JSFiddle - React, Tailwind, and code Playground

JavaScript

var myString = "<a href='/search.html?id=HDJ&area=ASD&estate=JKG&ppt=3'></a>";
var myRegexp = /&estate=(.*?)(?:\s|$)/g;
var match = myRegexp.exec(myString);

var value = match[1].split('&')[0];

alert( value );