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A Pen By Captain Anonymous

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              <p>Tips : You could use the mouse wheel to increase/decrease the value when the input textbox has the 'focus'</p>

<div style="width:150px">
<div class="stepper" id="stepper_1">
  <div class="stepper-progress"></div>
  <input type="text" class="stepper-number" min="10" max="90" value="50">
</div>

<br>
  
<div class="stepper" id="stepper_2">
  <div class="stepper-progress"></div>
  <input type="text" class="stepper-number" min="0" max="500">
</div> 
  
<br>
  
<div class="stepper" id="stepper_3">
  <div class="stepper-progress"></div>
  <input type="text" class="stepper-number">
</div> 

<br>
  
<div class="stepper" id="stepper_4">
  <div class="stepper-progress"></div>
  <input type="text" class="stepper-number" unit="px" step="5">
</div> 

<br>
  
<div class="stepper" id="stepper_5">
  <div class="stepper-progress"></div>
  <input type="text" class="stepper-number" unit="" min="1" max="10" decimals="2" value="2.55" step="0.1">
</div> 
  
</div>
            
          
!
            
              * {
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

div {
  display: block;
}

.stepper {
  position: relative;
  width: 100%;
  height: 30px;
  background: #4e4e4e;
  border: 1px solid #292929;
  cursor: col-resize;
}

.stepper .stepper-number:focus {
  outline: 1px solid #1baee1;
  //cursor: text
}

.stepper-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.2);
  -webkit-transform-origin: 0 0;
  -ms-transform-origin: 0 0;
  transform-origin: 0 0;
  -webkit-transition: background-color 0.1s linear;
  transition: background-color 0.1s linear;
}

.stepper-number {
  position: relative;
  width: 100%;
  height: 28px;
  line-height: 28px;
  padding: 0 6px;
  color: #fff;
  background: transparent;
  border: 0;
  outline: 0;
  outline-offset: 0;
  cursor: col-resize;
  z-index: 2;
}

.stepper.is-changing .stepper-progress {
  background-color: #1baee1;
}

.stepper.is-scrubbing {
  background: rgba(255, 255, 255, 0.8)
}
            
          
!
            
              // jquery.stepper.js
// https://github.com/ncou/jquery.stepper.basic
// ------------------------------------------------------
// Author: NCOU
//
// the semi-colon before function invocation is a safety net against concatenated
// scripts and/or other plugins which may not be closed properly.
(function($, window, document, undefined) {
  "use strict";
  var pluginName = "stepper",
    defaults = {
      selectorProgressBar: ".stepper-progress",
      selectorInputNumber: ".stepper-number",
      classNameChanging: "is-changing",
      value: "",
      decimals: 0,
      min: 0,
      max: 100,
      step: 1,
      unit: "%"
    };

  // The actual plugin constructor
  function Plugin(element, options) {
    this.element = element;

    this.settings = $.extend({}, defaults, options);

    this._defaults = defaults;
    this._name = pluginName;

    this.init();
  }

  // Avoid Plugin.prototype conflicts
  $.extend(Plugin.prototype, {
    init: function() {
      // local variable
      this._curDown = false;
      this._mouseDownX = 0;
      this._mouseDownValue = 0;

      // Cache elements
      this.$el = $(this.element);
      this.$input = this.$el.find(this.settings.selectorInputNumber);
      this.$progress = this.$el.find(this.settings.selectorProgressBar);

      // init values
      this.decimals = this.$input.attr("decimals") || this.settings.decimals;
      this.min = this.$input.attr("min") || this.settings.min;
      this.max = this.$input.attr("max") || this.settings.max;
      this.step = this.$input.attr("step") || this.settings.step;
      this.unit = this.$input[0].hasAttribute("unit") ? this.$input.attr("unit") : this.settings.unit;

      this.value =
        this.$input.val() ||
        (this.settings.value !== ''
          ? this.settings.value
          : this.max);

      this.setValue(this.value);

      // Bind events
      this.$input.on("keydown", this.onKeyPress.bind(this));
      this.$input.on("blur", this.onBlur.bind(this));
      this.$input.on("paste input", this.onChange.bind(this));
      this.$el.on("mousedown touchstart", this.onMouseDown.bind(this));
      this.$el.on("wheel", this.onMouseWheel.bind(this));
      $(document).on("mouseup touchend", this.onMouseUp.bind(this));
      $(document).on("mousemove touchmove", this.onMouseMove.bind(this));
    },

    onMouseDown: function(e) {
      this._mouseDownX = e.clientX || e.originalEvent.touches[0].clientX;
      this._mouseDownValue = this.getValue();

      this._changeStart();
    },

    onMouseUp: function(e) {
      this._changeEnd();
    },

    onMouseMove: function(e) {
      if (this._curDown === true) {
        var t =
          (e.clientX || e.originalEvent.touches[0].clientX) - this._mouseDownX;
        this.setValue(this._mouseDownValue + t * this.step);
      }
    },

    onMouseWheel: function(e) {
      // prevent [wheel increase and mousemove increase] and [wheel increase] if the input field is not focused
      if (this._curDown === false && this.$input.is(":focus")) {
        e.preventDefault();
        // delta is 1 if scroll up, or -1 if scroll down
        var d = e.originalEvent.deltaY < 0 ? 1 : -1;
        this.setValue(this.getValue() + d * this.step);
      }
    },

    onChange: function(e) {
      this._updateProgress(this.getValue());
    },

    onBlur: function(e) {
      this._changeEnd();
      this.setValue(this.getValue());
    },

    onKeyPress: function(e) {
      // exit the input field if key pressed is 'Enter'
      if (e.keyCode === 13) {
        this.$input.blur();
      }
    },

    getValue: function() {
      return parseFloat(this.$input.val()) || 0;
    },

    setValue: function(amount) {
      var value;

      value = Math.max(Math.min(amount, this.max), this.min);
      value = this._roundValue(value);

      var n = value;
      n = n.toFixed(this.decimals);

      n += this.unit;
      this.$input.val(n);

      this._updateProgress(value);
    },

    _updateProgress: function(v) {
      var r = this._valueToPercent(v) / 100;
      this.$progress.css("transform", "scaleX(" + r + ")");

      this.$input.trigger("change");
    },

    _percentToValue: function(v) {
      return this.min + v / 100 * (this.max - this.min);
    },

    _valueToPercent: function(v) {
      var t = (v - this.min) / (this.max - this.min) * 100;
      return Math.max(Math.min(t, 100), 0);
    },

    _roundValue: function(v) {
      var maxDecimals = 2;

      var t = Math.pow(10, maxDecimals);
      return Math.round(v * t) / t;
    },

    _changeStart: function() {
      this._curDown = true;
      this.$el.addClass(this.settings.classNameChanging);
    },

    _changeEnd: function() {
      this._curDown = false;
      this.$el.removeClass(this.settings.classNameChanging);
    }
  });

  // A lightweight plugin wrapper around the constructor, preventing against multiple instantiations
  $.fn[pluginName] = function(options) {
    return this.each(function() {
      if (!$.data(this, "plugin-" + pluginName)) {
        $.data(this, "plugin-" + pluginName, new Plugin(this, options));
      }
    });
  };
})(jQuery, window, document);

$('#stepper_1').stepper();
$('#stepper_2').stepper();
$('#stepper_3').stepper({
  unit: 's',
  value: 20,
  min: 0,
  max: 300,
  step: 10
});
$('#stepper_4').stepper();
$('#stepper_5').stepper();
            
          
!
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