查找陣列，並得到結果

的指數我有此數組：查找陣列，並得到結果

var arr = [ 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Nessuno"}, {name: "Tegole", slug: "tegole", option: "Senza Tegole"}], id:430, price:"1000"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Nessuno"}, {name: "Tegole", slug: "tegole", option: "Rossi"}], id:431, price:"1025"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Nessuno"}, {name: "Tegole", slug: "tegole", option: "Verdi"}], id:432, price:"1025"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Trasparente"}, {name: "Tegole", slug: "tegole", option: "Senza Tegole"}], id:433, price:"1100"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Trasparente"}, {name: "Tegole", slug: "tegole", option: "Rossi"}], id:434, price:"1125"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Trasparente"}, {name: "Tegole", slug: "tegole", option: "Verdi"}], id:435, price:"1125"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Noce"}, {name: "Tegole", slug: "tegole", option: "Senza Tegole"}], id:436, price:"1100"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Noce"}, {name: "Tegole", slug: "tegole", option: "Rossi"}], id:437, price:"1125"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Noce"}, {name: "Tegole", slug: "tegole", option: "Verdi"}], id:438, price:"1125"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Castagno"}, {name: "Tegole", slug: "tegole", option: "Senza Tegole"}], id:439, price:"1100"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Castagno"}, {name: "Tegole", slug: "tegole", option: "Rossi"}], id:440, price:"1125"}, 
{attributes: [{name: "Impregnante", slug: "impregnante", option: "Castagno"}, {name: "Tegole", slug: "tegole", option: "Verdi"}], id:441, price:"1125"}]

而另一個數組：

var obj = [{name: "Impregnante", slug: "impregnante", option: "Trasparente"}, {name: "Tegole", slug: "tegole", option: "Rossi"}];

有人可以給我一個建議，如何找到OBJ在ARR並返回obj在哪裏... Thx提前，所以很抱歉的語言！

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2017-10-20 Letizia Rossi

嘗試以下操作：

const parseData = (arr, obj) => { 
    let found = arr.find(a => JSON.stringify(a.attributes) === JSON.stringify(obj)); 
    return found ? found.id : null; 
} 

console.log(parseData(arr, obj)); //434

提供對象淺層比較我以前JSON.stringify()。這種方法需要在操作中涉及的對象的屬性的嚴格順序。如果此要求不可接受，您可以用其他方式實施此類比較。

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2017-10-20 02:31:34 dhilt

Thx，它的工作很好，但是，如果我有這樣的數組像var obj2 = [{option：「Trasparente」}，{option：「Rossi」}] –

只要做一個比較嚴格：'let found = arr .find（a => a.attributes [0] .option === obj [0] .option && a.attributes [1] .option === obj [1] .option）;' - 取決於您的需要，比較器可以用百種方式定製 – dhilt

Thx，這個解決方案很簡單，但是在這種編程語言中，這是新手。 Thx再次！ –

，我認爲這可以幫助你：

獲取對象：

var arrFilter = arr.filter(function(a, b){ return JSON.stringify(a.attributes) == JSON.stringify(obj) }); 

// if you need the property ID 
arrFilter[0].id

獲取指數：

var idx = arr.findIndex(function(a, b){ return JSON.stringify(a.attributes) == JSON.stringify(obj) })

如果你願意，你可以使用箭頭功能（Lambda表達式）。

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2017-10-20 02:45:47 mejiajuanbta

查找陣列，並得到結果

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