Split String using multiple Selectors

debugcn Published at Dev

Ambika Tewari

I have below string :

var deptInfo = "Flight-1 08:30~Flight-1 10:45|Flight-2 15:15~Flight-2 17:30"

I want to have info in the format:

var timeSlot = ["08:30-10:45","15:15-17:30"]

I am trying to split the deptInfo like this:

var timeSlot = deptInfo.split("(Flight-1 )|(~Flight-1 )").join('-').split('|').join(',').split("(Flight-2 )|(~Flight-2 )").join('-');

var timeSlot = deptInfo.split(/Flight-1 ~Flight-1 /).join('-').split('|').join(',').split(/Flight-2 ~Flight-2 /).join('-');

But this is not delivering the expected results. Can someone please help?

Wiktor Stribiżew

You may use the following pattern to extract the necessary bits and then post-process the matches to get the necessary output:

/(\d{2}:\d{2})~Flight-\d+\s*(\d{2}:\d{2})/g

See the regex demo. Note you may even wrap the pattern with \b (word boundaries) if you want to make sure the first and last 2 digits are not preceded/followed with a word char, /\b(\d{2}:\d{2})~Flight-\d+\s*(\d{2}:\d{2})\b/g.

Details

(\d{2}:\d{2}) - Group 1: 2 digits, :, 2 digits
~Flight-\d+ - a ~Flight- substring and then 1+ digits
\s* - 0+ whitespaces
(\d{2}:\d{2}) - Group 2: 2 digits, :, 2 digits

JS usage:

var rx = /(\d{2}:\d{2})~Flight-\d+\s*(\d{2}:\d{2})/g;
var s = "Flight-1 08:30~Flight-1 10:45|Flight-2 15:15~Flight-2 17:30";
var m, res = [];
while (m = rx.exec(s)) {
    res.push(m[1] + "-" + m[2]);
} 
console.log(res);

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