javascript日期字符串转换为时间戳的5种方法总结

function dateStringToTimestamp(str) {
  return new Date(str).getTime();
}

console.log(dateStringToTimestamp("2023-04-01T12:00:00Z")); // ISO 8601格式

function customDateStringToTimestamp(str) {
  const [year, month, day, hour, minute, second] = str.split(/[- :]/);
  return new Date(year, month - 1, day, hour, minute, second).getTime(); // 注意月份减1
}

console.log(customDateStringToTimestamp("2023-04-01 12:00:00"));

function regexDateStringToTimestamp(str) {
  const match = str.match(/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})/);
  if (match) {
    return new Date(match[1], match[2] - 1, match[3], match[4], match[5], match[6]).getTime();
  }
  return null; // 或者抛出错误处理
}

console.log(regexDateStringToTimestamp("2023-04-01T12:00:00"));

function dateStringToTimestampWithParse(str) {
  return Date.parse(str);
}

console.log(dateStringToTimestampWithParse("2023-04-01T12:00:00Z"));

// 需要先引入moment.js库
const moment = require('moment');
function dateStringToTimestampMoment(str) {
  return moment(str).valueOf();
}

console.log(dateStringToTimestampMoment("2023-04-01T12:00:00Z"));

// 需要先引入date-fns库
import { parseISO, format } from 'date-fns';
function dateStringToTimestampDateFns(str) {
  return parseISO(str).getTime();
}

console.log(dateStringToTimestampDateFns("2023-04-01T12:00:00Z"));