我有一个 HTML 表格，允许用户编辑/保存表格中的任何行。 <td>之一在表行中只包含一个下拉列表，没有像所有其他列那样的实际文本。每当我点击保存时，我的 AJAX 请求都会将所有数据发送到 update.php很好，除了 <td>与下拉菜单。当我在我的 AJAX 成功函数中获取下拉列表的值时，如果我检查我的 PHP 错误日志，它说保存下拉列表值的变量 checkered , 未定义。
如何修复我的代码，使其也能读取我的 checkered 中的内容变量并通过我的 AJAX 请求发送它。
JavaScript(函数开始后的前两行是获取下拉选择值的内容):
$(document).on("click", "#table .edit", function () {
var $row = $(this).parents('tr');
var checkered = $row.find($(".selected")).val();
var $this = $(this);
$this.closest('tr').find('select').attr("disabled", false);
var tds = $this.closest('tr').find('td').filter(function () {
return $(this).find('.edit').length === 0;
});
if ($this.val() === 'Edit') {
$this.val('Save');
tds.not('.dropdown-select').prop('contenteditable', true);
} else {
var isValid = true;
var errors = '';
var elements = tds;
var dict = {};
elements.each(function (index, element) {
var type = $(this).attr('class');
var value = (element.tagName == 'INPUT') ? $(this).val() : $(this).text();
// ----- Switch statement that provides validation for each table cell -----
switch (type) {
case "species":
if (value) {
dict["Species"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Species\n";
}
break;
case "container":
if (value) {
dict["Container"] = value;
break;
}
else {
isValid = false;
errors += "Please enter Yes or No\n";
}
break;
case "supp-name":
if (value) {
dict["Supplier-Name"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Supplier Name\n";
}
break;
case "supp-sku":
if (value) {
dict["Supplier-SKU"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Supplier SKU\n";
}
break;
case "newsku":
if (value) {
dict["Current-SKU"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Current SKU\n";
}
break;
case "mill":
if (value) {
dict["Mill"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Mill\n";
}
break;
case "lead-time":
if (value) {
dict["Lead-Time"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Lead Time\n";
}
break;
case "less-than-unit-cost":
if (value) {
dict["Less-Than-Unit-Cost"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Less Than Unit Cost\n";
}
break;
case "unit-cost":
if (value) {
dict["Unit-Cost"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Unit Cost\n";
}
break;
case "mill-direct-cost":
if (value) {
dict["Mill-Direct-Cost"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Mill Direct Cost\n";
}
break;
case "unit-quantity":
if (value) {
dict["Unit-Quantity"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Unit Quantity\n";
}
break;
case "bundle-cost":
if (value) {
dict["Bundle-Cost"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid number\n";
}
break;
case "mixed-unit-price":
if (value) {
dict["6+-Mixed-Unit-Price"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid number\n";
}
break;
case "uom":
if (value) {
dict["UOM"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid UOM\n";
}
break;
case "mill-loc":
if (value) {
dict["Mill-Location"] = value;
break;
}
else {
isValid = false;
errors += "Please enter a valid Mill Location\n";
}
break;
case "id":
dict["ID"] = value;
break;
}
})
if (isValid) {
console.log(dict);
console.log(checkered);
$this.val('Edit');
tds.prop('contenteditable', false);
$this.closest('tr').find('select').attr("disabled", true);
var request = $.ajax({
type: "POST",
url: "update.php",
data: dict, checkered,
success: function(data){
console.log(dict);
console.log(checkered);
}
});
request.done(function (response, textStatus, jqXHR){
if(JSON.parse(response) == true){
console.log("row updated");
} else {
console.log("row failed to updated");
console.log(response);
console.log(textStatus);
console.log(jqXHR);
}
});
}
}
});
update.php :
$species = $_POST['Species'];
$container = $_POST['Container'];
$supp_name = $_POST['Supplier-Name'];
$supp_sku = $_POST['Supplier-SKU'];
$current_sku = $_POST['Current-SKU'];
$mill = $_POST['Mill'];
$lead_time = $_POST['Lead-Time'];
$less_than_unit_cost = $_POST['Less-Than-Unit-Cost'];
$unit_cost = $_POST['Unit-Cost'];
$mill_direct_cost = $_POST['Mill-Direct-Cost'];
$unit_quantity = $_POST['Unit-Quantity'];
$bundle_cost = $_POST['Bundle-Cost'];
$mixed_unit_price = $_POST['6+-Mixed-Unit-Price'];
$uom = $_POST['UOM'];
$mill_loc = $_POST['Mill-Location'];
$id = $_POST['ID'];
$selected = $_POST['checkered'];
$host="xxxxxxx";
$dbName="xxxx";
$dbUser="xxxxxxxxxxxx";
$dbPass="xxxxxxxxx";
$pdo = new PDO("sqlsrv:Server=$host;Database=$dbName", $dbUser, $dbPass);
$pdo->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
$sql = "UPDATE Example_Table SET [Species] = '$species',
[Container] = '$container',
[Supplier-Name] = '$supp_name',
[Supplier-SKU] = '$supp_sku',
[Current-SKU] = '$current_sku',
[Mill] = '$mill',
[Lead-Time] = '$lead_time',
[Less-Than-Unit-Cost] = '$less_than_unit_cost',
[Unit-Cost] = '$unit_cost',
[Mill-Direct-Cost] = '$mill_direct_cost',
[Unit-Quantity] = '$unit_quantity',
[Bundle-Cost] = '$bundle_cost',
[6+-Mixed-Unit-Price] = '$mixed_unit_price',
[UOM] = '$uom',
[Mill-Location] = '$mill_loc',
[Price-Selected] = '$selected'
WHERE ID = '$id'";
$stmt = $pdo->prepare($sql);
$result = $stmt->execute();
echo json_encode($result);
最佳答案
您定义的 ajax 数据有误，它必须是 Type: PlainObject or String or Array ，因此您需要将 chekered 值附加到 dic 对象:
dict['checkered'] = checkered;
var request = $.ajax({
type: "POST",
url: "update.php",
data: dict,
success: function(data){
console.log(dict);
console.log(checkered);
}
});
关于javascript - 通过 AJAX 发送变量后无法获取 $_POST 值，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47835607/