Question

我不确定我是否正确地提出了这个问题。我正在动态构建网格（行，列）中的数据库记录的显示。一些单元格使用表单对象，我使用AJAX来帮助构建它们（select中的选项存储在db表中）。所以我的代码看起来像这样（AJAX调用的返回是完整的...设置：

...

//写单元格html if（d == 1）{ userdata + =“”+ thisitemarray [1] +“

”; 如果（d == 2）{

，则为else

                    //make ajax call to get departments
                    $.ajax({
                       type: "POST",
                       url: "lib/getDropDowns.php",
                       data: "thistable=departments&selecteditem=" + thisitemarray[1] + "&classnames=userdept userdatainput",
                       success: function(data){
                         userdata += "<p class=\"datacell department\">" + data + "</p>";
                       }
                  });

                 } else if (d == 3) {
                    userdata += "<p class=\"datacell bucket\"><input type=\"text\" value=\"" + thisitemarray[1] + "\" class=\"userbucket userdatainput\" dbid=\"" + dbid + "\"></p>";
                 } else if (d == 4) {
                    userdata += "<p class=\"datacell pubcode\"><input type=\"text\" value=\"" + thisitemarray[1] + "\" class=\"userpubcode userdatainput\" dbid=\"" + dbid + "\"></p>";
                 } else if (d == 5) {
                    userdata += "<p class=\"datacell area\"><input type=\"text\" value=\"" + thisitemarray[1] + "\" class=\"userarea userdatainput\" dbid=\"" + dbid + "\"></p>";
                 } else if (d == 6) {
                    userdata += "<p class=\"datacell hours\"><input type=\"text\" value=\"" + thisitemarray[1] + "\" class=\"userhours userdatainput\" dbid=\"" + dbid + "\"></p>";
                 } else if (d == 7) {
                    userdata += "<p class=\"datacell description\"><textarea class=\"userdesc\" dbid=\"" + dbid + "\">" + thisitemarray[1] + "</textarea></p>";
                 }//end d check 2

问题是这行代码：

success: function(data){
                         userdata += "<p class=\"datacell department\">" + data + "</p>";
                       }

未显示在我的页面上。我假设因为userdata被视为函数中的局部变量。如何将从AJAX传递的数据拉出到我的脚本中以便我可以使用它？

Answer 1

在循环之前添加一个计数器：

var counter = 0;

稍后将其用作ID生成器：

if (d === 1) { 
  userdata += "" + thisitemarray[1];
} else if (d === 2) { 
  var id = 'datacell_department_' + counter;
  counter++;
  userdata += "<p class=\"datacell department\" id=\""+id+"\"></p>";
  //make ajax call to get departments
  $.ajax({
    type: "POST",
    url: "lib/getDropDowns.php",
    data: "thistable=departments&selecteditem=" + thisitemarray[1] + "&classnames=userdept userdatainput",
    success: function(data){
      $('#'+id).html(data);
    }
  });
} else if (d === 3) {
  userdata += "...";
}

Answer 2

在查询设置中使用 async：false 参数

Answer 3

@Sergey G - 谢谢，照顾它。以下是其他人的代码示例：

function getWhatever()

{ var strUrl =“”; //你需要调用的URL var strReturn =“”;

jQuery.ajax（{ url：strUrl，success：function（html）{strReturn = html;}，async：false }）;

返回strReturn; }

JQuery：将从ajax函数返回的数据传递给变量

3 个答案: