<form action="" method="post" name="form1">
<input type="checkbox" name="ch1">
<input type="checkbox" name="ch2">
<input type="button" value="Submit" onclick="doSubmit()">
</form>
<script>
function doSubmit(){
if(!document.form1.ch1.checked && !document.form1.ch2.checked){
alert("请选择一个!");
return;
}else{
document.form1.submit();
}
}
</script>
<input type="checkbox" name="ch1">
<input type="checkbox" name="ch2">
<input type="button" value="Submit" onclick="doSubmit()">
</form>
<script>
function doSubmit(){
if(!document.form1.ch1.checked && !document.form1.ch2.checked){
alert("请选择一个!");
return;
}else{
document.form1.submit();
}
}
</script>
还是 ((!document.form1.ch1.checked) && (!document.form1.ch2.checked)) 对?
试下吧
<script>
function doSubmit(){
if(document.form1.ch1.checked==document.form1.ch2.checked){
alert("请选择一个!");
return;
}else{
document.form1.submit();
}
}
</script>