<!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>无标题文档</title>
<script type="text/javascript" src="jquery.min.js"></script><script type="text/javascript">
function aa(){
if($("#aa").val() == ""){
alert("不能为空");
return false;
}else
{
return true;
}
}
function email(){
if($("#email").val() == "" ){
alert("邮箱不能为空");
return false;
}else
{
return true;
}
}
function Submit(){
//这里要怎么写才能判断函数执行啊,提交的时候如果为空就不能提交,怎么写我忘了,原来都记得的,各位大侠帮忙。
}
</script>
</head><body>
<form name="form1" id="form1">
<input type="text" name="aa" id="ad" />
<input type="email" name="email" />
<input type="button" id="tj" value="提交注册信息" onclick="Submit()"/>
</form>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript" src="jquery.min.js"></script><script type="text/javascript">
function aa(){
if($("#aa").val() == ""){
alert("不能为空");
return false;
}else
{
return true;
}
}
function email(){
if($("#email").val() == "" ){
alert("邮箱不能为空");
return false;
}else
{
return true;
}
}
function Submit(){
//这里要怎么写才能判断函数执行啊,提交的时候如果为空就不能提交,怎么写我忘了,原来都记得的,各位大侠帮忙。
}
</script>
</head><body>
<form name="form1" id="form1">
<input type="text" name="aa" id="ad" />
<input type="email" name="email" />
<input type="button" id="tj" value="提交注册信息" onclick="Submit()"/>
</form>
</body>
</html>
<!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>无标题文档</title>
<script type="text/javascript" src="jquery.min.js"></script><script type="text/javascript">
function aa(){
if($("#ad").val() == ""){ //JQ是以id拿值的 不是根据元素的name
alert("不能为空");
return false;
}else
{
return true;
}
}
function email(){
if($("#emailId").val() == "" ){ //这个和上边问题一样
alert("邮箱不能为空");
return false;
}else
{
return true;
}
}
function Submit(){
if(aa() && email()){
return true;
}
return false;
}
</script>
</head><body>
<form name="form1" id="form1">
<input type="text" name="aa" id="ad" />
<input type="email" name="email" id="emailId" />
<input type="button" id="tj" value="提交注册信息" onclick="return Submit()"/>
</form>
</body>
</html>