JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/three.js/r66/three.min.js"></script>
<script src="http://stemkoski.github.io/Three.js/js/Detector.js"></script>
<script src="http://stemkoski.github.io/Three.js/js/OrbitControls.js"></script>
<script src="http://stemkoski.github.io/Three.js/js/THREEx.KeyboardState.js"></script>
<script src="http://stemkoski.github.io/Three.js/js/THREEx.WindowResize.js"></script>
<script src="http://stemkoski.github.io/Three.js/js/THREEx.FullScreen.js"></script>
<link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/themes/smoothness/jquery-ui.css" />
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
<div id="ThreeJS" style="z-index: 1; position: absolute; left:0px; top:0px"></div>
<div id="floating">
    <p>
       Y RANGE =  
        <span id="therange" style="border:0; color:#fff; font-weight:bold;">0 - 300</span>
    </p>
        <div id="slider"></div>
</div>

CSS

#floating {position: absolute; top: 10px; left:30px; z-index: 2; width: 400px; }

JavaScript

var container, scene, camera, renderer, controls;
var keyboard = new THREEx.KeyboardState();
var clock = new THREE.Clock();
var linegeometry, pathPoints = [];

// custom global variables
var linemesh;
var line;

init();
animate();

$( "#slider" ).slider({
    range: true,
    min: 0,
    max: 300,
    values: [ 0, 300 ],
    slide: function( event, ui ) {
        var min = ui.values[ 0 ];
        var max = ui.values[ 1 ];
        $( "#therange" ).text( ui.values[ 0 ] + " - " + ui.values[ 1 ] );
        
        for ( var i = 0, l = linegeometry.vertices.length; i < l; i ++ ) {  
            if(linegeometry.vertices[ i ].x < min ||
               linegeometry.vertices[ i ].x > max) {
                linegeometry.vertices[ i ].y = 0
            }
            else {
                linegeometry.vertices[ i ].y = pathPoints[i][1];
            }
        }
        line.geometry.verticesNeedUpdate = true;
        if (ui.values[0] < 30){
             mesh.visible = false;
        } else {
         mesh.visible = true;   
        }
    }
});

// FUNCTIONS 		
function init() 
{
	// SCENE
	scene = new THREE.Scene();
	// CAMERA
	var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
	var VIEW_ANGLE = 20, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
	camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR);
	scene.add(camera);
	camera.position.set(-200,100,50);
	camera.lookAt(scene.position);	
	// RENDERER
	if ( Detector.webgl )
		renderer = new THREE.WebGLRenderer( {antialias:true} );
	else
		renderer = new THREE.CanvasRenderer(); 
	renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
	container = document.getElementById( 'ThreeJS' );
	container.appendChild( renderer.domElement );
	// EVENTS
	THREEx.WindowResize(renderer, camera);
	THREEx.FullScreen.bindKey({ charCode : 'm'.charCodeAt(0) });
	// CONTROLS
	controls = new THREE.OrbitControls( camera, renderer.domElement );
    controls.center.x = 75;
    controls.center.y = 10;
   ...