Question

//anything inside 'pagebeforecreate' will execute just before this page is rendered to the user's screen 

$(document).on("pagebeforecreate", function () {
    printheader(); //print the header first before the user sees his page
});

$(document).ready(function () {
    searchfriend();

    function searchfriend() {
    var url = serverURL() + "/getcategories.php";

    $.ajax({
        url: url,
        type: 'GET',
        dataType: 'json',
        contentType: "application/json; charset=utf-8",
        success: function (arr) {
            _getCategoryResult(arr);
        },
        error: function () {
            validationMsg();
        }
    });
}

function _getCategoryResult(arr) {

    var t; //declare variable t
    //loop for the number of results found by getcategories.php
    for (var i = 0; i < arr.length; i++) {
        //add a new row
        t.row.add([ //error
            "<a href='#' class='ui-btn' id='btn" + arr[i].categoryID + "'>Category</a>" //add a new [Category] button
        ]).draw(false);

        //We drew a [View] button. now bind it to some actions
        $("#btn" + arr[i].categoryID).bind("click", { id: arr[i].categoryID }, function (event) {
            var data = event.data;
            showcategory(data.id); //when the user clicks on the [View] button, execute showcategory()
        });

    }
    $("#categoryresult").show(); //show the results in the table searchresult
}
function showcategory(categoryID) {
    //alert(categoryID);
    window.location = "showuser.html?userid=" + userid;

}
});

第33行有一个错误：

＆＃34;未捕获的TypeError：无法读取属性＆＃39; row＆＃39;未定义＆＃34;

然而，似乎我不知道错误来自哪里。

无论如何我能解决这个问题吗？

Answer 1

变量t不是具有名为row的属性的对象。试试var t = { row: [] }

编辑：我道歉。我很困惑添加推送方法。

因此，您需要一个名为add的方法的对象，并将该对象分配给t

Answer 2

您似乎正在使用第三方jQuery插件DataTables。遵循DataTables的用法。

    var t; //declare variable t

应该是

    var t = $("#categoryresult").DataTable();

无法读取属性＆＃39; row＆＃39;未定义的

2 个答案: