function selectcp(objname)
{
var obj=document.getElementsByName(objname); var selArray=new Array();
for(var i=0;i<obj.length;i++)
{ if(obj[i].checked)
{selArray[i]=obj[i].value};
}
return selArray; }
{
var obj=document.getElementsByName(objname); var selArray=new Array();
for(var i=0;i<obj.length;i++)
{ if(obj[i].checked)
{selArray[i]=obj[i].value};
}
return selArray; }
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Untitled Document</title>
<Script type="text/javascript" language="JavaScript">
function submitclick(){
var setValue=selectcp("cbx");
if (setValue.length==0){
alert("你没有选择你喜爱的水果?")
return;
}else{
var smge="你喜欢的水果有"+setValue.toString();
alert(smge);
}
} function selectcp(objname){
var obj=document.getElementsByName(objname);
var selArray=new Array();
for(i=0;i<obj.length;i++){
if(obj[i].checked){
selArray.push(obj[i].value);
}
}
return selArray;
}
</Script>
</head><body>
你喜欢的水果有?
<form name="inputform" method="post" action="">
<input type="checkbox" name="cbx" value="苹果">红苹果 <br>
<input type="checkbox" name="cbx" value="西瓜">大西瓜 <br>
<input type="checkbox" name="cbx" value="梨子">鲜梨子 <br>
<input type="checkbox" name="cbx" value="桃子">大桃子 <br>
<input type="checkbox" name="cbx" value="苹果"> 苹果<br>
<br>
<input type="button" name="submit" value="提交" onClick="JavaScript:submitclick()">
<input type="reset" name="reset" value="重置">
</form>
</body>
</html>