Answers for "bootstrap range slider bar"

bootstrap range input

<form>
  <div class="form-group">
    <label for="formControlRange">Example Range input</label>
    <input type="range" class="form-control-range" id="formControlRange">
  </div>
</form>

bootstrap range slider with 2 handles

No, the HTML5 range input only accepts one input. I would recommend you to use 
something like the jQuery UI range slider for that task.

bootstrap range slider

<label for="customRange3" class="form-label">Example range</label>
<input type="range" class="form-range" min="0" max="5" step="0.5" id="customRange3">