我的表单上有两个输入，我想在文档加载时更改它的值。
这是我的代码：
<?php
$base = dirname(dirname(__FILE__));
include($base."/include/db.php");
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>eMail Stationery | Installation for iPhone/iPad</title>
<link href="../css/bootstrap.min.css" rel="stylesheet">
<link href="../font-awesome/css/font-awesome.css" rel="stylesheet">
<link href="../css/plugins/steps/jquery.steps.2.css" rel="stylesheet">
<link href="../css/animate.css" rel="stylesheet">
<link href="../css/style.css" rel="stylesheet">
</head>
<body class="gray-bg">
<div class="">
<center>
<img src="../img/esignia.png">
<h3>iPhone/iPad Installation</h3>
<p>Follow the steps provided to install your signature</p>
</center>
</div>
<div id="wizard">
<h3>Enter your details</h3>
<section>
<center>
<div class="row"></div>
<p><h2>Enter your details</h2></p>
<p>Enter your email address and unique pin number into the fields below to receive an email with a link to your signature.</p>
<div class="row">
<div class="col-lg-4"></div>
<div class="col-lg-4">
<form id="submitForm" method="post">
<center>
<div class="form-group">
<input id="email" name="email" type="email" placeholder="Email address" class="form-control" required>
</div>
<div class="form-group">
<input id="pin" name="pin" type="number" placeholder="Unique PIN" class="form-control" required>
</div>
<button class="btn btn-success">Submit</button>
<p>
</p>
</center>
</form>
</div>
</div>
</center>
</section>
<h3>Copying your signature</h3>
<section>
<center>
<p><h2>Copying your signature</h2></p>
<p>Once you have followed the link we provided in the email, you will see your signature displayed fully on your device's web browser.</p>
<p>Simply highlight all of your signature and copy it to your device's clipboard as demonstrated below.</p>
<p><img src="../img/install/iphone_2.png" width="320px" height="480px"></p>
</center>
</section>
<h3>Locating your signature settings</h3>
<section>
<center>
<p><h2>Locating your signature settings</h2></p>
<p>Great! We've copied your signature and it is now ready to be installed!</p>
<p>We just need to find your mail's signature settings.</p>
<p>These are located at <b>Settings -> Mail, Contacts, Calendars -> Signature</b>
<p><img src="../img/install/iphone_3.png" width="320px" height="480px">
<img src="../img/install/iphone_4.png" width="320px" height="480px"></p>
</center>
</section>
<h3>Installing your signature</h3>
<section>
<center>
<p><h2>Installing your signature</h2></p>
<p>Now that we have your signature settings open, you'll find an empty box ready for your signature to be pasted.</p>
<p>So all you need to do now is paste what we copied earlier into the box.</p>
<p><img src="../img/install/iphone_5.png" width="320px" height="480px"></p>
<p>One final thing you'll need to do is give your phone a quick shake to undo any of the modifications that your device will attempt to make to your signature's HTML code.</p>
<p>This is necessary for your signature to appear <i>exactly</i> how it appeared when you opened it.</p>
<p><img src="../img/install/iphone.gif"></p>
<p class="text-navy"><b>Congratulations, you've now successfully installed your signature to your device!</b></p>
</center>
</section>
</div>
</div>
</div>
<!-- Mainly scripts -->
<script src="../js/jquery-2.1.1.js"></script>
<script src="../js/bootstrap.min.js"></script>
<script src="../js/plugins/steps/jquery.steps.js"></script>
<script>
$(document).ready(function() {
var email = getUrlParameter("email");
var pin = getUrlParameter("pin");
if(email != undefined && pin != undefined) {
$("#email").val(email);
$("#pin").val(pin);
}
$("#wizard").steps({
headerTag: "h3",
bodyTag: "section",
transitionEffect: "slideLeft",
autoFocus: true
});
$("#submitForm").submit(function() {
var email = $("input[name='email']").val();
var pin = $("input[name='pin']").val();
$.get("../api/installed.php", {
email: email,
pin: pin
});
});
$("a[href='#finish'").click(function() {
window.location.href = "index.php";
});
});
var getUrlParameter = function getUrlParameter(sParam) {
var sPageURL = decodeURIComponent(window.location.search.substring(1)),
sURLVariables = sPageURL.split('&'),
sParameterName,
i;
for (i = 0; i < sURLVariables.length; i++) {
sParameterName = sURLVariables[i].split('=');
if (sParameterName[0] === sParam) {
return sParameterName[1] === undefined ? true : sParameterName[1];
}
}
};
</script>
</body>
</html>
这不起作用。
但是，我在chrome的控制台中复制了相同的代码，它完美无缺。我唯一的假设是在加载文档后，这些控件与Bootstrap / jQuery混淆和/或重新创建。
但我无法弄清楚在哪里或为什么，或者我应该做些什么。
答案 0 :(得分：-1)
这可能是因为DOM尚未就绪，请尝试使用以下代码
$(window).load(function() {
var email = getUrlParameter("email");
var pin = getUrlParameter("pin");
if(email != undefined && pin != undefined) {
$("#email").val(email);
$("#pin").val(pin);
}
}
如果仍然无法正常工作，请尝试更改您的元素ID，以检查天气是否与其他元素发生冲突