javascript - jQuery ajax 不发送数组

Question

我试图通过 AJAX 发送数组中的一些数据以将其保存到数据库，我以这种方式构建数组:

$( "#saveordering" ).button().click(function( event ) {
            event.preventDefault();

            var data = document.getElementById('tabs');
            var categories = data.getElementsByTagName("div");
            var categoryArray = new Array();

            for (var i=0; i < categories.length; i++) { //Loop door de categoriëen
                var category = categories[i];
                var categoryId = category.getAttribute('id');

                categoryArray[i] = new Array();

                categoryArray[i]['id'] = categoryId;
                categoryArray[i]['forums'] = new Array();

                var forums = category.getElementsByTagName("li");
                for (var j=0; j < forums.length; j++) { //Loop door de forums
                    var forum = forums[j];
                    var forumId = forum.getAttribute('id');
                    categoryArray[i]['forums'][j] = new Array();
                    categoryArray[i]['forums'][j]['id'] = forumId;
                }
            }
            $.ajax({
                type: 'POST',
                url: "ajax/updateboardorder.php",
                dataType: 'json',
                data: {ldelim}"categories" : categoryArray{rdelim} ,
                success: function(data) {
                }
            }); 
        });

但没有发送任何内容，当我在 PHP 中执行 var_dump($_POST) 时，我得到:

array (size=0) empty

我做错了什么？

Answer 1

看这段代码

categoryArray[i] = new Array();
categoryArray[i]['id'] = categoryId;
categoryArray[i]['forums'**strong text**

嗯，那不是“数组”，你在做一个关联数组

categoryArray[i] = {};
categoryArray[i]['id'] = categoryId;
categoryArray[i]['forums'] = {};

或

categoryArray[i] = {
    "id" : categoryId,
    "forums" : {}
};

你想要一个对象。与您稍后在代码中使用 forums 执行此操作的位置相同。