<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title> </title>
<script src="/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("form").submit(function(){
alert("submit is ok");
return false;
});
$("button").click(function(){
//获取 对应的id，到ids
if(false){
$("form").submit();
}else{
console.log('参数不全');
}
});
});
</script>
</head>
<body>
<!-- 隐藏域的input -->
<form action="">
<input type="hidden" name="username" value="test"><br>
</form>
<button>提交</button>
</body>
</html>