将动态变量传递到数组中

Question

我想将从 AJAX 调用中获得的值添加到我提供给的数组中countrySelect()；我希望将cc以下示例中的变量传递到此数组中：preferredCountries: ['pk','gb', 'us']我试过了，但对我不起作用。$.ajax({  url: "https://geoip-db.com/jsonp",  jsonpCallback: "callback",  dataType: "jsonp",  success: function(location) {    var cc = location.country_code;    var ncc = cc.toLowerCase();  }});$("#country_selector").countrySelect({  preferredCountries: ['pk', 'gb', 'us']});

Answer 1

在收到响应后重构代码以进行同步。

var getGeoData = function (callback) {

    $.ajax({

      url: "https://geoip-db.com/jsonp",

      jsonpCallback: "callback",

      dataType: "jsonp",

      success: callback

    });

};

// Call the getGeoData function with callback

getGeoData(function (location) {

    var cc = location.country_code;

    var ncc = cc.toLowerCase();

    sessionStorage.setItem('lastname', ncc);

    $('#country_selector').attr('selected', true);

    

    const countrySelectConfig = {

        preferredCountries: ['pk', 'gb', 'us']

    };

    countrySelectConfig.preferredCountries.push(cc);

    $("#country_selector").countrySelect(countrySelectConfig);

});