/**
Takes a relative date and an optional date parameter, and returns a human-readable string representing the difference between the two dates.
@function
@param {number|Date} relativeDate - The relative date (can be a number
representing an UTC timestamp, or a Date object).
@param {Date} [date=new Date()] - An optional date parameter to compare the
relative date to. Defaults to the current date and time.
@returns {string} A human-readable string representing the difference between
the two dates (e.g., "in 3 months", "5 hours ago", etc.). Returns "-" if the input date is invalid or not yet loaded.
@example
const timestamp = Date.now() / 1000 + 60 * 60 * 24 * 3; // UTC timestamp 3 days from now
console.log(getRelativeTime(timestamp)); // Output: "in 3 days"
*/
export const getRelativeTime = (relativeDate, date = new Date()) => {
// if relativeDate is a number, we assume it is an UTC timestamp
if (typeof relativeDate === 'number') {
// count charachters to check if in seconds or milliseconds
if (relativeDate.toString().length < 13) {
relativeDate = relativeDate * 1000;
}
// convert to date object
relativeDate = new Date(relativeDate);
}
if (!(relativeDate instanceof Date)) {
// invalid date, probably still loading
return '-';
}
let units = {
year : 24 * 60 * 60 * 1000 * 365,
month : 24 * 60 * 60 * 1000 * 365/12,
day : 24 * 60 * 60 * 1000,
hour : 60 * 60 * 1000,
minute: 60 * 1000,
second: 1000
}
let rtf = new Intl.RelativeTimeFormat('en', { numeric: 'auto' })
let elapsed = relativeDate - date
// "Math.abs" accounts for both "past" & "future" scenarios
for (let u in units) {
if (Math.abs(elapsed) > units[u] || u === 'second') {
return rtf.format(Math.round(elapsed/units[u]), u)
}
}
}
في جولة حصرية داخل “الغرفة الزرقاء” بقناة BBC العربية، نكشف كواليس واحدة من أكثر غرف الأخبار تطورًا في العالم.
كيف الذكاء اصطناعي يتحكم بالبث دون تدخل بشري، لتقدم تجربة بصرية مذهلة.
الفيديو يستعرض كيف تمزج BBC بين التقنية والاحتراف لتصنع نشرات إخبارية من قلب المستقبل.