我有一個物件陣列，其中有keypaid。我想對所有物件應用折扣，期望使用回圈支付價值更高的物件。
var booking = [
{id:1,paid:200,currency:'USD'},
{id:2,paid:99,currency:'USD'},
{id:3,paid:100,currency:'USD'},
]
在上面的物件名稱陣列上，booking我想通過discount:true在該物件中添加鍵來創建回圈并應用折扣，但更高paid值的物件除外。
這就是我在回圈后想要的
var booking = [
{id:1,paid:200,currency:'USD'},
{id:2,paid:99,currency:'USD',discount:true},
{id:3,paid:100,currency:'USD',discount:true},
]
uj5u.com熱心網友回復：
paid如有必要，您可以先獲取最大值，然后再應用新屬性。
const
booking = [{ id: 1, paid: 200, currency: 'USD' }, { id: 2, paid: 99, currency: 'USD' }, { id: 3, paid: 100, currency: 'USD' }],
max = Math.max(...booking.map(({ paid }) => paid)),
result = booking.map(o => ({ ...o, ...o.paid === max || { discount: true } }));
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }轉載請註明出處，本文鏈接：https://www.uj5u.com/shujuku/512792.html