PHP/Javascript无法正确地在文件夹中上下移动

所以我有一个简单的联系方式。目录中有main.html和2个文件夹。folder1包含js代码，folder2包含php文件。js文件调用php文件来分析一些表单数据，php文件将其返回给js文件，js文件最终在main.html上输出

当从main.html调用JS文件时，不会从php文件发回任何数据。这就是我在JS文件中使用的内容

 $.post("../folder2/contact_form.php", 

但是，如果我将main.html放在文件夹3中，并使用这一行调用JS文件，它就会工作

 <script src="../test/contact_form.js"></script>

---

联系_form.php

<?php
//Fetching Values from URL
$name = $_POST['name1'];
$email = $_POST['email1'];
$message = $_POST['message1'];
$subject = $_POST['subject1'];
//sanitizing email
$email = filter_var($email, FILTER_SANITIZE_EMAIL);
//After sanitization Validation is performed
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {

// To send HTML mail, the Content-type header must be set
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From:' . $email. "\r\n"; // Sender's Email
$headers .= 'Cc:' . $email. "\r\n"; // Carbon copy to Sender
$template = '<div style="padding:50px; color:white;">Hello ' . $name . ',<br/>'
. '<br/>Thank you...! For Contacting Us.<br/><br/>'
. 'Name:' . $name . '<br/>'
. 'Email:' . $email . '<br/>'
. 'Subject:' . $subject . '<br/>'
. 'Message:' . $message . '<br/><br/>'
. 'This is a Contact Confirmation mail.'
. '<br/>'
. 'We will contact you as soon as possible .</div>';
$sendmessage = "<div style=\"background-color:#7E7E7E; color:white;\">" . $template . "</div>";
// message lines should not exceed 70 characters (PHP rule), so wrap it
$sendmessage = wordwrap($sendmessage, 70);

// Send mail by PHP Mail Function
mail("asd@gmail.com", $subject, $sendmessage, $headers);
echo "Your message was sent successfully! Thank-You for contacting us!";

} else {
echo "<span>Please enter a valid email.</span>";
}

?>

---

如果文件夹结构为：

root/main.html

root/css/contact.css

root/test/contact_form.js

$(document).ready(function(){  
$("#submit").click(function(){
    var name = $("#name").val();
    var email = $("#email").val();
    var message = $("#message").val();
    var subject = $("#subject").val();

    $("#returnmessage").empty(); //To empty previous error/success message.
//checking for blank fields 
if(name==''||email==''||subject=='')
{
   alert("Please Fill Required Fields"); 
}
else{
// Returns successful data submission message when the entered information is stored in database.
$.post("../test2/contact_form.php",{ name1: name, email1: email, message1:message, subject1: subject},
   function(data) {
                $("#returnmessage").append(data);//Append returned message to message paragraph
                    if(data=="Your message was sent successfully! Thank-You for contacting us!"){
                        $("#form")[0].reset();//To reset form fields on success
                    }
            });
         }

});
});

root/test2/contact_form.php

<?php
//Fetching Values from URL
$name = $_POST['name1'];
$email = $_POST['email1'];
$message = $_POST['message1'];
$subject = $_POST['subject1'];
//sanitizing email
$email = filter_var($email, FILTER_SANITIZE_EMAIL);
//After sanitization Validation is performed
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {

// To send HTML mail, the Content-type header must be set
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From:' . $email. "\r\n"; // Sender's Email
$headers .= 'Cc:' . $email. "\r\n"; // Carbon copy to Sender
$template = '<div style="padding:50px; color:white;">Hello ' . $name . ',<br/>'
. '<br/>Thank you...! For Contacting Us.<br/><br/>'
. 'Name:' . $name . '<br/>'
. 'Email:' . $email . '<br/>'
. 'Subject:' . $subject . '<br/>'
. 'Message:' . $message . '<br/><br/>'
. 'This is a Contact Confirmation mail.'
. '<br/>'
. 'We will contact you as soon as possible .</div>';
$sendmessage = "<div style=\"background-color:#7E7E7E; color:white;\">" . $template . "</div>";
// message lines should not exceed 70 characters (PHP rule), so wrap it
$sendmessage = wordwrap($sendmessage, 70);

// Send mail by PHP Mail Function
mail("asd@gmail.com", $subject, $sendmessage, $headers);
echo "Your message was sent successfully! Thank-You for contacting us!";

} else {
echo "<span>Please enter a valid email.</span>";
}

?>

那么您的URL就不需要
。/
例如：
$.post（“test2/contact_form.php”，{}，function（）{}）
js文件应该发布到相对于html文件的url。所以试试$.post（“folder2/contact_form.php”，@madalinivascu-你的意思是上一级：）谢谢它成功了！仍然不知道如何在不使用../向上移动目录的情况下访问php文件。要使用
。/
您需要将css、test和test2移动到root的父文件夹