结合Element组件,scope中有三个参数(row,cow,$index)分别表示行内容、列内容、以及此行索引值,
table上绑定数组 :data="tableList"
<el-table :data="tableList"> </el-table>
添加一列,里面放上上移和下调两个按钮,并绑定上函数,将此行的索引值(scope.$index)作为参数,样式根据需求自己调整:
<el-button icon="el-icon-arrow-up" :disabled="scope.$index === 0" @click="upFieldOrder(scope.$index)"></el-button> <el-button icon="el-icon-arrow-down" :disabled="scope.$index === tableList.length - 1" @click="downFieldOrder(scope.$index)"></el-button>
直接使用下面这种方式是错误的,虽然tableList的值变了,但是不会触发视图的更新:
upFieldOrder (index) { let temp = this.tableList[index-1]; this.tableList[index-1] = this.tableList[index] this.tableList[index] = temp },
正确的上移函数:
upFieldOrder (index) { let temp = this.tableList[index-1]; Vue.set(this.tableList, index-1, this.tableList[index]) Vue.set(this.tableList, index, temp) },
同理,下移函数如下:
downFieldOrder (index) { let i = this.tableList[index+1]; Vue.set(this.tableList, index+1, this.tableList[index]) Vue.set(this.tableList, index, i) }
如此,前端的调整table顺序功能便做好了,我不是在每一次点击都与后台交互传入新Order,在页面销毁时,一并提交:
destroyed() { let param = { infos: [] } this.tableList.forEach((dataItem,index) => { param.infos.push({ 参数1: dataItem.值1, 参数1: dataItem.值2, 参数顺序: index }) }); // 调用后台,并传入 param changeTableOrder(param).then(res => { if(res.success=== true) { alert('顺序调整成功') } }) }