JSFiddle - React, Tailwind, and code Playground

JavaScript

var fi,se,en;
var des = "<p>FI: This is fi name, This is fi manufacturer <br /> SE:This is se name, This is se manufacturer <br /> EN: This is en name, This is en manufacturer</p>";

var match = des.match(/FI:\s*(.+)<br \/>\s*SE:\s*(.+)<br \/>\s*EN:\s*(.+)<br \/>/);
fi = match[1];
se = match[2];
en = match[3];

alert(fi+'\n'+se+'\n'+en);