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分享如何验证一组radiobutton是否被选中!!
源代码在此:
<SCRIPT language="javascript">
function funcCheck() {
with(document.frmlogin)
{
if(a.value == "")
{
alert("please select!!!");
return ;
}
}
}
</SCRIPT>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head>
<body>
<form name="frmlogin" method="post" action=""> <p>
<input type="radio" name="a" value="1"> </p> <p>
<input type="radio" name="a" value="3"> </p> <p>
<input type="radio" name="a" value="2"> </p> <p>
<input type="submit" name="Submit" value="Submit" OnCLick="funcCheck();"> </p>
</form>
</body>
</html> 如何实现在我一个不选的情况下,跳出一个警告窗口!!因为程序的原因,不希望默认的的选中某个button来解决这个问题! 大侠们 ,请赐教!!!!!
<SCRIPT language="javascript">
function funcCheck() {
with(document.frmlogin)
{
if(a.value == "")
{
alert("please select!!!");
return ;
}
}
}
</SCRIPT>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head>
<body>
<form name="frmlogin" method="post" action=""> <p>
<input type="radio" name="a" value="1"> </p> <p>
<input type="radio" name="a" value="3"> </p> <p>
<input type="radio" name="a" value="2"> </p> <p>
<input type="submit" name="Submit" value="Submit" OnCLick="funcCheck();"> </p>
</form>
</body>
</html> 如何实现在我一个不选的情况下,跳出一个警告窗口!!因为程序的原因,不希望默认的的选中某个button来解决这个问题! 大侠们 ,请赐教!!!!!
...全文
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lsrzm 2003-06-23
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<form name=frmtest >
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=button value=check onclick="check()">
</form>
<script>
function check()
{
var checkit=false;
aa = document.getElementsByName("radioEx");
for (i=0;i<aa.length;i++)
{
if (aa[i].checked)
checkit = true;
}
if (checkit==false)
alert("请选择一个！");
}
</script>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=button value=check onclick="check()">
</form>
<script>
function check()
{
var checkit=false;
aa = document.getElementsByName("radioEx");
for (i=0;i<aa.length;i++)
{
if (aa[i].checked)
checkit = true;
}
if (checkit==false)
alert("请选择一个！");
}
</script>
Reker熊 2003-06-23
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<script>
function check(frm){
for(i=0;i<frm.radioEx.length;i++)
{if(frm.radioEx[i].checked)return true;}
alert('You Must Check One at least');
return false;
}
</script>
<form name=frmtest onsubmit="return check(this)">
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=submit>
</form>
function check(frm){
for(i=0;i<frm.radioEx.length;i++)
{if(frm.radioEx[i].checked)return true;}
alert('You Must Check One at least');
return false;
}
</script>
<form name=frmtest onsubmit="return check(this)">
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=radio name=radioEx>
<input type=submit>
</form>
fason 2003-06-23
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<script>
function checkRadio(f){
for(i=0;i<f.r.length;i++)if(f.r[i].checked)return true;
alert('请选择')
return false
}
</script>
<form name=frm2 onsubmit="return checkRadio(this)">
<input type=radio name=r><input type=radio name=r>
<input type=radio name=r><input type=radio name=r>
<input type=submit>
</form>
function checkRadio(f){
for(i=0;i<f.r.length;i++)if(f.r[i].checked)return true;
alert('请选择')
return false
}
</script>
<form name=frm2 onsubmit="return checkRadio(this)">
<input type=radio name=r><input type=radio name=r>
<input type=radio name=r><input type=radio name=r>
<input type=submit>
</form>
