Converts a number to an array of digits, removing its sign if necessary.
- Use
Math.abs()
to strip the number’s sign. - Convert the number to a string, using the spread operator (
...
) to build an array. - Use
Array.prototype.map()
andparseInt()
to transform each value to an integer.
代码实现
const digitize = n => [...`${Math.abs(n)}`].map(i => parseInt(i));
digitize(123); // [1, 2, 3]
digitize(-123); // [1, 2, 3]