JSFiddle - React, Tailwind, and code Playground

JavaScript

var str = '<div>content</div><a href="http://www.example.com">jump link</a>\n<div>content</div><a href="http://www.example.com">jump link</a>\n<div>content</div><a href="http://www.example.com">jump link</a><div>content</div>';

var res = str.replace(/([\s\S]*)<a[^>]*>[^<]*<\/a>/, "$1last");
console.log(res);