<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> </body> <script> let data = [{ "usedNum": 1, "noUsedNum": 9, "sEnterpriseQutos": { "id": 5, "serviceTag": "VPC", "serviceTagNum": 10, "projectSetId": "8" } }, { "usedNum": 1, "noUsedNum": 12, "sEnterpriseQutos": { "id": 6, "serviceTag": "ECS", "serviceTagNum": 13, "projectSetId": "8" } }, { "usedNum": 1, "noUsedNum": 12, "sEnterpriseQutos": { "id": 7, "serviceTag": "ECS", "serviceTagNum": 13, "projectSetId": "8" } }, ] let nowData = data.map(item => { return { usedNum: item.usedNum, noUsedNum: item.noUsedNum, serviceTag: item.sEnterpriseQutos.serviceTag, sEnterpriseQutos: { id: item.sEnterpriseQutos.id, sex: item.sEnterpriseQutos.id == 5 ? '男' : item.sEnterpriseQutos.id == 6 ? '女' : '保密', serviceTagNum: item.sEnterpriseQutos.serviceTagNum, projectSetId: item.sEnterpriseQutos.projectSetId, } } }) console.log("nowData") console.log(nowData) let arr = [1, '2', 3, '4', '5', '6.1', 6.2] let newArr = arr.map(Number) // parseInt不能直接使用 let newArr2 = arr.map(str => parseInt(str)) console.log("newArr") console.log(newArr) console.log(newArr2) let numbers = [1, 2, 3, 4]; let filteredNumbers = numbers.map((num, index) => { if (index < 2) { return num; }else{ return 6 } }); console.log("filteredNumbers") console.log(filteredNumbers) </script> </html>