JavaScript-按时间字符串排序

Question

I am not very good with manipulating strings and need some help.

I have this function which takes 2 divs and gets a paragraph that contains a string representing time in a format that looks like this:

Friday, 7 August 2015, 18:21 PM

or

Tuesday, 21 August 2015, 10:45 AM

as 2 examples. I want to create a sort comparator function which will return the correct number if one is larger than the other but I am not sure how to extract days when the number can be 1 or 2 digits long and also take into account the exact time etc..

The time string is the innerText part which I have split where there is a comma so that atime and btime are arrays for each section.

Here is what I have done so far:

// format: Friday, 7 August 2015, 18:21 PM
// atime[0] --> Friday
// atime[1] -->  7 August 2015
// atime[2] -->  18:21 PM

function sortByTimeAdded(a, b) {
    var atime = (a.getElementsByClassName('timeAdded')[0].innerText).split(',');
    var btime = (b.getElementsByClassName('timeAdded')[0].innerText).split(',');

    /*if (atime[1] < btime[1]) {
        return -1;
    }
    if (atime[1] > btime[1]) {
        return 1;
    }*/
    return 0;
}

Thank you!

Answer 1

I suggest using Date.parse , I will show on example:

var a = "Friday, 7 August 2015, 18:21 PM"
Date.parse(a.substring(0, a.length-3))

with this you get timestamp you can use for comparison.

If you need date object just replace Date.parse with Date()