<template> <div> <el-button type="primary" icon="el-icon-plus" @click="addRow">新增</el-button> <el-table :data="tableData" style="width: 100%"> <el-table-column prop="name" label="姓名"></el-table-column> <el-table-column prop="age" label="年龄"></el-table-column> <el-table-column label="操作"> <template slot-scope="scope"> <el-button type="text" size="small" @click="editRow(scope.$index)">编辑</el-button> <el-button type="text" size="small" @click="deleteRow(scope.$index)">删除</el-button> </template> </el-table-column> </el-table> <el-dialog :visible.sync="dialogVisible" title="编辑" :close-on-click-modal="false"> <el-form :model="form" label-width="80px"> <el-form-item label="姓名"> <el-input v-model="form.name"></el-input> </el-form-item> <el-form-item label="年龄"> <el-input v-model.number="form.age"></el-input> </el-form-item> </el-form> <div slot="footer" class="dialog-footer"> <el-button @click="dialogVisible = false">取 消</el-button> <el-button type="primary" @click="saveRow">确 定</el-button> </div> </el-dialog> </div></template><script>export default { data() { return { tableData: [ { name: '张三', age: 18 }, { name: '李四', age: 22 }, { name: '王五', age: 25 }, ], dialogVisible: false, form: { name: '', age: 0, }, editIndex: -1, } }, methods: { addRow() { this.form.name = '' this.form.age = 0 this.dialogVisible = true this.editIndex = -1 }, editRow(index) { this.form.name = this.tableData[index].name this.form.age = this.tableData[index].age this.dialogVisible = true this.editIndex = index }, deleteRow(index) { this.tableData.splice(index, 1) }, saveRow() { if (this.editIndex === -1) { // 新增 this.tableData.push({ name: this.form.name, age: this.form.age, }) } else { // 修改 this.tableData.splice(this.editIndex, 1, { name: this.form.name, age: this.form.age, }) } this.dialogVisible = false }, },}</script>这段代码中editIndex默认是几?如何变化?
时间: 2023-06-23 08:09:56 浏览: 74
editIndex默认是-1,它在addRow和editRow方法中被赋值。在addRow方法中,editIndex被设置为-1,表示新增一行数据;在editRow方法中,editIndex被设置为当前点击的行的索引,表示编辑该行数据。当点击确定按钮保存数据时,根据editIndex是否为-1来判断是新增还是修改操作。
相关问题
指出这段代码的错误 <template> <div class="manage"> <el-dialog title="提示" :visible.sync="dialogVisible" width="30%"> <span>这是一段信息</span> <span slot="footer" class="dialog-footer"> <el-button @click="dialogVisible = false">取 消</el-button> <el-button type="primary" @click="dialogVisible = false">确 定</el-button> </span> </el-dialog> </div> <div class="manage-header"> <el-button type="primary" @click="dialogVisible = true">+ 新增</el-button> </div> </template> <script> export default { // name: "Emp", data() { return { dialogVisible: false, primary:"", }; } } </script> <style scoped></style>
这段代码没有明确引入 Element UI 组件库,应该在 `<script>` 标签中添加 `import` 语句引入 Element UI 组件库。另外,代码中的 `el-dialog` 组件未被正确地包裹在 `el-button` 组件内,应该将 `<span slot="footer" class="dialog-footer">` 标签移动到 `el-dialog` 组件标签内,并将其中的内容用 `el-button` 组件包裹。修改后的代码如下:
```
<template>
<div class="manage">
<el-dialog title="提示" :visible.sync="dialogVisible" width="30%">
<span>这是一段信息</span>
<template slot="footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="dialogVisible = false">确 定</el-button>
</template>
</el-dialog>
</div>
<div class="manage-header">
<el-button type="primary" @click="dialogVisible = true">+ 新增</el-button>
</div>
</template>
<script>
import { ElButton, ElDialog } from 'element-ui';
export default {
components: {
ElButton,
ElDialog,
},
data() {
return {
dialogVisible: false,
primary: "",
};
},
};
</script>
<style scoped></style>
```
指出这段代码的错误 <template> <!-- 输入框--> <!-- <div style="margin: 10px 0"> <el-input type="text" placeholder="请输入名称" style="width: 200px" suffix-icon="el-icon-search" class="ml-5" v-model="username"></el-input> <el-input type="text" placeholder="请输入邮箱" style="width: 200px" suffix-icon="el-icon-message" class="ml-5" v-model="email"></el-input> <el-input type="text" placeholder="请输入地址" style="width: 200px" suffix-icon="el-icon-position" class="ml-5" v-model="address"></el-input> <el-button class="ml-5" type="primary">搜索</el-button> <el-button type="warning">重置</el-button> </div> --> <div class="manage"> <el-dialog title="提示" :visible.sync="dialogVisible" width="30%"> <span>这是一段信息</span> <span slot="footer" class="dialog-footer"> <el-button @click="dialogVisible = false">取 消</el-button> <el-button type="primary" @click="dialogVisible = false">确 定</el-button> </span> </el-dialog> </div> <div class="manage-header"> <el-button type="primary" @click="dialogVisible = true">+ 新增</el-button>> </div> </template> <script> export default { // name: "Emp", data() { return { dialogVisible: false, primary:"", }; } } </script> <style scoped></style>
这段代码的错误在于多了一个大于号(>):
```
<el-button type="primary" @click="dialogVisible = true">+ 新增</el-button>>
```
需要将它改为:
```
<el-button type="primary" @click="dialogVisible = true">+ 新增</el-button>
```
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