我正在编写一个读取下拉值然后执行一些操作的代码，我试图弄清楚如何获取选择选项值并为该值设置条件。
<script>
var e = document.getElementById("selectNewBalance");
var value = e.options[e.selectedIndex].value;
if (value == "Inserted values"){
/// from here to the return statement I know for sure it works but now i'm trying to apply this condition only when the select option is "Inserted values"
var checkThisOnes = ["Value1", "Value2", "Value3"];
var printThisOnes = []
var message = "Please fill these fields: "
$('#myform').submit(function() {
var result=true;
for (i = 0; i < checkThisOnes.length; i = i + 1) {
var checkedValue = $('#'+checkThisOnes[i]).val();
if (checkedValue === undefined || checkedValue === "") {
message = message + checkThisOnes[i]+ ", ";
result =false;
}
}
if (result === false) {
alert(message)
location.reload();}
return result;
});}
</script>
