el-table点击单元格切换成可输入状态el-input

Posted 2022-08-07 安之ccy

思路：

1.使用el-table提供的scope，可获取被点击行的索引，行数据，列数据等
2.在template中写好el-input和p标签，不点击单元格时显示p标签，展示默认数据；点击时显示el-input标签，可编辑
3.输入框获取焦点时，保存当前数据；修改数据后，与原数据比较，若有变动，失去焦点后提示”修改成功“

效果：

代码：

html：

<div id="app">
    <el-table :data="dataList" style="width: 100%;" size="small">
        <el-table-column label="序号" width="140" width="60" prop="num" v-model="dataList.num"></el-table-column>
        <el-table-column label="名称" width="120">
            <!-- 关键代码 -->
            <template slot-scope="scope">
                <el-input v-if="scope.row.isnameSelected" v-model="scope.row.name"
                    @focus="focusEvent(scope.row,scope.$index,scope.column)"
                    @blur="blurEvent(scope.row,scope.$index,scope.column)" v-focus></el-input>
                <p @click="cellClick(scope.row, scope.column)" v-else>scope.row.name</p>
            </template>
        </el-table-column>
        <el-table-column label="年龄" width="120">
            <!-- 通过isageSelected显示或隐藏 -->
            <template slot-scope="scope">
                <el-input v-if="scope.row.isageSelected" v-model="scope.row.age"
                    @focus="focusEvent(scope.row,scope.$index,scope.column)"
                    @blur="blurEvent(scope.row,scope.$index,scope.column)" v-focus></el-input>
                <p @click="cellClick(scope.row, scope.column)" v-else>scope.row.age</p>
            </template>
        </el-table-column>
        <el-table-column label="金额" width="120">
            <template slot-scope="scope">
                <!-- 通过issalSelected显示或隐藏 -->
                <el-input v-if="scope.row.issalSelected" v-model="scope.row.money"
                    @focus="focusEvent(scope.row,scope.$index,scope.column)"
                    @blur="blurEvent(scope.row,scope.$index,scope.column)" v-focus></el-input>
                <p @click="cellClick(scope.row, scope.column)" v-else>scope.row.money</p>
            </template>
        </el-table-column>
    </el-table>
</div>

data：

data: 
    // 需要展示的数据，模拟从接口或组件传递过来的值
    dataList: [
         name: "测试1", age: 24, num: 10010, money: "1200" ,
         name: "测试2", age: 24, num: 10011, money: "1200" ,
         name: "测试3", age: 24, num: 10012, money: "1200" ,
         name: "测试4", age: 24, num: 10013, money: "1200" 
    ]

自定义指令focus：

//自定义指令
directives: 
    focus: 
        inserted: function (el) 
            el.querySelector('input').focus()
        
    

methods：

修改数据，辅助每列单元格被选中时的隐藏与显示

//请求接口
getList() 
    //遍历，给每项数据添加上某列是否被选中的flag，需要改成可修改的列数都要添加flag，且与上面v-if的一致
    this.dataList = this.dataList.map((item) => 
        return  ...item, isnameSelected: false, isageSelected: false, issalSelected: false 
    );

由于我的数据是自定义的，不由接口返回和组件传递而来，所以数据的修改设置在created阶段

created() 
    this.getList()

点击单元格：

//点击文本触发，显示input框，隐藏p标签
cellClick(row, column) 
    if (column.label == "名称") 
        row.isnameSelected = !row.isnameSelected
     else if (column.label == "年龄") 
        row.isageSelected = !row.isageSelected
     else if (column.label == "金额") 
        row.issalSelected = !row.issalSelected
    

点击输入框，获得焦点时

//点击输入框聚焦，存储当前值
focusEvent(row, index, column) 
    if (column.label == "名称") 
        row.oldName = row.name
     else if (column.label == "年龄") 
        row.oldAge = row.age
     else if (column.label == "金额") 
        row.oldSal = row.money
    

完成输入，点击其他处，失去焦点：

//输入框失去焦点触发,此处用提示框提示修改
blurEvent(row, curIndex, column) 
    if (column.label == "名称") 
        row.isnameSelected = !row.isnameSelected
        if (row.name !== row.oldName) 
            this.$message(
                message: '修改成功',
                type: 'success',
                duration: 1000
            )
        
     else if (column.label == "年龄") 
        row.isageSelected = !row.isageSelected
        if (row.age !== row.oldAge) 
            this.$message(
                message: '修改成功',
                type: 'success',
                duration: 1000
            )
        
     else if (column.label == "金额") 
        row.issalSelected = !row.issalSelected
        if (row.money !== row.oldSal) 
            this.$message(
                message: '修改成功',
                type: 'success',
                duration: 1000
            )
        
    

app组件完成代码

    <script>
        var vm = new Vue(
            el: "#app",
            data: 
                // 需要展示的数据，模拟从接口或组件传递过来的值
                dataList: [
                     name: "测试1", age: 24, num: 10010, money: "1200" ,
                     name: "测试2", age: 24, num: 10011, money: "1200" ,
                     name: "测试3", age: 24, num: 10012, money: "1200" ,
                     name: "测试4", age: 24, num: 10013, money: "1200" 
                ]
            ,

            created() 
                this.getList()
            ,
            //自定义指令
            directives: 
                focus: 
                    inserted: function (el) 
                        el.querySelector('input').focus()
                    
                
            ,
            methods: 
                getList() 
                    //遍历，给每项数据添加上某列是否被选中的flag，需要改成可修改的列数都要添加flag，且与上面v-if的一致
                    this.dataList = this.dataList.map((item) => 
                        return  ...item, isnameSelected: false, isageSelected: false, issalSelected: false 
                    );
                ,
                //点击输入框聚焦，存储当前值
                focusEvent(row, index, column) 
                    if (column.label == "名称") 
                        row.oldName = row.name
                     else if (column.label == "年龄") 
                        row.oldAge = row.age
                     else if (column.label == "金额") 
                        row.oldSal = row.money
                    
                ,

                //输入框失去焦点触发,此处用提示框提示修改
                blurEvent(row, curIndex, column) 
                    if (column.label == "名称") 
                        row.isnameSelected = !row.isnameSelected
                        if (row.name !== row.oldName) 
                            this.$message(
                                message: '修改成功',
                                type: 'success',
                                duration: 1000
                            )
                        
                     else if (column.label == "年龄") 
                        row.isageSelected = !row.isageSelected
                        if (row.age !== row.oldAge) 
                            this.$message(
                                message: '修改成功',
                                type: 'success',
                                duration: 1000
                            )
                        
                     else if (column.label == "金额") 
                        row.issalSelected = !row.issalSelected
                        if (row.money !== row.oldSal) 
                            this.$message(
                                message: '修改成功',
                                type: 'success',
                                duration: 1000
                            )
                        
                    
                ,

                //点击文本触发，显示input框，隐藏p标签
                cellClick(row, column) 
                    if (column.label == "名称") 
                        row.isnameSelected = !row.isnameSelected
                     else if (column.label == "年龄") 
                        row.isageSelected = !row.isageSelected
                     else if (column.label == "金额") 
                        row.issalSelected = !row.issalSelected
                    
                
            

        );
    </script>