.

In the code, you can use the following code to switch the editing state:

methods: {
  // 编辑表格行
  editRow(index) {
    if (this.editIndex !== -1) {
      // 如果已经在编辑状态，则提示用户
      alert('请先完成当前行的编辑');
      return;
    }
    // 将该行的所以设置为编辑状态
    this.editIndex = index;
  },
  // 保存表格行
  saveRow() {
    // 执行保存操作
    // ...

    // 重置编辑状态
    this.editIndex = -1;
  },
  // 取消表格行
  cancelRow() {
    // 重置编辑状态
    this.editIndex = -1;
  }
}

In the above code, the editRow method is used to set the editing state of the table row, and the saveRow method is used to save the result of table editing. , the cancelRow method is used to cancel the table editing operation.

3. Editing of table rows

In the table, when entering the editing state, the data of the table rows needs to be displayed in an editable state. In Vue, this effect can be achieved by using form elements such as input and select.

For example, when displaying the name and age columns of data in a table row, you can use the following code:

<tr v-for="(item, index) in tableData" :key="index">
  <td>
    <input type="text" :value="editIndex === index ? item.name : item.name">
  </td>
  <td>
    <input type="text" :value="editIndex === index ? item.age : item.age">
  </td>
  <td>
    <button @click="editRow(index)">编辑</button>
    <button @click="saveRow()">保存</button>
    <button @click="cancelRow()">取消</button>
  </td>
</tr>

In the above code, the input element is used to implement the name and age columns of data. Editable status. Use three buttons to switch the table editing state. The "Save" button is used to save the editing results, store the data in the background server or update the data in the local state.

Summary

Through the above steps, we can edit and cancel the table in Vue. In actual development, editing functions can be customized according to needs, such as implementing customized editing functions for table cells, adding checksum prompts for table data, etc.

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