JSFiddle - React, Tailwind, and code Playground
by silkherb
HTML
<div id="content" style="display:none">**Content1 goes here**</div>
<div id="content" style="display:none">Content2 goes here</div>
<div id="content" style="display:none">Content3 goes here</div>
<div id="content" style="display:none">Content4 goes here</div>
<div id="content" style="display:none">**Content1 goes here too**</div>
<div id="content" style="display:none">**Content1 goes here again**</div>
<div id="content" style="display:none">Content4 goes here part 2</div>
JavaScript
var matches = $( "div:contains('Content1')" ).length;
alert(matches);