javascript - $.post 不断重定向我

Question

我对 jquery $.post 函数有疑问。我经常使用这个函数，同样的函数工作正常，除了在一种情况下，我不明白为什么它在脚本执行后一直重定向我，这里是 js 代码:

var record;    

$('.delbtt').on('click', function(e){
        e.preventDefault();
        var deleteid = $(this).parent().parent().find('#id').text();
        record = $(this).parent().parent();
        $('#delrecord').empty().val(deleteid);
    });

$(document).on('submit', '#delteform', function() {
        var formData = $(this).serialize();
        $.post('includes/delete.php',formData,processData);
        function processData(data){
            record.remove();    
        };
    });

HTML:

<!-- Modal -->
<div class="modal fade" id="deleteFormModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <form id="deleteform" class="form-horizontal" role="form" action="includes/delete.php" method="POST"> <!-- -->
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                <h4 class="modal-title">Delete record</h4>
            </div>
            <div class="modal-body">
                    <p>Are you sure you want to delete this person?</p>
            </div>
                <input type="hidden" id="delrecord" name="delrecord" value="" />
            <div class="modal-footer">
                <button type="button" class="btn btn-default empty" data-dismiss="modal">Cancel</button>
                <button id="delentry" type="submit" class="btn btn-danger">Delete Person</button>
            </div>
        </form>
        </div><!-- /.modal-content -->
    </div><!-- /.modal-dialog -->
</div><!-- /.modal -->

我知道函数执行成功了，因为如果我把 alert("Why is this not working?"); 放在 record.remove(); 之后，我可以看到警报并在后台执行代码，但它没有停留在同一页面，而是将我重定向到“includes/delete.php”。我尝试禁用我的 JS 中的所有其他 $.post 函数，我尝试使用 $('#deleteform').submit()，我尝试将它放在我的主要 $ 之外(document).ready(function() {}); 相同的结果...总是相同的结果它在函数完成后重定向我而不是停留在页面上。有谁知道我为什么会出现这种行为？

php代码:

<?php
include('budgetprop/Initialize.php');
Database::GetInstance()->ConnectToServer($errors);
$record = $_POST['delrecord'];

# CONNECT TO DB
if(Database::GetInstance()->ConnectToServer($errors)){
    $insertSQL1 = "DELETE FROM salaries WHERE record_id = '".$record."' ";
    $stmt1 = sqlsrv_query(Database::GetInstance()->databaseConnection, $insertSQL1);
    # IF THERE IS AN ERROR
    if(!$stmt1){
                echo "Error, cannot delete record"; 
    }else{
        Database::GetInstance()->LastInsertId($stmt1);
    }
    # IF ALL QUERIES WERE SUCCSESSFUL, COMMIT THE TRANSACTION, OTHERWISE ROLLBACK
    if($stmt1 && !$errors){
        sqlsrv_commit(Database::GetInstance()->databaseConnection);
        # FREE THE STATEMENT
        Database::GetInstance()->FreeDBStatement($stmt1);
        echo "success";
        return true;
    }else{
        sqlsrv_rollback(Database::GetInstance()->databaseConnection);
        # FREE THE STATEMENT
        Database::GetInstance()->FreeDBStatement($stmt1);
        return false;
    }
    # NO CONNECTION WAS MADE
}else{
    return false;
};
?>

preventDefault() 也不起作用

Answer 1

听起来您的表单仍在提交中，因此重定向。您可以使用 preventDefault()...

停止它

$(document).on('submit', '#deleteform', function(e) {
    e.preventDefault();
    var formData = $(this).serialize();
    $.post('includes/delete.php',formData,processData);
    function processData(data){
        record.remove();    
    };
});