code: def bootstrap_javascript(jquery=None):
      
  
      javascript = ""
      # See if we have to include jQuery
      if jquery is None:
          jquery = get_bootstrap_setting("include_jquery", False)
      # NOTE: No async on scripts, not mature enough. See issue #52 and #56
      if jquery:
          url = bootstrap_jquery_url()
          if url:
              javascript += render_script_tag(url)
      url = bootstrap_javascript_url()
      if url:
          javascript += render_script_tag(url)
      return mark_safe(javascript)
docs: Return HTML for Bootstrap JavaScript.
  
      Adjust url in settings. If no url is returned, we don't want this
      statement to return any HTML.
      This is intended behavior.
  
      Default value: ``None``
  
      This value is configurable, see Settings section
  
      **Tag name**::
  
          bootstrap_javascript
  
      **Parameters**:
  
          :jquery: Truthy to include jQuery as well as Bootstrap
  
      **Usage**::
  
          {% bootstrap_javascript %}
  
      **Example**::
  
          {% bootstrap_javascript jquery=1 %}