Simple Number Spinner with jQuery & Font-Awesome. DEMO: http://codepen.io/farnabaz/pen/xwOPVR

spinner.html

<span class="spinner">
  <i class="fa fa-chevron-up" onclick="var el = $(this).siblings('input')[0]; el.value = Math.min(5, parseInt(el.value)+1)"></i>
  <input type="text" name="day" value="0">
  <i class="fa fa-chevron-down" onclick="var el = $(this).siblings('input')[0]; el.value = Math.max(0, parseInt(el.value)-1)"></i>
</span>
<style>
.spinner {
  position: relative;
  display: inline-block;
}
.spinner .fa-chevron-up {
  position: absolute;
  top: -15px;
  left: 9px;
  cursor: pointer;
}
.spinner .fa-chevron-down {
  position: absolute;
  left: 9px;
  bottom: -10px;
  cursor: pointer;
}
.spinner input {
  width: 30px;
  text-align: center;
  background: none;
  border: none;
  outline: none;
}
</style>