Javascript - 複数のキーオブジェクトを持つ配列を減らす

Question

Javascript配列を変更して、同じ値を持つ要素を指定して他のプロパティをコンマ区切りの文字列として保持する方法でオブジェクトをマージします、JSON文字列、または配列です。基本的に、私はこのオンにする：このに

[ 
    { 
     "language" : "english", 
     "type" : "a", 
     "value" : "value1" 
    }, 
    { 
     "language" : "english", 
     "type" : "a", 
     "value" : "value2" 
    }, 
    { 
     "language" : "english", 
     "type" : "b", 
     "value" : "value3" 
    }, 
    { 
     "language" : "spanish", 
     "type" : "a", 
     "value" : "valor1" 
    } 
] 

を：

[ 
    { 
     "language" : "english", 
     "type" : "a", 
     "value" : ["value1" , "value2"] // A Json string is welcome too 
    }, 
    { 
     "language" : "english", 
     "type" : "b", 
     "value" : "value3" 
    }, 
    { 
     "language" : "spanish", 
     "type" : "a", 
     "value" : "valor1" 
    } 
] 

Iは、スニペットに与えられたオブジェクトをアップサート、その後、反復処理やフィルタリングを試してみました。しかし、私はよりエレガントな方法があるかどうか疑問に思うそれを行うには。

P.S. EcmaScript6と追加のJSライブラリの提案も歓迎します。

var originalArray = [ 
 
\t { 
 
\t \t "language" : "english", 
 
\t \t "type" : "a", 
 
\t \t "value" : "value1" 
 
\t }, 
 
\t { 
 
\t \t "language" : "english", 
 
\t \t "type" : "a", 
 
\t \t "value" : "value2" 
 
\t }, 
 
\t { 
 
\t \t "language" : "english", 
 
\t \t "type" : "b", 
 
\t \t "value" : "value3" 
 
\t }, \t 
 
\t { 
 
\t \t "language" : "spanish", 
 
\t \t "type" : "a", 
 
\t \t "value" : "valor1" 
 
\t } 
 
]; 
 

 
var resultingArray = []; 
 

 
// iterate through the original array 
 
$.each(originalArray, function(i, val) { 
 
    // apply filter on key properties (i.e. language and type) 
 
    var result = resultingArray.filter(function(obj) { 
 
    return (obj.language === val.language && obj.type === val.type); 
 
    }); 
 
    // if a record exists, update its value 
 
    if (result.length === 1) { 
 
    result[0].value += (", " + val.value); 
 
    } 
 
    // else, add value 
 
    else if (result.length === 0) { 
 
    resultingArray.push(val); 
 
    } 
 
    // if multiple rows exist with same key property values... 
 
    else { 
 
    alert("Too many records with language '" + val.language + "' and type '" + val.type + "'"); 
 
    } 
 
}); 
 

 
console.log(JSON.stringify(resultingArray));

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>

Answer 1

これは何が必要でしょうか？

var baseData= [ 
 
    { 
 
     "language" : "english", 
 
     "type" : "a", 
 
     "value" : "value1" 
 
    }, 
 
    { 
 
     "language" : "english", 
 
     "type" : "a", 
 
     "value" : "value2" 
 
    }, 
 
    { 
 
     "language" : "english", 
 
     "type" : "b", 
 
     "value" : "value3" 
 
    }, 
 
    { 
 
     "language" : "spanish", 
 
     "type" : "a", 
 
     "value" : "valor1" 
 
    } 
 
]; 
 

 
var newData = []; 
 
baseData.forEach(function(item, index) { 
 
    if (newData.length === 0) { 
 
    newData.push(item); 
 
    
 
    } else { 
 
    var dIndex = -1; 
 
    newData.forEach(function(itm, idx) { 
 
     if (item.language === itm.language && item.type === itm.type) dIndex = idx; 
 
    }); 
 
    
 
    if (dIndex !== -1) { 
 
     var oldValue = newData[dIndex].value; 
 
     
 
     if (typeof(oldValue).toString() === 'string') { 
 
     newData[dIndex].value = [oldValue, item.value]; 
 
     } 
 
    } else { 
 
     newData.push(item); 
 
    } 
 
    } 
 
}); 
 
console.log(newData);