1. Description
(1) Get the index selected by the select drop-down box
$("#selection").get(0).selectedIndex;(2) Get the selected value of the select drop-down box
$("#selection option:selected").val();(3) Get the text selected in the select drop-down box
$("#selection option:selected").text();2. Implement source code
html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<HTML xmlns="http://www.w3.org/1999/xhtml">
<HEAD>
<script type="text/javascript" src="../Documents/未命名站点 2/jquery-1.11.0.js"></script>
<script type="text/javascript">
$(function(){
$("#btn").click(function(){
//获取select下拉框索引
var index = $("#selection").get(0).selectedIndex;
//获取select下拉框的值
var selectVal = $("#selection option:selected").val();
//获取select下拉框的文本
var selectText = $("#selection option:selected").text();
alert("获取select下拉框索引：" + index + "\n" + "获取select下拉框的值：" + selectVal + "\n" + "获取select下拉框的文本：" + selectText);
});
});
</script>
<DIV id=select_val>
<SELECT id=selection> <OPTION selected value=0>鲤鱼</OPTION> <OPTION value=1>鳐鱼</OPTION> <OPTION value=2>鲶鱼</OPTION> <OPTION value=3>棒棒鱼</OPTION> <OPTION value=4>小姐鱼</OPTION> <OPTION value=5>红金花罗汉鱼</OPTION> <OPTION value=6>彩虹王罗汉鱼</OPTION> <OPTION value=7>泰金罗汉鱼</OPTION></SELECT>
</DIV>
<INPUT id=btn value=获取选中的文本和值 type=button>3. Realize results
(1) Select the first item
(2) Select the last item
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