嗨，我在不刷新的情况下提交表单时遇到了一些问题，我知道这与"return false"有关，但我不知道在哪里以及如何使用它。我试着通过放置它来刷新页面（如果有错误），但它似乎不起作用。你们能帮我吗？？
<?php
$message = '';
$errors = array();
$noErrors = true;
$haveErrors = !$noErrors;
require_once('validations/tradeformresult.php');
if ($noErrors && $userArriveBySubmittingAForm) {
require_once('price.php');// INSERTION
echo "<script type='text/javascript'>'n";
echo "</script>";
echo "<script type='text/javascript'>'n";
echo "alert('Trade is successfully executed!');'n";
echo "</script>";
///////////MESSAGE/////////////////
}
elseif ($haveErrors && $userArriveBySubmittingAForm) {
echo "<script type='text/javascript'>'n";
echo "alert('Please re-enter your parameters.');'n";
echo "return false";
echo "</script>";
}
else if ($userArriveByClickingOrDirectlyTypeURL) { // we put the original form inside the $message variable
$newTitle = 'The link is broken';
$h1Title = '';
$message = '';
}
?>
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
</script><head><meta charset="UTF-8"></head>
<style type="text/css">
div#overlay {
display: none;
z-index: 2;
background: #000;
position: fixed;
width: 100%;
height: 100%;
top: 0px;
left: 0px;
text-align: center;
}
div#specialBox {
display: none;
position: relative;
z-index: 3;
p.padding;
padding-top:25px;
padding-bottom:25px;
padding-right:50px;
padding-left:50px;
margin: 150px auto 0px auto;
border: 3px solid blue;
outline: 3px solid darkblue;
width: 500px;
height: 500px;
overflow:auto;
background: #FFF;
color: #000;
}
div#wrapper {
position:absolute;
top: 0px;
left: 0px;
padding-left:24px;
}
</style>
<script type="text/javascript">
function toggleOverlay(){
var overlay = document.getElementById('overlay');
var specialBox = document.getElementById('specialBox');
overlay.style.opacity = .8;
if(overlay.style.display == "block"){
overlay.style.display = "none";
specialBox.style.display = "none";
} else {
overlay.style.display = "block";
specialBox.style.display = "block";
}
}
</script>
</head>
<body>
<!-- Start Overlay -->
<div id="overlay"></div>
<!-- End Overlay -->
<!-- Start Special Centered Box -->
<div id="specialBox" style="display:none">
<script>
</script>
<p>Create Order
<p><?php
$timestamp=time(); require_once 'start.php';
?>
<form method="post" name="formSubmitted" **return false;"**>
<input type="hidden" name="formSubmitted" value="true" runat="server">
<?php echo $message; ?>
<?php ?>
<?php if ($haveErrors || $userArriveByClickingOrDirectlyTypeURL) : ?>
<fieldset>
<p>Symbol : <select name = "selection" id="selection">
<option disabled = "disabled" selected = "selected"> Choose one </option>
<option value="eur/usd"<?php If($selection=='eur/usd'){Echo 'selected';}?>>EUR/USD</option>
<option value="usd/jpy"<?php If($selection=='usd/jpy'){Echo 'selected';}?>>USD/JPY</option>
<option value="usd/cad"<?php If($selection=='usd/cad'){Echo 'selected';}?>>USD/CAD</option>
<option value="eur/jpy"<?php If($selection=='eur/jpy'){Echo 'selected';}?>>EUR/JPY</option>
<option value="eur/chf"<?php If($selection=='eur/chf'){Echo 'selected';}?>>EUR/CHF</option>
<option value="gbp/usd"<?php If($selection=='gbp/usd'){Echo 'selected';}?>>GBP/USD</option>
<option value="aud/usd"<?php If($selection=='aud/usd'){Echo 'selected';}?>>AUD/USD</option>
<option value="usd/chf"<?php If($selection=='usd/chf'){Echo 'selected';}?>>USD/CHF</option>
</select><font color="red"><?php echo $selectionError?></font>
<p> Date : <input type="datetime" value="<?php echo date("Y-m-d ",$timestamp); ?>"READONLY name="date"/></p>
<p> Type : <input type="radio" name="type" value="buy"<?php if ($type == 'buy') echo 'checked'; ?>CHECKED> Buy <input type="radio" name="type" value="sell" <?php if ($type == 'sell') echo 'checked'; ?>>Sell<font color="red"><?php echo $typeError;?></font></p>
<p> Size : <input type="number"pattern="[0-9]+(['.|,][0-9]+)?" step="0.01"min="0"name="size"value="<?php echo $size;?>"/><font color="red"><?php echo $sizeError?></font></p>
<p> Bid Price (Sell) : <input id="bidprice" READONLY name="bidprice" type="text" value="<?php echo $bidprice;?>"/><font color="red"><?php echo $bidpriceError?></font></p>
<p> Offer Price (Buy) :<input id="offerprice" READONLY name="offerprice" type="text" value="<?php echo $offerprice;?>"/><font color="red"><?php echo $offerpriceError?></font> </p>
<p> Stop Loss : <input type="number"step="any"min="0" name="stoploss" value="<?php echo $stoploss;?>"/><font color="red"><?php echo $stoplossError?></font></p>
<p> Take Profit : <input type="number"step="any"min="0"name="takeprofit"value="<?php echo $takeprofit;?>"/><font color="red"><?php echo $takeprofitError?></font></p>
</fieldset>
<div align="center">
<input type="submit" value="Submit" Onsubmit =**"return false"**;/><button onmousedown="toggleOverlay()">Close </button>
</div>
<input type="reset" name="Reset" value="Reset" tabindex="50">
<?php endif; ?>
</form>
</script>
</body>
</html></p>
</div>
</div>
<!-- Start Special Centered Box -->
<!-- Start Normal Page Content -->
<div id="wrapper">
<h2>Trade</h2>
<button onmousedown="toggleOverlay();**return false;"**>Create Order</button>
</div>
<!-- End Normal Page Content -->
</body>
</html>
<?php
?>
除非您使用AJAX，否则您无法从PHP真正做到这一点。表单提交后就可以了。简单的验证可以在浏览器中完成。将验证函数绑定到表单的提交事件。这就是你返回虚假或真实的东西。
（您当然会在服务器上再次验证。）
从你的代码中看，你似乎正在尝试运行一些php代码（tradeformresult.php）。以这种方式加载它不会像预期的那样工作，因为require_one将在php中运行，而不是在浏览器中。
对于在不刷新页面的情况下发送表单，您应该研究AJAX(http://en.wikipedia.org/wiki/Ajax_（编程）
JQuery有一个很好的AJAX方法。以下是如何使用它的一个简单示例：
$.ajax({url:"http://www.someserver.com/api/path",
data:{val1:"value",val2:"value"})
.success(function(returnData) {
console.log(returnData);
});
上面将使用给定的数据作为参数调用给定的URL，然后，如果成功，将服务器返回的任何数据返回到returnData变量中。
如果您使用AJAX，您甚至不必使用<form>标记，因为您将手动构建查询字符串。您可以拥有一个函数，使AJAX调用从按钮的onClick事件触发。