vue+elementUI 点击下载txt文件

表单代码：

<el-table :data="joblistData" border style=" 99%" :height=winHeight>
                <el-table-column prop="aa" align="center" label="ID"></el-table-column>
                <el-table-column prop="aa" align="center" label="名字"></el-table-column>
                <el-table-column prop="aa" align="center" label="中文职称"></el-table-column>
                <el-table-column prop="aa" align="center" label="英文职称"></el-table-column>
                <el-table-column align="center" label="图片">
                    <template slot-scope="scope">
                        <img
                                v-if="scope.row.picture"
                                style=" 50px;height: 50px"
                                class="el-image__inner"
                                :src="scope.row.picture"
                                @click="onClickImg(scope.row.picture)"
                        />

                    </template>
                </el-table-column>

                <el-table-column fixed="right" label="操作" align="center">
                    <template slot-scope="scope">
                        <el-button
                                @click="updateJob(scope.row)"
                                type="warning"
                                size="small"
                        >修改</el-button>
                        <el-button
                            @click="getCode(scope.row)"
                            type="success"
                            style="background: #009688;"
                            size="small"
                        >查看代码</el-button>
                        <el-button
                            @click="downloadCode(scope.row)"
                            type="success"
                            size="small"
                        >下载代码</el-button>
                    </template>
                </el-table-column>
            </el-table>

点击下载按钮：

　　　　downloadCode(row){
　　　　　　//  文本内容
        let modelCode = '<div style="600px;height:180px;background-color:#EDEDEC;">
' +
          '    <div style="height:20px"></div>
' +
          '    <div style="190px;height:140px;margin-left: 35px; float:left;">
' +
          '        <div>
' +
          '            <label style="font-size: 20px"><b>'+ row.name + '</b></label>
' +  
          '    <div style="height:20px"></div>
' +
          '</div>  ............  '
        let export_blob = new Blob([modelCode]);
        let save_link = document.createElement("a");
        save_link.href = window.URL.createObjectURL(export_blob);
        save_link.download = row.name +'.txt';
        this.fakeClick(save_link);
      },
      fakeClick(obj) {
        let ev = document.createEvent("MouseEvents");
        ev.initMouseEvent(
          "click",true,false,window,0,0,0,0,0,false,false,false,false,0,null
        );
        obj.dispatchEvent(ev);
      },