嘿，我需要知道如何使用 javascript 将信息发布到另一个 php 页面以提供预览表。
这是我的 HTML，其中包含一个 onchange 标记，该标记将 ProductID 发送到该函数。
<form action="Home.php" method="Post">
<div>
<p>
<span class="text">Please Select a product:</span>
<select id="Select_Product" name="Select_Product" onchange="productInfo(this.value)" class="select">
<?php
//setting the select statement and running it
$search = "SELECT * FROM Library.Products order by Name";
$return = mysql_query($search);
//echo "<select id=Select_Product name=Select_Product onchange=productInfo(this.value) class=select>";
while ($row = mysql_fetch_array($return)) {
echo "<option value='" . $row['ProductID'] . "' selected='selected'>".$row['Name'] . "</option>";
}
?>
</select>
</p>
<table>
<tr>
<td>
<input name="action" type="submit"class="button" id="button_Add" value="Add"/>
</td>
<td>
<input name="action" type="submit" class="button" id="button_Remove" value="Remove"/>
</td>
<td>
<input name="action" type="submit" class="button" id="button_empty" value="Empty"/>
</td>
</tr>
</table>
</div>
我希望它从那里将其发送到catalogue.php。
<script>
function productInfo(key) {
//Send key to catalogue.php
}
</script>
如果我可以从另一个页面获取该变量，我可以运行 MYSQL 命令来获取信息。这是 Catalogue.php 目前的样子。
<?php
$sql = "SELECT Name, Price FROM Library.Products WHERE ProductID = " . $product_id;
echo "<table border=\"1\" padding=\"3\" width=\"650px\"><tr><th>Name</th><th>Description</th><th>Price</th><th width=\"80px\">Image</th></tr>";
echo "<tr>";
echo "<td>" .$product_id . "</td>";
echo "<td> Hi</td>";
echo "<td></td>";
echo "<td align=\"center\"><img alt=\"\" src=\"productImages/".$product_id.".jpg\ width=\"120\" height=\"120\"/></td>";
echo "</tr>";
echo "</table><br>";
document.
?>
因此，从某种意义上说，我想将 productInfo(key) 中的 key 分配给 Catalogue.php 中的变量 $product_id。感谢您的帮助。
最佳答案
您可以添加一个不可见的表单:
<script>
function productInfo(key) {
//Send key to catalogue.php
document.getElementById( "key" ).value = key;
document.getElementById( "frm" ).submit(); // SUBMIT FORM.
}
</script>
<form action="catalogue.php" method="post" id="frm"
style="display:none" target="_blank">
<input type="text" id="key" name="key"/>
</form>
catalogue.php 需要一点点改变:
<?php
$product_id = $_POST[ "key" ]; //<================== VALUE FROM THE INVISIBLE FORM.
$sql = "SELECT Name, Price FROM Library.Products WHERE ProductID = " . $product_id;
echo "<table border=\"1\" padding=\"3\" width=\"650px\"><tr><th>Name</th><th>Description</th><th>Price</th><th width=\"80px\">Image</th></tr>";
echo "<tr>";
echo "<td>" .$product_id . "</td>";
echo "<td> Hi</td>";
echo "<td></td>";
echo "<td align=\"center\"><img alt=\"\" src=\"productImages/".$product_id.".jpg\ width=\"120\" height=\"120\"/></td>";
echo "</tr>";
echo "</table><br>";
document.
?>
或者您可以使用 Ajax :
html 文件
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type = "text/javascript">
function myAjax ( key ) {
$.ajax( { type : 'POST',
data : { 'param' : key },
url : 'catalogue.php',
success: function ( data ) {
document.getElementById( "my_div" ).innerHTML = data;
},
error: function ( data ) {
alert( "error" );
}
});
}
function productInfo( key ) {
//Send key to catalogue.php
myAjax( key );
}
</script>
</head>
<body>
<button onclick="productInfo('123')">Click here to get the data</button>
<div id="my_div">
- data will show here -
</div>
</body>
</html>
目录.php
<?php
$key = $_POST[ "param" ];
echo "<table border='1'>" .
" <tr>" .
" <td>$key</td>" .
" <td>ABC</td>" .
" </tr>" .
"</table>";
?>
关于javascript - 如何使用 javascript 发布预览表的信息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37059603/