如何將鍵值對數組轉換為以第一個數組的值作為鍵的對象？

Question

我的后端返回的數據如下。

   var permissions = [{"PermCode":"BOF","IsvalidPerm":true},{"PermCode":"CM","IsvalidPerm":false},{"PermCode":"CV","IsvalidPerm":true},{"PermCode":"DAS","IsvalidPerm":true},{"PermCode":"RPT","IsvalidPerm":true},{"PermCode":"VM","IsvalidPerm":true}]

我如何將其轉換為Objectof對象，如下所示

{BOF:true,CM:true, ...}

提前致謝。

Answer 1

您可以使用一些ES6語法，使用Object.assign ，spread語法，計算的屬性，然后它實際上具有非常實用的編程風格：

 var permissions = [{"PermCode":"BOF","IsvalidPerm":true},{"PermCode":"CM","IsvalidPerm":false},{"PermCode":"CV","IsvalidPerm":true},{"PermCode":"DAS","IsvalidPerm":true},{"PermCode":"RPT","IsvalidPerm":true},{"PermCode":"VM","IsvalidPerm":true}]; const result = Object.assign(...permissions.map( ({PermCode, IsvalidPerm}) => ({[PermCode]: IsvalidPerm}) )); console.log(result); 

Answer 2

盡管您可以在Array的文檔中找到答案（免責聲明：它是map ），但對於單線而言，語法有點棘手。

干得好 ：

 const data = [ {"PermCode":"BOF","IsvalidPerm":true}, {"PermCode":"CM","IsvalidPerm":false}, {"PermCode":"CV","IsvalidPerm":true}, {"PermCode":"DAS","IsvalidPerm":true}, {"PermCode":"RPT","IsvalidPerm":true}, {"PermCode":"VM","IsvalidPerm":true} ]; const formatted = data.map(item => ({[item.PermCode]: item.IsvalidPerm})); console.log(formatted); 

至於編輯，如果要創建對象，請使用reduce ：

 const data = [ {"PermCode":"BOF","IsvalidPerm":true}, {"PermCode":"CM","IsvalidPerm":false}, {"PermCode":"CV","IsvalidPerm":true}, {"PermCode":"DAS","IsvalidPerm":true}, {"PermCode":"RPT","IsvalidPerm":true}, {"PermCode":"VM","IsvalidPerm":true} ]; const formatted = data.reduce((acc, curr) => ({ ...acc, [curr.PermCode]: curr.IsvalidPerm }), {}); console.log(formatted); 

Answer 3

請始終在OP中顯示您的嘗試，以便我們了解您的移動方向。

您可以使用“ Array.map”和“ Object.assign”，如下所示

 var permissions = [{"PermCode":"BOF","IsvalidPerm":true},{"PermCode":"CM","IsvalidPerm":false},{"PermCode":"CV","IsvalidPerm":true},{"PermCode":"DAS","IsvalidPerm":true},{"PermCode":"RPT","IsvalidPerm":true},{"PermCode":"VM","IsvalidPerm":true}] let result = Object.assign(...permissions.map(d => ({ [d.PermCode]: d.IsvalidPerm}))) console.log(result)