JavaScript:向数组元素添加键

Question

如何使用map函数将键分配给数组元素？

arr = [1,2,3,4,5,6,7];
// what i want.
arr = [{t: 1}, {t: 2}, {t: 3}, {t: 4}, {t: 5}, {t: 6}, {t: 7}, ]

Answer 1

您可以使用.map函数：

arr = [1,2,3,4,5,6,7];
let list = arr.map(function (e) {
return {t:e};
});
console.log(list);