我有兩個物件的動態數組，如下所示（這是一個包含n個物件的動態數組）：
serverArray = [ {"id":"field1","mandatory":false,"visible":false}, {"id":"field2","mandatory":false,"visible":false}, {"id":"field3","mandatory":false,"visible":false}, {"id":"field4","mandatory":false,"visible":false} ] localArray = [ {"id":"field1"}, {"id":"field2","mandatory":false}, {"id":"field3","mandatory":true,"visible":false}, {"id":"field4","mandatory":false,"visible":true}, {"id":"field5","mandatory":false,"visible":true}, {"id":"field6","mandatory":true,"visible":false}, ] 我將這兩個數字組合併為具有相同ID的對象，如下所示：
for (let x = 0; x < serverArray.length; x ) { for (let y = 0; y < localArray.length; y ) { if (serverArray[x].id == localArray[y].id) { // serverArray[x].id/localArray[y].id = 'field1', 'field2' for (let key in localArray[y]) { //key = 'id', 'mandatory', etc serverArray[x][key] = localArray[y].hasOwnProperty(key) ? localArray[y][key] : serverArray[x][key]; //Override with local field attribute value (if present) in final returned response } } } } 然而，我還希望在最終的serverArray中包含那些不在serverArray中的ID（即上面範例中的field5中的ID（即上面範例中的field5，field6），而這些欄位也會失敗上述條件（即serverArray[x].id == localArray[y].id），我希望這些欄位也作為最終serverArray的一部分，即在我的最終serverArray中還應包含以下兩個物件：
{"id":"field5","mandatory":false,"visible":true}, {"id":"field6","mandatory":true,"visible":false}, 有沒有辦法實現這個要求？
在循環遍歷兩個陣列時，您可以建立一個新物件來追蹤合併的欄位。在初始合併之後，您可以再次遍歷localArray，以識別尚未合併到serverArray中的字段，並將它們添加到合併結果中。
let mergedFields = {}; // 根据共同的ID进行初始合并 for (let y = 0; y < localArray.length; y++) { const localField = localArray[y]; const serverField = serverArray.find(field => field.id === localField.id); if (serverField) { mergedFields[localField.id] = { ...serverField, ...localField }; } else { mergedFields[localField.id] = localField; } } // 添加在mergedFields中不存在的剩余localArray字段 for (let y = 0; y < localArray.length; y++) { const localField = localArray[y]; if (!mergedFields.hasOwnProperty(localField.id)) { mergedFields[localField.id] = localField; } } // 将mergedFields对象转换回数组 const mergedServerArray = Object.values(mergedFields); console.log(mergedServerArray);