[英]Grab value from html dropdown list, to pass into javascript function
1)用戶將在每個列表后單擊按鈕。 2)單擊該按鈕會將選定的值發送到javascript函數3)我想在javascript函數中獲取該值並使用ajax發送到php文件
問題如何使用onclick將html選定的值發送到javascript函數?
<select id="list">
<option value=" ">Select a Name </option>
<option value="Comfy">Comfy</option>
<option value="Tough">William Tough </option>
<option value="Soft">Soft</option>
</select>
<button onclick="updateDB(this.querySelector('list'.selected))">Click Me</button>
<select id="list2">
<option value=" ">Select a Name </option>
<option value="Comfy">Comfy</option>
<option value="Tough">William Tough </option>
<option value="Soft">Soft</option>
</select>
<button onclick="updateDB(this.querySelector('list2'.selected))">Click Me</button>
JavaScript函數:
function updateDB(number)
{
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","/updatequery.php?numbers",true);
xmlhttp.send();
}
查看OCI上的PHP文檔: http : //php.net/manual/en/function.oci-execute.php
執行選擇查詢后,您需要從數據庫中獲取行。
這里的示例應該可以幫助您入門:
<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, 'SELECT * FROM employees');
oci_execute($stid);
echo "<table border='1'>\n";
while ($row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS)) {
echo "<tr>\n";
foreach ($row as $item) {
echo " <td>" . ($item !== null ? htmlentities($item, ENT_QUOTES) : " ") . "</td>\n";
}
echo "</tr>\n";
}
echo "</table>\n";
?>
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