Safari错误。 Javascript ajax json对象 - 无法获取属性。对象可能不再存在

Question

我有一个对php后端的Ajax调用。它在chrome中工作得很好但是当我在safari中运行它时，我得到一个'无法获取属性，对象可能不再存在'错误代码中的这一行 -

dataType：“JSON”，

这是功能。可能真的很简单。我实际上在网上找到了这个代码并重新利用它。不是真正的开发人员只是捏造我的方式:)

任何提示将非常感谢！正如我所说，Chrome中没有错误。

谢谢戴夫

            function insertProjectData() {

            var projectuid=$("#projectuid").val();
            var projectIdentifier=$("#projectIdentifier").val();
            var projectPIRDate=$("#projectPIRDate").val();
            var projectName=$("#projectName").val();
            var projectManagerName=$("#projectManagerName").val();
            var projectSponsorDept=$("#projectSponsorDept").val();
            var projectSponsorName=$("#projectSponsorName").val();
            var projectSponsorContact=$("#projectSponsorContact").val();
            var projectGTMDate=$("#projectGTMDate").val();
            var projectTargetBudget=$("#projectTargetBudget").val();
            var projectActualCost=$("#projectActualCost").val();
            var projectScope=$("#projectScope").val();
            var projectScopeDelivered=$("#projectScopeDelivered").val();

            if ($('#projectDeliveredTimeline').is(':checked')) {
                var projectDeliveredTimeline = "Yes";
            }
            else {
                var projectDeliveredTimeline = "No";
            }
            if ($('#projectDeliveredPlan').is(':checked')) {
                var projectDeliveredPlan = "Yes";
            }
            else {
                var projectDeliveredPlan = "No";
            }
            var projectComments=$("#projectComments").val();

            // AJAX code to send data to php file.
            $.ajax({
                type: "POST",   q
                url: "insert-projectdata.php",
                data: {projectuid:projectuid,projectIdentifier:projectIdentifier,projectPIRDate:projectPIRDate,projectName:projectName,projectManagerName:projectManagerName,projectSponsorDept:projectSponsorDept,projectSponsorName:projectSponsorName,projectSponsorContact:projectSponsorContact,projectGTMDate:projectGTMDate,projectTargetBudget:projectTargetBudget,projectActualCost:projectActualCost,projectScope:projectScope,projectScopeDelivered:projectScopeDelivered,projectDeliveredTimeline:projectDeliveredTimeline,projectDeliveredPlan:projectDeliveredPlan,projectComments:projectComments},
                dataType: "JSON",
                success: function(data) {
                    closeitem(projectarea);
                    $("#ProjectSaved").show();
                    setTimeout(function() { $("#ProjectSaved").hide(); }, 2500,);
                    $('form[name=projectForm]').get(0).reset();
                    window.location.replace("lessons.php");
                },
                error: function(err) {
                    console.log(err);
                }

            });
        }

奇怪的是这（另一页）工作正常！？...

function insertAreaData() {
            var areauid=$("#areauid").val();
            var areaName=$("#areaName").val();
            var areaDesc=$("#areaDesc").val();

            // AJAX code to send data to php file.
            $.ajax({
                type: "POST",
                url: "insert-areadata.php",
                data: {areauid:areauid,areaName:areaName,areaDesc:areaDesc},
                dataType: "JSON",
                success: function(data) {
                    closeitem(areaarea);
                    $("#AreaSaved").show();
                    $('form[name=AreaForm]').get(0).reset();
                    setTimeout(function() { $("#AreaSaved").hide(); }, 2000,);
                    window.location.replace("lessons.php");
                },
                error: function(err) {
                    console.log(err);
                }

            });

        }

编辑：我现在已经在Internet Explorer中测试并遇到了同样的问题。