ES6版本
const countdown = (endTime, includeSeconds = true) => {
// 获取当前时间
const now = new Date();
// 将传入的结束时间字符串转换为日期对象
const endDateTime = new Date(endTime);
// 检查传入的时间字符串是否只包含日期(不包含时分秒)
if (endTime.trim().split(' ').length === 1) {
// 如果只有日期,则将时间设置为该日期的午夜(00:00:00)
endDateTime.setHours(0, 0, 0, 0);
}
// 计算当前时间与结束时间的时间差(单位:毫秒)
const timeDifference = endDateTime - now;
// 计算剩余的天数、小时数、分钟数和秒数
const days = Math.floor(timeDifference / (24 * 3600 * 1000));
const hours = Math.floor((timeDifference % (24 * 3600 * 1000)) / (3600 * 1000));
const minutes = Math.floor((timeDifference % (3600 * 1000)) / (60 * 1000));
// 构建倒计时对象
const countdownObject = {
days,
hours,
minutes,
};
// 根据includeSeconds参数决定是否包含秒数
if (includeSeconds) {
countdownObject.seconds = Math.floor((timeDifference % (60 * 1000)) / 1000);
}
return countdownObject;
}
console.log(countdown('2078-01-28')); // {days: 19775, hours: 8, minutes: 41, seconds: 9}
console.log(countdown('2078-01-28 12:30:00')); // {days: 19775, hours: 21, minutes: 11, seconds: 9}
console.log(countdown('2078-01-28', false)); // {days: 19775, hours: 8, minutes: 41}
ES5版本
function countdown(endTime, includeSeconds) {
// 设置默认值,如果includeSeconds未定义,则默认为true
includeSeconds = typeof includeSeconds !== 'undefined' ? includeSeconds : true;
// 获取当前时间
var now = new Date();
// 将传入的结束时间字符串转换为日期对象
var endDateTime = new Date(endTime);
// 检查传入的时间字符串是否只包含日期(不包含时分秒)
if (endTime.trim().split(' ').length === 1) {
// 如果只有日期,则将时间设置为该日期的午夜(00:00:00)
endDateTime.setHours(0, 0, 0, 0);
}
// 计算当前时间与结束时间的时间差(单位:毫秒)
var timeDifference = endDateTime - now;
// 计算剩余的天数、小时数、分钟数和秒数
var days = Math.floor(timeDifference / (24 * 3600 * 1000));
var hours = Math.floor((timeDifference % (24 * 3600 * 1000)) / (3600 * 1000));
var minutes = Math.floor((timeDifference % (3600 * 1000)) / (60 * 1000));
// 构建倒计时对象
let countdownObject = {
days: days,
hours: hours,
minutes: minutes,
};
// 根据includeSeconds参数决定是否包含秒数
if (includeSeconds) {
countdownObject.seconds = Math.floor((timeDifference % (60 * 1000)) / 1000);
}
return countdownObject;
}
console.log(countdown('2078-01-28')); // {days: 19775, hours: 8, minutes: 44, seconds: 47}
console.log(countdown('2078-01-28 12:30:00')); // {days: 19775, hours: 21, minutes: 14, seconds: 47}
console.log(countdown('2078-01-28', false)); // {days: 19775, hours: 8, minutes: 44}