我是javascript的新手......如何获得< select>的价值在这个函数的JavaScript中
问题描述：
function validateField() {
var Inp = document.getElementsByTagName("input");
var s = document.getElementsByTagName("select");
for (var i = 0; i < Inp.length + s.length; i++) {
if (Inp[i].getAttribute("isvalid") == "In") {
if (Inp[i].value == "") {
alert("Pls enter value");
}
}
else {
if (s[i].value == "Select") {
alert("Pls select city");
}
}
}
}
答
var selected_index = oForm.elements["country"].selectedIndex;
if(selected_index > 0)
{
var selected_option_value = oForm.elements["country"].options[selected_index].value;
var selected_option_text = oForm.elements["country"].options[selected_index].text;
}
else
{
alert('Please select a country from the drop down list');
}