如何将此日期格式转换为 JS 日期？

Question

I'm working with a service that provides a weird date format that I just can not figure out an concise way of converting to a JS Date Object. I need to perform some logic with the dates which is why I need to convert it.

The date format returned by the service is like so: 02/Dec/2020:23:58:15 +0000 .

Any help highly appreciated, thanks in advance

Answer 1

The date parses if you replace the first : with space

 const str = "02/Dec/2020:23:58:15 +0000" console.log(new Date(str.replace(/:/," "))); // change only the first colon

For a safer version it seems we need to do this - tested in Safari, Chrome and Firefox

 const monthNames = ["jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"]; const re = /(\d{2})\/(\w{3})\/(\d{4}):(\d{2}):(\d{2}):(\d{2}) (.*)/; const makeDate = str => { const [_, dd, mmm, yyyy, hh, min, ss, tz] = str.match(re) const tzStr = [tz.slice(0, 3), ':', tz.slice(3)].join(''); // make ±hh:mm const mm = monthNames.indexOf(mmm.toLowerCase()); // English only const isoString = `${yyyy}-${mm}-${dd}T${hh}:${min}:${ss}${tzStr}` console.log(isoString) return new Date(isoString) }; const str = "02/Dec/2020:23:58:15 +0000" const d = makeDate(str); console.log(d)