Convert values in form box

Question

I'm a bit confused on how this works. I am trying to have the seconds value convereted to a "hh:mm:ss" in the input box when the slider is active.

Here the div displays the start time and end time in seconds. And adjusts as they slide

    <div class='slider-example col-xs-12 col-sm-6 col-lg-5 center-block'>
        <div class="well">

                <input id="ex2" type="text" class="span2" value="[{{ start_length }},{{ end_length }}]" data-slider-min="{{ start_length }}" data-slider-max="{{ end_length }}" data-slider-step="1" data-slider-value="[{{ start_length }},{{ end_length }}]" data-slider-selection="after" data-slider-tooltip="hide"/>
            </div> <!-- /well -->
        </div> <!-- /slider example -->
                 <div class = "container col-xs-12 col-sm-6 col-lg-5 center-block">
                    <form class="form-inline">
                    <div class = "container col-xs-4">
                     <div class="form-group">

                        <label for="bar">Start:</label>
                        <input type="text" class="form-control"  id="bar">

                     </div>
                            </div>
<div class = "container col-xs-4 pull-right">
                     <div class="form-group">

                        <label for="bar1">End: </label>
                        <input type="text" class="form-control"  id="bar1">

                    </div>
                        </div>

                    </form>
                 </div>

Here is my javascript

<script type='text/javascript' src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script type='text/javascript' src="{{url_for('static', filename='js/bootstrap-slider.js')}}"></script>
<script type='text/javascript'>

    function secondsTimeSpanToHMS(s) {
        var h = Math.floor(s/3600);
        s -= h*3600;
        var m = Math.floor(s/60);
        s -= m*60;
        return h+":"+(m < 10 ? '0'+m : m)+":"+(s < 10 ? '0'+s : s);
    }

    $(document).ready(function(){

        /* Example 2 */
        $("#ex2").slider({});
        $("#ex2").on('slide', function (ev) {
                $('#bar').val(ev.value.slice(",")[0]);
                $('#bar1').val(ev.value.slice(",")[1]);
        document.getElementById('#bar').innerHTML = secondsTimeSpanToHMS('#bar');
        document.getElementById('#bar1').innerHTML = secondsTimeSpanToHMS('#bar1');
     });

    });

</script>

Answer 1

I doubt it's doing what you intended, but here's what it's trying to do

 $("#ex2").on('slide', function (ev) {

The slide event triggers when you slide the range handles and returns a 2 element array with the value of each handle

         $('#bar').val(ev.value.slice(",")[0]);
         $('#bar1').val(ev.value.slice(",")[1]);

This is an attempt to set the value of the element with id bar and bar1 to the range handle values - this will work if bar and bar1 are form elements (like a textbox, textarea...)

         document.getElementById('#bar').innerHTML = ...              
         document.getElementById('#bar1').innerHTML = ...

This attempts to set the innerHTML of elements with id #bar and #bar1 - however since you are using document.getElementById, you should be using bar and bar1 instead of prefixing it with # (like you'd do for jQuery).

         ... = secondsTimeSpanToHMS('#bar');
         ... = secondsTimeSpanToHMS('#bar1');

I'd assume the above is an attempt to run the function using the range handle values, but the code is wrongly passing in jQuery selectors to these function - the function expects a value in seconds.

Finally, the secondsTimeSpanToHMS takes a seconds value and converts it to hour:minute:seconds

---

The below may be a bit closer to what you are looking for

$(document).ready(function () {
    /* Example 2 */
    $("#ex2").slider({});
    $("#ex2").on('slide', function (ev) {
        $('#bar').val(secondsTimeSpanToHMS(ev.value.slice(",")[0]));
        $('#bar1').val(secondsTimeSpanToHMS(ev.value.slice(",")[1]));
    });
});

Or alternatively, you could set another 2 element's innerHTML to the output of secondsTimeSpanToHMS and retain the .val() lines from the original function.