使用lodash將數組均勻分塊

我得到了countries.json，我按照規範將其分成4列顯示。使用lodash將數組均勻分塊

我正在尋找一種解決方案，將數組元素均勻分佈到所有四個數組中。

樣品的jsfiddlehttps://jsfiddle.net/5tkjLs7b/

如果我從JSON數據刪除一個國家，我將結束-了6個陣列。但預期只有4個陣列。

此外，數據應均勻分佈。

例如：我得到63項* 4陣列+ 3項* 1陣列全部 country.json。

var countries = [ 
    {"name": "Afghanistan", "code": "AF"}, 
    {"name": "Åland Islands", "code": "AX"}, 
    {"name": "Albania", "code": "AL"}, 
    {"name": "Algeria", "code": "DZ"}, 
    {"name": "American Samoa", "code": "AS"}, 
    {"name": "AndorrA", "code": "AD"}, 
    {"name": "Angola", "code": "AO"}, 
    {"name": "Anguilla", "code": "AI"}, 
    {"name": "Antarctica", "code": "AQ"}, 
    {"name": "Antigua and Barbuda", "code": "AG"}, 
    {"name": "Argentina", "code": "AR"}, 
    {"name": "Armenia", "code": "AM"}]; 

    chunkedCountries = _.chunk(countries, countries.length/4) 
    console.log(chunkedCountries);

來源

2016-09-29 Alaksandar Jesus Gene

您可以使用for循環和slice()得到期望的結果。

var countries = [ 
 
    {"name": "Afghanistan", "code": "AF"}, 
 
    {"name": "Åland Islands", "code": "AX"}, 
 
    {"name": "Albania", "code": "AL"}, 
 
    {"name": "Algeria", "code": "DZ"}, 
 
    {"name": "American Samoa", "code": "AS"}, 
 
    {"name": "AndorrA", "code": "AD"}, 
 
    {"name": "Angola", "code": "AO"}, 
 
    {"name": "Anguilla", "code": "AI"}, 
 
    {"name": "Antarctica", "code": "AQ"}, 
 
    {"name": "Antigua and Barbuda", "code": "AG"}, 
 
    {"name": "Argentina", "code": "AR"}, 
 
    {"name": "Armenia", "code": "AM"}]; 
 

 

 
var c = countries.length/4; 
 
var result = []; 
 

 
for(var i = 0; i < countries.length; i+=c) { 
 
    result.push(countries.slice(i, i+c)); 
 
} 
 

 
console.log(result)

來源

2016-09-29 08:29:42

使用lodash將數組均勻分塊

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