[ "Fri Feb 23 2022 12:00:00 GMT+0800 (Philippine Standard Time), Fri Feb 24 2022 12:00:00 GMT+0800 (Philippine Standard Time)", "Fri Feb 25 2022 12:00:00 GMT+0800 (Philippine Standard Time), Fri Feb 26 2022 12:00:00 GMT+0800 (Philippine Standard Time)" ] const arr = [ "Fri Feb 23 2022 12:00:00 GMT+0800 (Philippine Standard Time), Fri Feb 24 2022 12:00:00 GMT+0800 (Philippine Standard Time)", "Fri Feb 25 2022 12:00:00 GMT+0800 (Philippine Standard Time), Fri Feb 26 2022 12:00:00 GMT+0800 (Philippine Standard Time)" ]; const result = arr.flatMap(item => item.split(',')); console.log(result);Puede aplanar todo y agregar a una nueva matriz.
Ejemplo a continuación:
var data = [ "Fri Feb 23 2022 12:00:00 GMT+0800 (Philippine Standard Time), Fri Feb 24 2022 12:00:00 GMT+0800 (Philippine Standard Time)", "Fri Feb 25 2022 12:00:00 GMT+0800 (Philippine Standard Time), Fri Feb 26 2022 12:00:00 GMT+0800 (Philippine Standard Time)" ]; var dataSplited = data.flatMap((value) => value.split(", ")); console.log(dataSplited);