JSFiddle - React, Tailwind, and code Playground

HTML

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head xmlns:xi="http://www.w3.org/2001/XInclude"><meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <!-- meta -->
    <meta name="author" content="pubmeddev" /><meta name="keywords" content="PubMed, National Center for Biotechnology Information, NCBI, United States National Library of Medicine, NLM, MEDLINE, Medical Journals, pub med, Entrez, Journal Articles, Citation search" /><meta name="description" content="PubMed comprises more than 22 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites." /><meta name="robots" content="index,nofollow,noarchive" />
<meta name="ncbi_app" content="entrez" /><meta name="ncbi_db" content="pubmed" /><meta name="ncbi_term" content="diabetes" /><meta name="ncbi_report" content="docsum" /><meta name="ncbi_format" content="html" /><meta name="ncbi_pagesize" content="20" /><meta name="ncbi_sortorder" content="default" /><meta name="ncbi_pageno" content="1" /><meta name="ncbi_resultcount" content="417806" /><meta name="ncbi_op" content="search" /><meta name="ncbi_pdid" content="docsum" /><meta name="ncbi_sessionid" content="CE8D636A08D7B0A1_0143SID" /><meta name="ncbi_filter" content="all" /><meta name="ncbi_stat" content="false" /><meta name="ncbi_hitstat" content="false" />

    
    <!-- title -->
    <title>diabetes - PubMed - NCBI</title>
    
    <!-- Common JS and CSS -->
    
        <script type="text/javascript">
            var ncbi_startTime = new Date();
        </script>
        
                <link rel="alternate" type="application/rss+xml" title="PubMed New and Noteworthy" href="/feed/rss.cgi?ChanKey=PubMedNews" />
                <link rel="search"...

JavaScript

var pl = document.getElementsByTagName('body')[0].getElementsByName('EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum.uid');

window.alert(pl[0].value);