JSFiddle - React, Tailwind, and code Playground
JavaScript
var str= "<!DOCTYPE html><html lang=\"en\"><head> <title>Home</title> <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"> <link href=\"/static/css/bootstrap.min.css\" rel=\"stylesheet\" media=\"screen\"></head><body><div id=\"app-container\" class=\"container-fluid\"> <div class=\"page-header\"> <h1> <a href=\"/\">Home</a> <small>Text</small> </h1> </div> <div id=\"hero-units\" class=\"carousel-inner slide\"> <div class=\"hero-unit home item active\"> <h1> Text text text </h1> <p> More text! </p> <div id=\"app-nav\"> <a id=\"lets-go\" class=\"btn btn-primary btn-large nav-forward\" href=\"/what-up/\"> Let's go </a> </div> </div> </div></div></body></html>";
var tempDom = $('<output>').append($.parseHTML(str));
var appContainer = $('#app-container', tempDom);
console.log(tempDom, appContainer[0])