JSFiddle - React, Tailwind, and code Playground

HTML

<body>
 
<button id="getp">Get Paragraph Width</button>
<button id="getd">Get Document Width</button>
<button id="getw">Get Window Width</button>
<div>&nbsp;</div>
<p>
  Sample paragraph to test width
</p>

JavaScript

function showWidth( ele, w ) {
  $( "div" ).text( "The width for the " + ele + " is " + w + "px." );
}
$( "#getp" ).click(function() {
  showWidth( "paragraph", $( "p" ).width() );
});
$( "#getd" ).click(function() {
  showWidth( "document", $( document ).width() );
});
$("#getw").click(function() {
  showWidth( "window", $( window ).width() );
});