试图弄清楚如何设置通用的JavaScript代码（应该很简单）

Question

嘿伙计们我写了一些javascript代码，现在我想从.cshtml文件中删除它并将其存储在自己的.js文件中。但是我不知道如何重新调用它。现在，在.cshtml文件中完美地运行的代码就是这个

<script type="text/javascript">
    $(document).ready(function () {
        $('.deletebutton2').click(function () {
            var ParamVal = event.target.id;
            var JQajaxurl = $("#ajaxurl").text();
            $('#popup').attr('title', 'Confirm Delete').text('Are you sure you want to Delete?').dialog({
                buttons: {
                    'Delete': function () {
                        $.ajax({
                            type: 'POST',
                            url: JQajaxurl + ParamVal,

                            success: function (data) {
                                if (window.location.href.indexOf("Detail") > 0) {
                                    parent.history.back();
                                    return false;
                                }
                                else {
                                    location.reload();
                                }
                            },
                            error: function (request, status, error) {
                                alert(request.responseText);
                                alert(textStatus);
                                alert(errorThrow);
                            }
                        });
                    },
                    'Cancel': function () { $(this).dialog('close') }
                },
                closeOnEscape: true, draggable: false, resizable: false, show: 'fade', modal: true, position: 'center'
            });
            $(".ui-dialog-titlebar-close").remove();
        });
    });
    </script>