数据表:实时添加额外的行吗? [英] Datatables: Adding an extra row on real time?

问题描述

我正在尝试在表加载后向其添加新行(因为我需要检索一些数据)，但是新行仅显示未定义".看起来像这样:

I am trying to add a new row to a table, after it is loaded (since I need to retrieve some data), but the new row just shows 'undefined'. It looks like this:

$('#example tr').each( function () {
                id = this.id.substr(4);
                var result2;
                if (id.length > 0) {
                    $.post('get_stuff.php', {id: id}, function(result) {
                        result2 = result;
                    }); 
                    oTable.fnOpen( this, result2, "info_row_");
                }
            } );

以上内容打开新行并在其中写入"undefined".但是，如果在fnOpen调用之前添加了alert(result2)，则结果将显示在警报中，然后写入该行.我该如何解决?

The above opens the new rows and writes 'undefined' in them. If, however, before the fnOpen call I add an alert(result2) the result is shown in the alert and then written to the row. How can I solve this?

推荐答案

您的$.post()请求是异步的.

因此，信息仍在被请求时被写入.

So the info is written while it is still being requested.

您可以添加:

$.ajaxSetup({async:false});或将.ajax()与async: false选项一起使用.

$.ajaxSetup({async:false}); before the .post() call or use .ajax() with async: false option.

.post()只是.ajax()

或者您也可以在.post()函数的成功回调中编写vakue.

Or you could write the vakue in the success callback of the .post() function.

$.post('get_stuff.php', {id: id}, function(result) {
  //result2 = result; // don't know if you still need the result2 var somewhere else. If that's the case you should use one of the other approaches (as stated above)
  oTable.fnOpen( this, result, "info_row_");
}); 

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