我正在尝试在加载页面后以HTML格式提交表单。它在刷新表单时起作用。否则，表单将无法提交。我的HTML页面，complaint.html如下：
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Open+Sans:300,400,700">
<link rel="stylesheet" href="jquery.mobile-1.4.5/demos/css/themes/default/jquery.mobile-1.4.5.min.css">
<link rel="stylesheet" href="jquery.mobile-1.4.5/demos/_assets/css/jqm-demos.css">
<script src="jquery.mobile-1.4.5/demos/js/jquery.js"></script>
<script src="jquery.mobile-1.4.5/demos/_assets/js/index.js"></script>
<script src="jquery.mobile-1.4.5/demos/js/jquery.mobile-1.4.5.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<script>
$(document).ready(function() {
$('#submt4').removeClass('ui-btn');
});
</script>
</head>
<body>
<div class="center container-fluid">
<div class="row">
<div class="col-xs-12">
<h2 align="center">COMPLAINTS</h2>
</div>
</div>
<div class="row">
<div class="col-xs-12"><input type="text" placeholder="Name" name="name" id="name">
</div>
</div>
<div class="row">
<div class="col-xs-12"><input type="text" placeholder="Mobile" name="mobile" id="mobile"></div>
</div>
<div class="row">
<div class="col-xs-12"><input type="text" placeholder="Vehicle No" name="vehicleno" id="vehicleno"></div>
</div>
<div class="row">
<div class="col-xs-12"><textarea rows="4" cols="50" name="complaint" id="complaint">Enter your complaint here...</textarea></div>
</div>
<div class="row">
<div class="col-xs-12" align="center">
<button class="btn btn-primary btn-lg " type="button" id="submt4" onClick="funComplaint();">SUBMIT</button></div>
</div>
</div>
</div>
<script type="text/javascript">
function funComplaint() {
var name = document.getElementById("name").value;
var mobile = document.getElementById("mobile").value;
var vehno = document.getElementById("vehicleno").value;
var complaint = document.getElementById("complaint").value;
var letters = /^[A-Za-z, ]+$/;
var numbers = /^[0-9]+$/;
var alphanum = /^[0-9a-zA-Z]+$/;
if (name == "" || mobile == "" || vehno == "" || complaint == "") {
alert("Please fill all fields........");
return false;
}
if (name.match(letters)) {} else {
alert("Name must have alphabet characters only");
document.getElementById('name').focus();
return false;
}
if (mobile.match(numbers)) {} else {
alert("Mobile number must have numeric characters only");
document.getElementById('mobile').focus();
return false;
}
if (mobile.length == 0 || mobile.length > 12 || mobile.length < 10) {
alert("Mobile number should not be empty / length be between 10 to 12");
document.getElementById('mobile').focus();
return false;
}
if (vehno.match(alphanum)) {} else {
alert("Vehicle number must have alphanumeric characters only");
document.getElementById('vehicleno').focus();
return false;
}
var x = new XMLHttpRequest();
x.onreadystatechange = function() {
if (x.readyState == 4 && x.status == 200) {
var msg = x.responseText.trim();
if (msg == "Complaint Received") window.location = "home.html";
} else {
alert(msg);
}
}
}
x.open("GET", "http://localhost:8087/CarRental/com/selcar/getComplaint.jsp?name=" + name + "&mobile=" + mobile + "&vehno=" + vehno + "&complaint=" + complaint, true);
x.send();
}
</script>
</body>
</html>在 x.onreadystatechange 定义之后，您有一个太多的}。
只需在x.open(...之前删除一个}。