JS全局变量作为未定义的-jquery mobile传递

Question

我试图连接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：未定义的

如何从第一个文件中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，那么它会正确传递，但函数内部的任何内容都会传递为未定义。

**

我是如何解决的：

**

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。在language.jss中，您可以在设置完变量后调用init函数。我还建议您为全局变量命名名称空间。把它们放在一个巨大的物体里，也许有一个独特的名字。这样可以避免在全局对象中放入太多全局变量，并使其难以跟踪。

Answer 2

上述解决方案只能在init函数内部运行，因此，如果您需要在main.js中使用其他函数中的变量，那么可以这样做：

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);