input type=range滑动事件

<input type="range"/>需求：滑动时，计数$.fn.RangeSlider = function(cfg) {  this.sliderCfg = {    min: cfg && !isNaN(parseFloat(cfg.min)) ? Number(cfg.min) : null,    max: cfg && !isNaN(parseFloat(cfg.max)) ? Number(cfg.max) : null,    step: cfg && Number(cfg.step) ? cfg.step : 1,    callback: cfg && cfg.callback ? cfg.callback : null  }

  var $input = $(this)  var min = this.sliderCfg.min  var max = this.sliderCfg.max  var step = this.sliderCfg.step  var callback = this.sliderCfg.callback  $input.attr(‘min‘, min)    .attr(‘max‘, max)    .attr(‘step‘, step)

$input.bind(‘input‘, function(e) {    $input.attr(‘value‘, this.value)    $input.css(‘background-size‘, this.value + ‘% 100%‘)    if ($.isFunction(callback)) {      callback(this)    }  })}var change = function($input) {  var Value = $(‘input‘).attr(‘value‘) * 5  var Price = Value + 200  var Price1 = Value + 150  var Price2 = Value + 100  $(‘.proportion‘).text(Value + ‘%‘)  $(‘.profit‘).text(‘￥‘ + Value)  $(‘.price‘).text(‘￥‘ + Price)  $(‘.price1‘).text(‘￥‘ + Price1)  $(‘.price2‘).text(‘￥‘ + Price2)}$(‘input‘).RangeSlider({ min: 0, max: 100, step: 1, callback: change })