JSFiddle - React, Tailwind, and code Playground
HTML
<button id="button">Click</button>
<iframe id="graphFrame" src="http://halalit.net"></iframe>
JavaScript
$(function(){
$('#button').click(function(){
var ifr = $('#graphFrame');
ifr.toggle(function(){
if(ifr.is(':visible')) ifr.attr('src', 'http://heera.it');
else ifr.attr('src', '')
})
});
});