87,997
社区成员




<%
for(int i=0;i<list.size();i++){
Letter letter = (Letter)list.get(i);
%>
<tr>
<td><input type="checkbox" name="chkSon" value="<%=letter.getId()%>"/></td>
<td><%=letter.getLetterTitle()%></td>
<td><%=letter.getMailTypeName()%></td>
<td><%=letter.getSender()%></td>
<td><%=letter.getDealName()%></td>
</tr>
<%}%>
function isselected() {
var ids = document.getElementsByName("chkSon");
for (i = 0; i < ids.length; i++) {
if (ids[i].checked) {
alert(ids[i].checked + " i:" + ids[i].value);
return true;
}
alert("请选择内容,再操作!");
return false;
}
}
function isselected() {
var ids = document.getElementsByName("chkSon");
for (i = 0; i < ids.length; i++) {
if (ids[i].checked) {
alert(ids[i].checked + " i:" + ids[i].value);
return true;
}
}
alert("请选择内容,再操作!");
return false;
}
<!DOCTYPE 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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script>
window.onload=function(){
var oBtn=document.getElementById('detech');
oBtn.onclick=function()
{
if(isselected())
{
alert('有选择项');
}
else
{
alert('请选择至少一项!');
}
}
}
function isselected() {
var ids = document.getElementsByName("chkSon");
for (var i = 0; i < ids.length; i++) {
if (ids[i].checked) {
return true;
}
}
return false;
}
</script>
</head>
<body>
<input type="checkbox" name="chkSon" value="1"/>
<input type="checkbox" name="chkSon" value="2"/>
<input type="checkbox" name="chkSon" value="3"/>
<input type="checkbox" name="chkSon" value="4"/>
<p>
<input type="button" value="检测" id="detech"/>
</p>
</body>
</html>
<table>
<tr>
<td><input type="checkbox" name="chkSon" value="<%=letter.getId()%>"/></td>
<td><%=letter.getLetterTitle()%></td>
<td><%=letter.getMailTypeName()%></td>
<td><%=letter.getSender()%></td>
<td><%=letter.getDealName()%></td>
</tr>
<tr>
<td><input type="checkbox" name="chkSon" value="<%=letter.getId()%>"/></td>
<td><%=letter.getLetterTitle()%></td>
<td><%=letter.getMailTypeName()%></td>
<td><%=letter.getSender()%></td>
<td><%=letter.getDealName()%></td>
</tr>
<tr>
<td><input type="checkbox" name="chkSon" value="<%=letter.getId()%>"/></td>
<td><%=letter.getLetterTitle()%></td>
<td><%=letter.getMailTypeName()%></td>
<td><%=letter.getSender()%></td>
<td><%=letter.getDealName()%></td>
</tr>
</table>
<input type="button" onclick="isselected()" value="删除" />
<script>
function isselected() {
var ids = document.getElementsByName("chkSon");
for (i = 0; i < ids.length; i++) {
if (ids[i].checked) {
alert(ids[i].checked + " i:" + ids[i].value);
return true;
}
}
alert("请选择内容,再操作!");
return false;
}
</script>
没有问题啊。。勾选就不会执行 alert("请选择内容,再操作!");