// 将对象数组转换为二维数组
let data=[{a:1,b:2,c:3},{a:1,b:2,c:3},{a:1,b:2,c:3}]
const result = data.map(item => Object.values(item));
// 遍历result数组
let arrList = []
for (let i = 0; i < result.length; i++) {
arrList.push(result[i])
}