我是javascript的新手......如何获得< select>的价值在这个函数的JavaScript中 [英] I am new in javascript...How do I get value of <select> in javascript in this function

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");
                    }
                }
            }
        }

推荐答案

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');
}

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