title: Display float value in input field of dat.gui in three js
body: <p><a href="https://i.stack.imgur.com/NFhGN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NFhGN.png" alt="enter image description here"></a></p>
  
  <p>I added inseam inch value 31.8 as default value but it show 32. This is my code.</p>
  
  <blockquote>
    <p>var params = {
                      Inseam: 0,
                      inseamarea:31.8,
                  };
                  var gui = new GUI();
                  var folder = gui.addFolder( 'Morph Targets' );</p>
  
  <pre><code>          folder.add( params, 'Inseam', -1, 1 ).step( 0.1 ).onChange( function ( value ) {                    
                params.inseamarea = 31.8 +(1.4 * value);                    
            } );
            folder.add(params, "inseamarea", 31.8).name("Inseam Inch ").listen();
  </code></pre>
  </blockquote>
  
  <p>I want value in float but it show in integer. 
  I found a link which i followed. <a href="https://jsfiddle.net/prisoner849/514d4kmy/" rel="nofollow noreferrer">https://jsfiddle.net/prisoner849/514d4kmy/</a>
  and this is my fiddel link where i added my code in same place. <a href="https://jsfiddle.net/kwdphca0/" rel="nofollow noreferrer">https://jsfiddle.net/kwdphca0/</a></p>