表格：
<el-table ref="tablestu" v-bind:data="tablestu.items" size="mini" fit stripe border
v-on:selection-change="selstuchange"
style="margin:1px;" :height="tablestu.height">
<el-table-column type="selection" align="center"></el-table-column>
<el-table-column label="" prop="rowid" width="50" align="center"></el-table-column>
<el-table-column label="学期" prop="term" width="100" align="center"></el-table-column>
<el-table-column label="开课单位" prop="dptname" width="200" header-align="center"></el-table-column>
<el-table-column label="课程代码" prop="courseid" width="100" align="center"></el-table-column>
<el-table-column label="课程序号" prop="courseno" width="120" align="center"></el-table-column>
<el-table-column label="课程名称" prop="cname" width="300" header-align="center" show-overflow-tooltip></el-table-column>
<el-table-column label="任课教师" prop="name" width="100" align="center"></el-table-column>
<el-table-column label="学号" prop="stid" width="120" align="center"></el-table-column>
<el-table-column label="姓名" prop="stname" width="100" align="center"></el-table-column>
<el-table-column label="分数" prop="score" width="80" align="center"></el-table-column>
<el-table-column label="成绩类别" prop="stype" width="110" align="center">
<template slot-scope="scope">
<div v-if="!scope.row.iseditstype">
<a href="#" v-on:click="scope.row.iseditstype=true;selstu.currentid=scope.row.id">{{scope.row.stype}}</a>
</div>
<div v-else>
<el-select v-model="scope.row.stype" size="mini" placeholder="请选择" style="width:100px;"
v-on:change="stustypechange"
v-on:visible-change="closestustype">
<el-option v-for="item in sstype"
:key="item.value"
:label="item.label"
:value="item.value">
</el-option>
</el-select>
</div>
</template>
</el-table-column>
<el-table-column label="考试类别" prop="ttype" width="80" align="center"></el-table-column>
</el-table>
data中：
selstu: {
stus: [],
stype: '',
ttype: '',
currentid: ''
}相关方法：
srh: function () {
var that = this;
var p = this.formsrh;
p.rows = this.tablestu.rows;
p.page = this.tablestu.page;
$.post('/admin_areas/examination/ListBuKaoStu', p, function (res) {
accecpResult(res, function () {
res.data.rows.forEach(item => {
item.iseditstype = false;
item.iseditttype = false;
})
that.tablestu.items = res.data.rows;
that.tablestu.total = res.data.total;
})
})
},
stustypechange: function (val) {
var p = {
id: this.selstu.currentid,
stype: val
}
var that = this;
$.post('/admin_areas/examination/editbkstype', p, function (res) {
accecpResult(res, function () {
that.tablestu.items.forEach(item => {
if (item.id == that.selstu.currentid) {
item.iseditstype = false;
}
})
}, function () {
that.$message.error(res.data);
})
})
},
closestustype: function (val) {
if (val == false) {
this.tablestu.items.forEach(item => {
if (item.id == this.selstu.currentid) {
item.iseditstype = false;
}
})
}
},思路说明：
1、srh方法获取数据中，将各行数据增加属性iseditstype ，以此属性来切换正常显示与下拉框显示。
2、正常显示时，显示一个链接，点击后修改该行的iseditstype值，并记录下该行id，代码： {{scope.row.stype}} 3、下拉框显示时，处理两个事件：visible-change和change，前者是下拉面板显示状态，后者是值发送改变
下拉面板隐藏时，修改该行的iseditstype值为false，改为正常显示。
值改变时，向后端发送修改请求，响应成功后修改isedittype的值。
通过selstu.currentid来确定当前操作的行id
