首先，封装类，理解清楚你需要用的哪几个变量，然后声明，然后在类里封装函数，其中，constructor就是存放初始变量的地方。
这里还是datatable的处理解决，
constructor(table) { ???????this.data = {}; ???????this.table = table ???}inittable(table) { ???????for (var i = 0; i < this.data.rowdata.length; i++) { ???????????this.data.rowdata[i].submit_status = 0 ???????} ???????this.data.col_define[this.data.col_define.length] = { ???????????‘targets‘: this.data.col_define.length, ???????????‘title‘: ‘上传状态‘, ???????????‘data‘: ‘submit_status‘, ???????????‘render‘: function (data, type, full, meta) { ???????????????if (1 === data) { ???????????????????return ‘上传成功‘ ???????????????} else if (2 === data) { ???????????????????return ‘上传失败‘ ???????????????} else { ???????????????????return ‘未上传‘ ???????????????} ???????????} ???????}; ???????console.log(this.data.col_define); ???????console.log(this.data.rowdata); ???????this.table = $(table).DataTable({ ???????????‘language‘: lan, ???????????"dom": ‘lB<"top"f><"toolbar">rt<"bottom"ip><"clear">‘, ???????????"paging": true, ???????????"lengthChange": true, ???????????"info": true, ???????????‘destroy‘: true, ???????????"deferRender": true, ???????????‘columns‘: this.data.col_define, ???????????‘data‘: this.data.rowdata, ???????}) ???}在功能里配置表格的配置，然后之前的res结果中的data改成this即可
success: function (res) { ???????????if (‘ok‘ === res[‘code‘]) { ???????????????if (department === 1) { ???????????????????salary_table = $(‘#primary_excel_table‘) ???????????????} else if (department === 2) { ???????????????????salary_table = $(‘#middle_excel_table‘) ???????????????} else if (department === 3) { ???????????????????salary_table = $(‘#logistics_excel_table‘) ???????????????} ???????????????alert(‘解析完成!‘); ???????????????console.log(‘返回数据是‘, res[‘data‘]); ???????????????sal.data = res[‘data‘]; ???????????????console.log(sal.data); ???????????????sal.inittable(modal_table);这样子，就能利用类，来动态定义表格，而且submit里也直接配置了，不用再用之前博客里的render功能，
还有就是，字符串的拼接
comcat_string(salary_info) { ???????var items = []; ???????Object.keys(salary_info).forEach(function (key) { ???????????if (key !== ‘名字‘ && key !== ‘部门‘ && key !== ‘身份证‘ && key !== ‘submit_status‘) { ???????????????items.push([key, salary_info[key]].join(‘:‘)); ???????????} ???????}); ???????return items.join(‘|‘) ???}用到forEach方法，JS遍历可以查询的到方法类。
再者，就是ajax中，如果想要调用this下的变量,需要提前在外部声明
_this=this
然后类似
???_this.data.rowdata[a][‘submit_status‘] = 1;
自己看的，不喜勿喷，前端实习第11天，我也忘了具体，反正差不多是11把，头很痛。。。。啦啦啦啦啦德玛西亚
对象的使用处理，作用域的和ajax中this的理解
原文地址：https://www.cnblogs.com/qq946487854/p/10196474.html