如何获取动态(JSP)创建的选项数<;选择>;部分,在JavaScript中?,javascript,jsp,Javascript,Jsp,我使用以下命令生成页面:
<%List<String> someList = new ArrayList<String>();
someList = SQL();%>
<select id=Select>
<% for (int i =0; i < someList.size(); i++) { %>
<option value=<%= someList.get(i) %>><%= som
我使用以下命令生成页面:
<%List<String> someList = new ArrayList<String>();
someList = SQL();%>
<select id=Select>
<% for (int i =0; i < someList.size(); i++) { %>
<option value=<%= someList.get(i) %>><%= someList.get(i) %></option>
<%} %>
</select>
<button type="button" onclick="updateParagraph()">Update Paragraph!</button>
更新段落!
好的,这部分是使用JSP在服务器上创建的,但现在我希望执行以下代码
在客户端
var counter=0;
function updateParagraph()
{
var x = document.getElementById("paragraph"+counter);
var y = document.getElementById("Select").value;
if (counter < 5)
{
x.innerHTML = y;
counter++
}
}
var计数器=0;
函数updateParagraph()
{
var x=document.getElementById(“段落”+计数器);
var y=document.getElementById(“选择”).value;
如果(计数器<5)
{
x、 innerHTML=y;
柜台++
}
}