JSFiddle - React, Tailwind, and code Playground
by paska
HTML
<div id="a">A</div>
<div id="b">B</div>
<div id="c">C</div>
<div id="d">D</div>
<div id="e">E</div>
JavaScript
var json = {};
json[$("#a").selector] = true;
alert(json[$("#b").selector]);
alert(json[$("#b").selector]);