根据vote_vid遍历内容 - 前端与后端交互

let vote_vid = 0;$\n $("body").on('click','#dz',function () {$\n let subject_sid = "";$\n var subject_stype = $("#th").val();$\n var subject_scontent = $("#tmmc").val();$\n $.ajax({$\n url: "/getSubject",$\n type: "get",$\n dataType: "json",$\n data: {$\n vote_vid: vote_vid,$\n subject_stype: subject_stype,$\n subject_scontent: subject_scontent$\n },$\n success: function (data) {$\n for (let i = 0; i < data.length; i++) {$\n subject_sid = data[i].subject_sid;$\n $("#th").val(data[i].subject_stype);$\n $("#tmmc").val(data[i].subject_scontent);$\n } $\n } $\n });$\n });如何根据传过来的vote_vid 进行遍历内容：根据传过来的vote_vid进行遍历，可以通过将vote_vid作为参数传递给后端接口，然后在后端根据该参数进行遍历操作。具体步骤如下：$\n$\n1. 在前端代码中，将vote_vid作为参数传递给后端接口：$\njavascript$\n$.ajax({$\n url: "/getSubject",$\n type: "get",$\n dataType: "json",$\n data: {$\n vote_vid: vote_vid,$\n subject_stype: subject_stype,$\n subject_scontent: subject_scontent$\n },$\n success: function (data) {$\n // 遍历返回的数据$\n for (let i = 0; i < data.length; i++) {$\n subject_sid = data[i].subject_sid;$\n $("#th").val(data[i].subject_stype);$\n $("#tmmc").val(data[i].subject_scontent);$\n } $\n } $\n});$\n$\n$\n2. 在后端接口中，根据传递的vote_vid参数进行遍历操作，并将结果返回给前端：$\njavascript$\napp.get('/getSubject', function(req, res) {$\n var vote_vid = req.query.vote_vid;$\n // 根据vote_vid进行遍历操作，获取相关数据$\n // ...$\n // 将结果返回给前端$\n res.json(data);$\n});$\n$\n$\n这样，前端通过ajax请求将vote_vid传递给后端接口，后端接口根据该参数进行遍历操作，然后将结果返回给前端进行处理。