我有一个名为logo_design_3.php的PHP页面。 我使用Jquery将变量“grand_total”发布到名为logo_design_3_sql.php的另一个页面。但不幸的是，有时我会在下一页上获得该变量，有时候不会。 知道我哪里做错了吗？
以下是logo_design_3.php页面的摘要：
<script type="text/javascript">
function load1() {
document.getElementById('hide2').style.display = 'none';
return false;
}
function toggle() {
document.getElementById('hide1').style.display = 'none';
document.getElementById('hide2').style.display = '';
document.getElementById('hidrad').checked = 'true';
document.getElementById('silver').checked = false;
document.getElementById('bronze').checked = false;
document.getElementById('gold').checked = false;
}
function load2() {
document.getElementById('hide1').style.display = '';
document.getElementById('hide2').style.display = 'none';
}
</script>
<script type="text/javascript">
$(document).ready(function() {
var grand_total = 0;
$("input").live("change keyup", function() {
$("#Totalcost").val(function() {
var total = 0;
$("input:checked").each(function() {
total += parseInt($(this).val(), 10);
});
var textVal = parseInt($("#min").val(), 10) || 0;
grand_total = total + textVal;
return grand_total;
});
});
$("#next").live('click', function() {
$.ajax({
url: 'logo_design_3_sql.php',
type: 'POST',
data: {
grand_total: grand_total
},
success: function(data) {
// do something;
}
});
});
});
</script>
<script type="text/javascript">
function validate() {
var num = document.getElementById("min").value;
var num = parseInt(num, 10);
if (num < 299) {
document.getElementById("min").value = "299";
alert("Minimum Amount Should be 299");
}
}
</head>
<body onLoad="load1()">
<div id="wrap">
<div class="main-container internal">
<div class="main wrapper clearfix section">
<article>
<section>
<h1>Step 3. Contest details</h1>
<h2>Create a contest that attracts the right designers to your brief.</h2>
<p>We've got the largest design community online so it's important to create a contest that attracts the kinds of designers you want to work on your brief.</p>
<div id="form">
<form method="post" id="logoform3" action="logo_design_3_sql.php">
<label>What design package do you want?</label>
<br>All packages come with a 100% money-back guarantee and you own full copyright to the final design.
<br>
<p></p>
<p>
<input type="radio" class="radio" name="b" onClick="load2()" value="299" id="bronze">
<label>Bronze - $299</label>
<br>Get lots of great designs at a great price
<br>
<li style="list-style:circle">Expect around 30 designs</li>
</p>
<p>
<input type="radio" class="radio" name="b" onClick="load2()" value="499" id="silver">
<label>Silver - $499</label>
<label class="block badge">Most popular</label>
<br>Attract great designers and get priority support
<br>
<li style="list-style:circle">Your project will be shown to designers before bronze projects</li>
<li style="list-style:circle">Expect around 60 designs</li>
</p>
<p>
<input type="radio" class="radio" name="b" onClick="load2()" value="799" id="gold" checked="true">
<label>Gold - $799</label>
<label class="block badge">Work only with our top designers</label>
<br>Work only with our most talented designers and receive 1-on-1 support
<br>
<li style="list-style:circle">Only our best designers can participate to ensure top quality</li>
<li style="list-style:circle">A dedicated account manager will guide you to the best result possible</li>
<li style="list-style:circle">Expect around 60 designs of the highest quality</li>
</p> <a onclick="toggle(); event.preventDefault();" href="#" style="text-decoration:none;border-bottom:1px dotted blue;" id="hide1">I want to create a custom package</a>
<br>
<div id="hide2">
<p>
<input type="radio" class="radio" name="bbb" id="hidrad" checked="true" id="name_ur_price" value="0">Name your price:
<input type="number" width="10px" style="background:#ccc; border:1px solid #ccc !important;" id="min" min="299" name="min" onChange="validate();" id="name_your_price" name="name_your_price">.00($299 minimum)
<br>
</p>
</div>
<label>Contest preferences</label>
<br>
<input type="checkbox" name="" value="39.00" align="middle" id="private_contest" name="private_contest">
<label>Make your contest private (+$39.00)</label>
<br>Your contest will be hidden from search engines and the general public. Only members of the Square Designs community can see your contest and they must agree to a Non-Disclosure Agreement (NDA) to see the details. We provide a standard template for the NDA or <a href="" onclick="document.getElementById('upload').click(); return false"> you can upload your own(as a PDF).</a>
<br>
<input type="file" id="upload" name="upload" style="visibility: hidden; width: 1px; height: 1px" multiple />
<label id="design_dura" style="left:!important">How quickly do you need your design?</label>
<br>
<br>
<input type="radio" name="c" value="0">
<label>Standard 7 days (FREE)</label>
<br>
<input type="radio" name="c" value="39" id="days_3">
<label>In 3 days(+$39.00)</label>
<br>
<input type="radio" name="c" value="59" id="days_2">
<label>In 2 days(+$59.00)</label>
<br>
<label>
<input type="radio" name="c" value="79" id="days_1">In 24 hours(+$79.00)</label>
<h2>TOTAL :</h2>
<p>
<input type="text" name="Totalcost" id="Totalcost" style="background:#f5f5f5; border:none; outline:none; box-shadow:none; font-size:18px;" disabled/>
<br>
</p>
<input type="submit" class="sumit-styled" value="Next" style="margin-left:-15px;" id="next" name="next">
<input type="submit" class="sumit-styled" value="Save Now" style="margin-left:-15px;" id="save" name="save">
</form>
</div>
</section>
<aside>
<img src="img/slide2_2.png" webstripperwas="img/slide2_2.png" alt="mockup" />
<p><em>Donec sed odio dui. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum.</em>
</p>
</aside>
</article>
<!-- END MAIN -->
</div>
</div>
</div>
这是来自logo_design_3_sql.php页面：
<?php include ( "config.php");
$total=$_POST[ 'grand_total'];
$sql="INSERT INTO form2 (total)VALUES('$total')" ;
if($total>0)
{ $res = mysql_query($sql); }
if($res)
{ echo "<script> window.location.replace('logo_design_4.php')</script>"; }
else { echo "<script> window.location.replace('logo_design_3.php')</script>"; }
?>
我有关于 - ＆gt;的问题window.location.replace（'logo_design_4.php'）也是。即使$ total已正确插入表中，插入后导航的页面也是“logo_design_3.php”。为什么这样？
答案 0 :(得分：0)
请尝试以下实时功能
$("#next").live('click',function () {
$.ajax({
url: 'logo_design_3_sql.php',
type: 'POST',
data: {grand_total: grand_total},
success: function(data) {}
});
});
});
答案 1 :(得分：-1)
您必须在全局范围内声明grand_total变量。
var grand_total = 0;
$(document).ready(function () {
$("input").live("change keyup", function () {
$("#Totalcost").val(function () {
var total = 0;
$("input:checked").each(function () {
total += parseInt($(this).val(), 10);
});
var textVal = parseInt($("#min").val(), 10) || 0;
grand_total = total + textVal;
return grand_total;
});
});
$("#next").click(function () {
$.ajax({
url: 'logo_design_3_sql.php',
type: 'POST',
data: {grand_total: grand_total},
success: function(data) {}
});
});
});
请不要在生产系统上使用您的PHP代码。您必须检查POST变量（http://www.php.net/manual/en/security.database.sql-injection.php）