<form method='post' action='' onsubmit='javascript:return checkForm()'><div class='formput'>
<p><input type='checkbox' name='newa' value='1'>上传了新的照片</p><br/>
<p><input type='checkbox' name='newb' value='1'>发表了新的帖子</p><br/>
<p><input type='checkbox' name='newc' value='1'>发表了新的博文</p><br/>
<p><input type='checkbox' name='newd' value='1'>发表了新的微博</p>
</div><br/><input type='submit' name='submit' value='确 定'></form><script language="javascript">
function checkForm() {
var newa = document.getElementsByName("newa");
var newb = document.getElementsByName("newb");
var newc = document.getElementsByName("newc");
var newd = document.getElementsByName("newd");
if ((newa.checked == true) || (newb.checked == true) || (newc.checked == true) ||(newd.checked == true)) {
return true;
}else{
alert('至少选择一项!');
return false; }}
</script>
这样判断不知为什么不得?
<p><input type='checkbox' name='newa' value='1'>上传了新的照片</p><br/>
<p><input type='checkbox' name='newb' value='1'>发表了新的帖子</p><br/>
<p><input type='checkbox' name='newc' value='1'>发表了新的博文</p><br/>
<p><input type='checkbox' name='newd' value='1'>发表了新的微博</p>
</div><br/><input type='submit' name='submit' value='确 定'></form><script language="javascript">
function checkForm() {
var newa = document.getElementsByName("newa");
var newb = document.getElementsByName("newb");
var newc = document.getElementsByName("newc");
var newd = document.getElementsByName("newd");
if ((newa.checked == true) || (newb.checked == true) || (newc.checked == true) ||(newd.checked == true)) {
return true;
}else{
alert('至少选择一项!');
return false; }}
</script>
这样判断不知为什么不得?
<p><input type='checkbox' name='newa' value='1'>上传了新的照片</p><br/>
<p><input type='checkbox' name='newb' value='1'>发表了新的帖子</p><br/>
<p><input type='checkbox' name='newc' value='1'>发表了新的博文</p><br/>
<p><input type='checkbox' name='newd' value='1'>发表了新的微博</p>
</div><br/><input type='submit' name='submit' value='确 定'></form><script language="javascript">
function checkForm() {
var newa = document.getElementsByName("newa")[0];
var newb = document.getElementsByName("newb")[0];
var newc = document.getElementsByName("newc")[0];
var newd = document.getElementsByName("newd")[0];
if ((newa.checked == true) || (newb.checked == true) || (newc.checked == true) ||(newd.checked == true)) {
return true;
}else{
alert('至少选择一项!');
return false; }}
</script>