datatables - 无法读取未定义的属性 'ntr'

Question

当数据不存在时，当我在数据表上执行鼠标悬停功能时，出现错误“无法读取未定义的属性‘ntr’”。当表格被填充时它工作得很好。代码如下:

$('#example_table tbody td').live('mouseover mouseout', function(event) { 
if (event.type == 'mouseover') {// do something on mouseover 
    console.log('inside mouseover');
    var iPos = oTable.fnGetPosition( this ); // getting error in this line
    if(iPos!=null){
        console.log(iPos);
        var iCol= iPos [1];
    }
}
});

我应该做什么检查才能避免出现此错误

谢谢

Answer 1

您可以检查您的表是否已填充，如果没有则返回:

$('#example_table tbody td').live('mouseover mouseout', function(event) {
  if (event.type == 'mouseover') {// do something on mouseover 
    console.log('inside mouseover');

    // check if you have data in your table
    if (oTable.fnGetData().length <= 0) { // or some similar check
      return;
    }

    var iPos = oTable.fnGetPosition( this ); // getting error in this line
    if(iPos!=null){
      console.log(iPos);
      var iCol= iPos [1];
    }
  }
});