javascript – find line that starts with string and print select characters

December 7, 2021

I’m trying to parse a multline string with javascript and in the example below return "Dan Smith". My filter is close but not quite there.

var header = "Resent-From:<joesmith@domain.com>\nFrom:Dan Smith <dansmith@domain.com>\nTo:Bill Smith <dansmith@domain.com>\n"
console.log(header)

var filter = header.split("From:").pop();
console.log(filter)

edit:
The goal was to retrieve "Dan Smith"

>Solution :

To do it your way, you would need another split

var header = "Resent-From:<joesmith@domain.com>\nFrom:Dan Smith <dansmith@domain.com>\nTo:Bill Smith <dansmith@domain.com>\n"


var filter = header.split("From:").pop().split("<").shift().trim();
console.log(filter)

Basic regular expression can match the name.

var header = "Resent-From:<joesmith@domain.com>\nFrom:Dan Smith <dansmith@domain.com>\nTo:Bill Smith <dansmith@domain.com>\n"
console.log(header.match(/\nFrom:([^<]+)</)[1].trim());