el-table 动态添加删除 -- 鼠标移入移出显隐删除图标

 <el-table class="list-box" :data="replaceDataList" border><el-table-column label="原始值" prop="original" align="center" ><template slot-scope="scope"><div @mouseenter="showClickIcon = scope.$index" @mouseleave="showClickIcon = null"><el-input style="width:80%" v-model="scope.row.original" placeholder="输入原值" /></div></template></el-table-column><el-table-column label="替换为" prop="replace" align="center" ><template slot-scope="scope"><div @mouseenter="showClickIcon = scope.$index" @mouseleave="showClickIcon = null"><div style="display:inline-block;width:80%" ><el-input v-model="scope.row.replace" placeholder="输入替换值" /></div><span v-if="showClickIcon == scope.$index" style="margin-left:10px"><i @click="delRow(scope.$index)" class="el-icon-delete"></i></span></div></template></el-table-column>
</el-table><div class="addclass"><span @click="addRow">+ 添加</span>
</div>

// 增加一行
addRow() {const row = {original: '',replace: '',};this.replaceDataList.push(row);
},
// 删除指定行
delRow(index) {this.replaceDataList.splice(index, 1);
},