If you want to query the value, select option under the drop-down selection
var tem="China";
$(" select option[value='"+tem+"']").attr("selected","selected"); //If the value is the same, select the corresponding option,
If you want to query the value, select option under the drop-down selection
var tem="China";
$(" select option[value='"+tem+"']").attr("selected","selected"); //If the value is the same, select the corresponding option,