javascript - Trying to use range slider to populate a graph? -


i have range slider animates graph. problem have is:

the slider start @ height 0 under min-height , ends @ height 100% above min-height.

what want slider start @ min-height , end @ max-height. i'm stuck on how this.

below js code i'm struggling , jsfiddle

onslide: function(position, value){             var $rangeslider = $('.rangeslider');              var fullwidth = ($rangeslider.width() - 42) ;              var heightofsaving = ((position / fullwidth) * 100);             $savinggraph.css('height',  heightofsaving + '%');             $($rateonlinebedrijfsmakelaar).css('top', $savinggraph.height() + 'px');              $output.html(value);         }

https://jsfiddle.net/vexstrx6/

just change caculation!
simple math question more coding question...

(function( $ ) {   'use strict';    var $output = $('#getright-besparing-output');   var $range = $('input[type="range"]');   var $savinggraph = $('.graph-bar.saving');   var $rateonlinebedrijfsmakelaar = $('#rateonlinebedrijfsmakelaar');      $(function(){     $range.rangeslider({       polyfill: false,        oninit: function(){         $output.html($range.val());       },       onslide: function(position, value){         var $rangeslider = $('.rangeslider');          var fullwidth = ($rangeslider.width() - 42) ;          var minh = parseint($savinggraph.css("min-height"));         var maxh = parseint($savinggraph.css("max-height"));          var heightofsaving = minh +((position / fullwidth) * (maxh - minh));  //((position / fullwidth) * 100);          console.log(heightofsaving);         $savinggraph.css('height',  heightofsaving + 'px'); // 'px' intead of '%'         $($rateonlinebedrijfsmakelaar).css('top', $savinggraph.height() + 'px');          $output.html(value);       }     });     });    })( jquery );

codepen


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