我有一个表单，通过AJAX将数据作为JSON提交给GoogleSheet。
我想更改它，以便空白字段显示为空，而不是在Google表格中显示为undefined。
以下是我的代码：
HTML表单：
<!DOCTYPE html>
<html class="no-js" lang="en">
<head>
<title>MooWoos Stall Booking</title>
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta charset="UTF-8">
<link rel='stylesheet' href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<!--build:css css/styles.min.css-->
<link rel="stylesheet" href="/css/bootstrap.css">
<link rel="stylesheet" href="/css/style.css">
<!--endbuild-->
</head>
<body>
<div class="container">
<nav class="navbar navbar-toggleable-md navbar-light">
<a class="logo"><img src="assets/logo_opt.png" alt="MooWoos Stall Booking"></a>
</nav>
<hr>
<div class="modal fade" id="redirect_page" role="dialog">
<div class="modal-dialog">
<div class="modal-content">
<div class="form-horizontal">
<div class="modal-body">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<div id="user_msg">Booking successful! Redirecting to PayPal... </div>
</div>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6 col-md-offset-3 bookingform">
<h1>Stall Booking Form</h1>
<p class="lead">
Fill out the form to book and pay for your stall!
</p>
<form id="bookingForm" action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
<!-- BELOW ARE PAYPAL FIELDS FROM PAYPAL GENERATION -->
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" id="hosted_button_id" name="hosted_button_id" value="js_value">
<input type="hidden" name="currency_code" value="GBP">
<div class="form-group">
<label for="name">Name </label>
<input type="text" id="name" name="name" class="form-control" placeholder="Your Name" value="" title="Please enter your name" required/>
</div>
<div class="form-group">
<label for="address">Address </label>
<textarea id="address" name="address" class="form-control" placeholder="Your Address" title="Please enter your address" required></textarea>
</div>
<div class="form-group">
<label for="phone">Telephone Number </label>
<input type="tel" id="phone" pattern="(([0]{1})|([\+][4]{2}))([1]|[2]|[3]|[7]){1}\d{9}$" name="phone" class="form-control" placeholder="Your Telephone Number" value="" title="Please enter the best telephone number to contact you on" required/>
</div>
<div class="form-group">
<label for="email">Email </label>
<input type="email" id="email" name="email" class="form-control" placeholder="Your Email" value="" title="Please enter your Email address" required/>
</div>
<div class="form-group">
Which date would you like to book?
<p></p>
<p><input type="radio" name="date" value="13th September" required/> Sunday 13th September</p>
<p><input type="radio" name="date" value="6th February" /> Saturday 6th February</p>
</div>
<div class="form-group">
<label>What type of stall do you require?</label>
<div>
<input type="radio" name="stallType" id="stallType-Preloved" value="Preloved" required>
<label for="stallType-Preloved">Preloved</label>
<div class="reveal-if-active form-inline">
Will you be bringing a clothes rail?
<label class="stallLabel" for="c-rail-yes">Yes</label> <input type="radio" id=c-rail-yes name="c-rail" value="Yes" />
<label class="stallLabel" for="c-rail-no">No</label> <input type="radio" id=c-rail-no name="c-rail" value="No" />
</div>
</div>
<div>
<input type="radio" name="stallType" id="stallType-Craft" value="Craft">
<label for="stallType-Craft">Craft</label>
<div class="reveal-if-active">
<label for="craftName">What name do you use?</label>
<input type="text" id="craftName" name="craftName" class="require-if-active form-control" placeholder="Craft Name" title="Please provide us with your Craft name" value="" />
</div>
</div>
<div>
<input type="radio" name="stallType" id="stallType-Business" value="Business">
<label for="stallType-Business">Business</label>
<div class="reveal-if-active">
<label for="bizName">What is your business name?</label>
<input type="text" id="bizName" name="bizName" class="require-if-active form-control" placeholder="Business Name" title="Please provide us with your Business name" value="" />
<br>
Do you have Public Liability Insurance?
<label class="insuranceLabel" for="insurance-yes">Yes</label> <input type="radio" id="insurance-yes" name="insurance" class="require-if-active" data-require-pair="#stallType-Business" title="We will require proof of this prior to market day" value="Yes"/>
<label class="insuranceLabel" for="insurance-no">No</label> <input type="radio" id="insurance-no" name="insurance" class="require-if-active" data-require-pair="#stallType-Business" title="Our insurance does not cover other businesses. Please ensure you have adequate cover and provide us with proof prior to market day" value="No"/>
</div>
</div>
</div>
<div>
<input type="submit" id="submit-form" class="btn btn-success btn-lg" value="Book & Pay" />
</div>
</form>
<p></p>
</div>
</div>
<hr>
<footer>
<div class="row">
<div class="col-lg-12">
<p>Copyright © MooWoos 2018. Booking Form by Luke Brewerton</p>
</div>
</div>
</footer>
</div>
<!--build:js js/mwbookings-min.js -->
<script src="js/jquery.min.js"></script>
<script src="js/tether.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/jquery.serialize-object.min.js"></script>
<script src="js/main.js"></script>
<!-- endbuild -->
</body>
</html>
JS代码：
var $form = $('form#bookingForm'),
url = 'https://script.google.com/macros/s/AKfycbwaEsXX1iK8nNkkvL57WCYHJCtMAbXlfSpSn3rsJj2spRi-41Y/exec'
function disableAll() {
$('#c-rail-yes').attr('required', false).attr('disabled', true);
$('#c-rail-no').attr('required', false).attr('disabled', true);
$('#craftName').attr('required', false).attr('disabled', true);
$('#bizName').attr('required', false).attr('disabled', true);
$('#insurance-yes').attr('required', false).attr('disabled', true);
$('#insurance-no').attr('required', false).attr('disabled', true);
}
$('#stallType-Preloved').change(function () {
if(this.checked) {
disableAll();
$('#c-rail-yes').attr('required', true).attr('disabled', false);
$('#c-rail-no').attr('required', true).attr('disabled', false);
$('#hosted_button_id').attr('value', '7L75UXEHSKFLG');
}
});
$('#stallType-Craft').change(function () {
if(this.checked) {
disableAll();
$('#craftName').attr('required', true).attr('disabled', false);
$('#hosted_button_id').attr('value', 'HFTF3KS5T2ETA');
}
});
$('#stallType-Business').change(function () {
if(this.checked) {
disableAll();
$('#bizName').attr('required', true).attr('disabled', false);
$('#insurance-yes').attr('required', true).attr('disabled', false);
$('#insurance-no').attr('required', true).attr('disabled', false);
$('#hosted_button_id').attr('value', '48R67JG4F7H4J');
}
});
$('#submit-form').on('click', function(e) {
var valid = this.form.checkValidity();
if (valid) {
e.preventDefault();
var jqxhr = $.ajax({
url: url,
method: "GET",
dataType: "json",
dataType: "json",
data: $form.serializeObject(),
beforeSend: function (key,value) {
return (value == undefined) ? "" : value
},
success: function () {
$('#redirect_page').modal('show');
$('#bookingForm').submit();
}
});
}
});
我尝试使用beforeSend，但这似乎没有任何效果。
答案 0 :(得分：0)
假设表单中没有嵌套对象，您只需在发送对象元素之前循环它们
let jsObj = $form.serializeObject();
Object.keys(jsObj).forEach(key => {
jsObj[key] = jsObj[key] ? jsObj[key] : "";
})
然后你只需通过AJAX发送该对象：
$('#submit-form').on('click', function(e) {
var valid = this.form.checkValidity();
if (valid) {
e.preventDefault();
var jqxhr = $.ajax({
url: url,
method: "GET",
dataType: "json",
dataType: "json",
data: jsObj,
beforeSend: function (key,value) {
return (value == undefined) ? "" : value
},
success: function () {
$('#redirect_page').modal('show');
$('#bookingForm').submit();
}
});
}
});