jQuery全局变量

Question

我正试图"全球化"我的变量在多个函数中使用它们，但没有结果。我哪里错了?非常感谢!

代码如下:

var my_sidebar_clicked = $('#dash #sidebar ul#main_menu li');
var my_dash_main_content = $('#dash > #main_content');

function mainmenu_selection() {
            //var my_sidebar_clicked = $('#dash #sidebar ul#main_menu li');
            //var my_dash_main_content = $('#dash #main_content');
            my_sidebar_clicked.children().click(function() {
                var el = $(this);
                var mylink = el.attr('href');
                $('#dash #sidebar ul#main_menu li a').removeClass('current');
                $(this).addClass('current');
                //$('#dash #main_content').load("ajax/" + mylink);
                my_dash_main_content.html('<img class="loader_img" src="common/img/ajax-loader.gif" />');
                my_dash_main_content + $(".loader_img").fadeIn(200);
                my_dash_main_content.load("ajax/" + mylink, function(response, status, xhr) {
                        if (status == "error") {
                                var msg = "Oops... sembra esserci un problema, ti preghiamo di riprovare ";
                                my_dash_main_content.html("<h4 class='error_msg'>" + msg + "</h4>"/* + xhr.status + " " + xhr.statusText*/);
                        }
                });
                return false;
            });
}

Answer 1

大胆猜测，将变量初始化放在文档准备好后执行的块中可以解决问题。

试着这样来代替前两行:

$(function() {
    window.my_sidebar_clicked = $('#dash #sidebar ul#main_menu li');
    window.my_dash_main_content = $('#dash > #main_content');
});