将格式为YYYYMMDDHHMMSS的字符串转换为JavaScript Date对象

const str = "20220101123000";
const date = new Date(str.slice(0, 4), str.slice(4, 6) - 1, str.slice(6, 8), str.slice(8, 10), str.slice(10, 12), str.slice(12, 14));