Question

我有这样的目标:

countrylist:{
        regions:[
            {
                region: "Europe",
                countries: [
                    {
                        "country":"Albania",
                        "href":"eu",
                        "locale":"en_al"
                    },
                    {
                        "country":"France",
                        "href":"eu",
                        "locale":"en_fr"
                    },
                    {
                        "country":"Ireland",
                        "href":"eu",
                        "locale":"en_ie"
                    }]      
                },
                    region: "Asia",
                    countries: [
                        {
                            "country":"China",
                            "href":"as",
                            "locale":"ch"
                        },
                        {
                            "country":"Japan",
                            "href":"as",
                            "locale":"jp"
                        },
                        {
                            "country":"Thailand",
                            "href":"as",
                            "locale":"th"
                        }]      
                    }
                 ]}

如果你能看到整个目标,你就会看到,它按区域分类,每个区域内的国家都以字母顺序排列。然而,我需要把所有国家的下降菜单按字母顺序排列,而不是按区域分类。对这些物品进行分类的最清洁方法是什么?

我最初将该国推向一个空阵,并对此进行分类。然而,我需要保持国家领域与其相应领域和当地领域之间的关系。

Answer 1

Initialize an empty array, then go through the regions and append all the countries to that array. When you re done, sort the array.

var countries = [];
for(var i = 0; i < countrylist.regions.length; i++)
    Array.prototype.push.apply(countries, countrylist.regions[i].countries);

countries.sort(function(a, b) {
    return a.country > b.country;
});

console.log(countries);

http://jsfiddle.net/Jehsb/

Answer 2

你们需要走下结构,创造一系列的国家名称。然后,你可以打上阵列,并再次这样做。

var arr = [];
for(var i = 0; i < countryList.regions.length; i++){
    var countries = countryList.regions[i].countries;
    for(var j = 0; j < countries.length; j++){
        arr.push(countries[j].country);
    }
}

arr.sort();

如果你也需要其他信息,那么你需要的是所有国家目标的统一体,然后适用一种习惯功能:

var arr = [];
for(var i = 0; i < countryList.regions.length; i++){
    var countries = countryList.regions[i].countries;
    for(var j = 0; j < countries.length; j++){
        arr.push(countries[j]);
    }
}

arr.sort(function(xx,yy){ 
    return xx.country < yy.country ? -1 : 1;
});

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