JS全局变量作为未定义传递-jQuery mobile

Question

我正在尝试连接2个js文件，但似乎无法将变量传递给它。

language.js文件：

//SELECT LANGUAGE
var login_user, login_pass, login_page_loading_msg, login_button, login_register;
var dash_log_out, dash_loading_msg, dash_open_lifetime, dash_remind, dash_nothanks, dash_logout, dash_revenue, dash_value, dash_campaign, dash_status, dash_layer, dash_popdown, dash_leadorsale;
var stat_date, stat_view, stat_clicks;
var prog_choose, prog_info, prog_payperorder, prog_ordervolume, prog_countries, prog_conditions, prog_share, prog_url, prog_copytoclipboard, prog_copiedtoclipboard, prog_success, prog_ok;
var reg_title, reg_earn, reg_startearning, reg_participfree, reg_generalinfo, reg_language, reg_prefuser, reg_email, reg_details, reg_usertitle, reg_fn, reg_ln, reg_street, reg_postcode, reg_country, reg_tandc, reg_submit;
var menu_dash, menu_stat, menu_prog, menu_news;

$.getJSON("data/res/en.json", function(json) {

//ATTRIBUTE LANGUAGE
    //LOGIN PAGE VARIABLES

    login_user = json['login']['user'];
    login_pass = json['login']['pass'];
    login_page_loading_msg = json['login']['page_loading_msg'];
    login_register = json['login']['register'];
    login_button = json['login']['login'];

    //DASHBOARD PAGE VARIABLES  

    dash_log_out = json['dashboard']['log_out'];
    dash_loading_msg = json['dashboard']['loading_msg'];
    dash_open_lifetime = json['dashboard']['open_lifetime'];
    dash_remind = json['dashboard']['remind'];
    dash_nothanks = json['dashboard']['nothanks'];
    dash_logout = json['dashboard']['logout'];
    dash_revenue = json['dashboard']['revenue'];
    dash_value = json['dashboard']['value'];
    dash_campaign = json['dashboard']['campaign'];
    dash_status = json['dashboard']['status'];
    dash_adklicks = json['dashboard']['adklicks'];
    dash_layer = json['dashboard']['layer'];
    dash_popdown = json['dashboard']['popdown'];
    dash_leadorsale = json['dashboard']['leadorsale'];

    $('#logOut').html(dash_log_out);
    $('.loading').html(dash_loading_msg);


    //STATISTICS PAGE VARIABLES

    stat_date = json['statistics']['date'];
    stat_view = json['statistics']['views'];
    stat_clicks = json['statistics']['clicks'];

    //PROGRAMS PAGE VARIABLES

    prog_choose = json['program']['choose'];
    prog_info = json['program']['info'];
    prog_payperorder = json['program']['payperorder'];
    prog_ordervolume = json['program']['ordervolume'];
    prog_countries = json['program']['countries'];
    prog_conditions = json['program']['conditions'];
    prog_share = json['program']['share'];
    prog_url = json['program']['url'];
    prog_copytoclipboard = json['program']['copytoclipboard'];
    prog_copiedtoclipboard = json['program']['copiedtoclipboard'];
    prog_success = json['program']['success'];
    prog_ok = json['program']['ok'];

    //REGISTRATION PAGE VARIABLES


    reg_title = json['registration']['title'];
    reg_earn = json['registration']['earn'];
    reg_startearning = json['registration']['startearning'];
    reg_participfree = json['registration']['participfree'];
    reg_generalinfo = json['registration']['generalinfo'];
    reg_language = json['registration']['language'];
    reg_prefuser = json['registration']['prefuser'];
    reg_email = json['registration']['email'];
    reg_details = json['registration']['details'];
    reg_usertitle = json['registration']['usertitle'];
    reg_fn = json['registration']['fn'];
    reg_ln = json['registration']['ln'];
    reg_street = json['registration']['street'];
    reg_postcode = json['registration']['postcode'];
    reg_country = json['registration']['country'];
    reg_tandc = json['registration']['tandc'];
    reg_submit = json['registration']['submit'];

    //MENU VARIABLES


    menu_dash = json['menu']['dash'];
    menu_stat = json['menu']['stat'];
    menu_prog = json['menu']['prog'];
    menu_news = json['menu']['news'];
}); 

main.js文件：

 [...]

console.log('login_button:'+ login_button);

 [...]

这给了我：login_button：undefined

如何在第一个文件的函数中传递变量值？ 如果我在获取json值的函数外部分配它，则它会正确传递，但函数内部的任何东西都会作为未定义传递。

**

我如何解决的：

**

language.js：

jQuery.extend({
    getValues: function(url) {
        var result = null;
        $.ajax({
            url: url,
            type: 'get',
            dataType: 'json',
            async: false,
            success: function(data) {
                result = data;
            }
        });
       return result;
    }
});
var results = $.getValues(yourUrlString);

Answer 1

您可以在main.js中定义一个init函数，在language.js之前加载main.js。 并且在language.js中，设置完变量后调用init函数。 我还建议您为全局变量命名空间。 将它们全部放在一个具有唯一名称的巨型物体中。 这样可以避免将过多的全局变量放入全局对象中并使其难以跟踪。

Answer 2

上面的解决方案仅在init函数内部起作用，因此，如果您需要在main.js中的其他函数中也使用变量，则可以采用以下方法：

jQuery.extend({
    getValues: function(url) {
        var result = null;
        $.ajax({
            url: url,
            type: 'get',
            dataType: 'json',
            async: false,
            success: function(data) {
                result = data;
            }
        });
       return result;
    }
});
var results = $.getValues(yourUrlString);