jQuery POST不传递POST变量？

Question

我有一个使用jQuery POST函数的表单，该表单使用switch函数将变量传递给PHP文件。 POSTed变量之一称为“指标” ...该变量由开关评估，并根据其值执行不同的大小写。

我已经验证了前端的所有功能，但是由于某种原因，我无法从PHP文件获得任何输出。 PHP文件中的开关堆栈可能工作正常，但是我只是看不到前端的任何输出。尝试从后端进行一个简单的变量转储，仍然是nada。有什么想法吗？谢谢大家

我已经将代码包含在我的表单中，提交表单时调用了jQuery函数，以及后端PHP开关：

FORM:

<form id="createAcc" onsubmit="return createAccResults();" style="height: 800px; top: 53%;">
            <input type="submit" id="createAccSubmit" name="createAccSubmit" value="Submit"></br>
            <h3 id="usernameTxt">Create username</h3>
            <p id="instructions">(Any length & combo of letters and numbers)</p>
            <input id="userName" name="userName" type="text" value=""></br>
            <h3 id="emailTxt">Enter email address.</h3>
            <input id="email" name="email" type="text" value=""></br>
            <h3 id="pwTxt">Create password</h3>
            <p id="instructions">(Must be min. 6 char long & contain at least 1 number, 1 lowercase & 1 uppercase letter)</p>
            <input id="password" name="password" type="password" value=""></br>
            <h3 id="pwConfTxt">Confirm password</h3>
            <input id="passwordConf" name="passwordConf" type="password" value="">
            <h3 id="secQuestion1" style="font-family: cursive; font-style: italic; color: white;">Security Question 1:</h3>
            <p id="question1" style="font-family: cursive; font-style: italic; color: white;">What is your childhood nickname?</p>
            <input id="sQ1" name="sQ1" type="text" value="" style="width: 350px; height: 30px; border-radius: 20px;"></br>
            <h3 id="secQuestion2" style="font-family: cursive; font-style: italic; color: white;">Security Question 2:</h3>
            <p id="question2" style="font-family: cursive; font-style: italic; color: white;">Where were you born?</p>
            <input id="sQ2" name="sQ2" type="text" value="" style="width: 350px; height: 30px; border-radius: 20px;"></br>
        </form>



JQUERY POST:

function createAccResults() {
    $(document).ready(function() {
    var pw = document.getElementById("password").value;
    var indicator = 2;
    var eml = document.getElementById("email").value;
    var inpU = document.getElementById("userName").value;
    var inpPC = document.getElementById("passwordConf").value;
    conditionss = /(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,}/,
    conditions = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/,
    conditionU = /^[a-zA-Z0-9]+$/;
    if(!(conditionss.test(pw)) || !(conditions.test(eml)) || !(conditionU.test(inpU)) || !(pw==inpPC)) {
        document.getElementById('userName').value = "";
        document.getElementById('email').value = "";
        document.getElementById('password').value = "";
        document.getElementById('passwordConf').value = "";
        alert("Please complete form correctly");
    } else {
        $("#createAcc").css("display","none");
        $("#revealAcc").css("display","none");
        $("#uploadTrg").show();
        $.post("updateProfile.php", {un: inpU, pw: pw, eml: eml, indicator: indicator},
                    function(returned) {
                        document.getElementById("uploadTrg").innerHTML = returned;
                    });
            };
    });
    return false;
};



PHP SWITCH:

$UsrN = $_POST['un'];
$eml = $_POST['eml'];;
$pswrd = $_POST['pw'];
$usernameMatch = preg_match('/^[a-zA-Z0-9]+$/', $UserN);
$emailMatch = preg_match('/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/', $eml);
$pwMatch = preg_match('/(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,}/', $pswrd);
$query = "SELECT email FROM accounts WHERE username='$UserN' OR email='$eml' OR password='$pswrd'";
$results = $pdo->query($query);
$indicator = $_POST['indicator'];

switch($indicator) {
        case 2:
            if($results == 0 && $pwMatch == 1 && $emailMatch == 1 && $usernameMatch == 1) {
            $query4 = "INSERT INTO accounts (username, email, password, about) VALUES ('$userN', '$eml', '$pswrd', 'Add a little about yourself')";
            $results4 = $pdo->query($query4);
            $message = "Account created successfully! Please login";
            } else if ($usernameMatch === false || $emailMatch === false || $pwMatch === false) {
            $message = "Please complete form correctly";
            } else {
                $message = "Account info already taken";
            }
            echo "<p style='color: white; font-family: cursive; font-size: 35px; text-align: center;'>";
            echo $message;
            echo "</p>";
            break;
        case 3:
            SOME CODE THAT'S IRRELEVANT; PERTAINS TO ANOTHER JQUERY POST FUNCTION THAT WORKS FINE
        case 5:
            SOME CODE THAT'S IRRELEVANT; PERTAINS TO ANOTHER JQUERY POST FUNCTION THAT WORKS FINE
    }