摘要： let arr = [1, 3, 5, 1, 7, 9, 9] for (let i = 0; i < arr.length; i++) { for (let j = i + 1; j < arr.length; j++) { if (arr[i] > arr[j]) { let three = a 阅读全文

摘要： let arr = [1, 3, 5, 1, 7, 9, 9] for (let i = 0; i < arr.length; i++) { for (let j = i + 1; j < arr.length; j++) { if (arr[i] == arr[j]) { arr.splice(i 阅读全文

摘要： 最近遇到求和 旁边黑丝小姐姐说用reduce比较快 话不多说 直接上代码 let arr = [ { age: 12, name: '锅盖' }, { age: 56, name: '香锅' }, { age: 122, name: '麻辣烫' } ] let sum = arr.reduce((t 阅读全文