<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head><body>
<input type=button value=test onclick="testFun()">
<table>
<tr>
<td><input type=checkbox name=aaa ></td>
<td><input name=bbb ></td>
</tr><tr>
<td><input type=checkbox name=aaa ></td>
<td><input name=bbb ></td>
</tr><tr>
<td><input type=checkbox name=aaa ></td>
<td><input name=bbb ></td>
</tr></table>
</body></html>
<script>
function testFun()
{
var a= document.getElementsByName("aaa");
var num=0;
for(var i=0;i<a.length;i++)
{
if(a[i].checked)
{
num++;
if(a[i].parentElement.parentElement.all.bbb.value=="")
{
alert("Please input!");
a[i].parentElement.parentElement.all.bbb.focus();
return false;
}
}}
if(num==0)
alert("Please select");}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head><body>
<input type=button value=test onclick="testFun()">
<table>
<tr>
<td><input type=checkbox name=aaa ></td>
<td><input name=bbb ></td>
</tr><tr>
<td><input type=checkbox name=aaa ></td>
<td><input name=bbb ></td>
</tr><tr>
<td><input type=checkbox name=aaa ></td>
<td><input name=bbb ></td>
</tr></table>
</body></html>
<script>
function testFun()
{
var a= document.getElementsByName("aaa");
var num=0;
for(var i=0;i<a.length;i++)
{
if(a[i].checked)
{
num++;
if(a[i].parentElement.parentElement.all.bbb.value=="")
{
alert("Please input!");
a[i].parentElement.parentElement.all.bbb.focus();
return false;
}
}}
if(num==0)
alert("Please select");}
</script>
function formCheck()
{
var checkid = document.getElementsByName("checkbox");
var textfield = document.getElementsByName("textfield");
for(var j=1;j<=checkid.length;j++)
{
if(checkid[j].checked == true)
{
if(textfield[j].value=="")
{
alert("请在所选复选框后面的文本框里面输入东西!");
return false;
}
}
}
}
</script>
果然是。:)
但为什么我加了一个else过后就又什么反应都没有了?
<script language="JavaScript">
function formCheck()
{
var checkid = document.getElementsByName("checkbox");
var textfield = document.getElementsByName("textfield");
for(var j=1;j<=checkid.length;j++)
{
if(checkid[j].checked == true)
{
if(textfield[j].value=="")
{
alert("请在所选复选框后面的文本框里面输入东西!");
return false;
}
//这里 else
{
alert("已经输入!");
return false;
}
}
}
}
</script>