Learning: Set the dropdownlist value in JS

ProgramRequiredDropdownlist with multiple columns,After selecting one of the items, you need to set the corresponding dropdownlist value.Use the DataGrid to simulate the dropdownlist.

Because we use js to control the selection of DataGrid items, we need to set the items corresponding to dropdownlist in JS as selected

Document. getelementbyid ('ddlgetticketcity'). value = This. cells [2]. innertext ;//

The setting item (the second column here) cannot be hidden, or cannot be found in JS;

If the data initialized by dropdownlist does not include the selected data, a JS error is thrown.

The following methods are recommended:

Function setselected (VAL)
{
VaR F = Document. form1;
For (I = 0; I <F. select1.options. length; I ++)
{
If (F. select1.options (I). value = Val)
{
F. select1.selectedindex = I
}
}
}

I wonder if there is a better way.