提交表单之前对RadioButtonList控件的选中项进行判断:
方法一:
<script type="text/javascript">
function checkra()
{
var rbltable = document.getElementById("rbType");
var rbs = rbltable.getElementsByTagName("Input");
var result = false;
for (var i = 0; i < rbs.length; i++) {
if (rbs[i].checked) {
result = true;
break; }
}
return result;
}
</script>
方法二:
<script type="text/javascript">
function checkvalue()
{
var condITion='';
for (var i=0 ; i <form1.elements.length;i++)
{
if (form1.elements[i].type=="radio")
{
if (form1.elements[i].checked )
{
condITion=true;
break;
}
}
}
if(!condITion)
{
alert("请选择咨询类型");
return false;
}
</script>