javascript - Bootstrap 3 > trying to create columns with equal heights

Question

I've only just started learning so please stick with me and I'll try provide as much info as I can.

Using Bootstrap 3 I have been attempting to adjust a number of content areas so that they have the same height. I have 4 per row with an unspecified amount of columns (I'm looping through a php array to determine this). Essentially no matter how many content areas I need to display they should all use the same height, or at the very least the same height as the other three on it's row.

I have been using this jquery library > https://github.com/mattbanks/jQuery.equalHeights > which works great but whenever I resize the page the heights of the content areas don't update (if I drag the screen to a new size and hit refresh the heights re-adjust to the correct position)

I have also looked at a few other solutions such as > Twitter Bootstrap - Same heights on fluid columns but this doesn't seem to work when I adjust it for multiple rows.

Any help would be appreciated, whether I should be using a javascript solution or if there's anything I can be doing with CSS. Keeping it mind I need the heights to be consistent and for it to re-adjust on screen resize. I would prefer to use Bootstrap 3, but if a solution is available for 2 I will use that version.

<div class = "container">
<div class="row">
    <div id="equalheight">      

        <div class="col-12 col-lg-3 col-md-3 col-sm-3 col-xs-12 demo">
            <div class="info-block"><!-- BODY BOX-->
                <p>one line of copy</p>
            </div>
        </div>  

        <div class="col-12 col-lg-3 col-md-3 col-sm-3 col-xs-12 demo">
            <div class="info-block"><!-- BODY BOX-->
                <p>lots and lots of copy lots and lots of copy lots and lots of copy lots and lots of copy</p>
            </div>
        </div>  

        <div class="col-12 col-lg-3 col-md-3 col-sm-3 col-xs-12 demo">
            <div class="info-block"><!-- BODY BOX-->
                <p>one line of copy</p>
            </div>
        </div>  

        <div class="col-12 col-lg-3 col-md-3 col-sm-3 col-xs-12 demo">
            <div class="info-block"><!-- BODY BOX-->
                <p>one line of copy</p>
            </div>
        </div>              

    </div>
</div>

Above is my html, the second content area has the large amount of copy

<script>
    $('#equalheight div').equalHeights();
</script>

<script>
    $(window).resize(function(){
       $('#equalheight div').equalHeights(); 
    });
    $(window).resize();
</script>   

Above is my Javascript, calling the before mentioned library.

Thanks for any help / advice

Answer 1

You can try using CSS negative margins (no jQuery needed)..

.demo{
    margin-bottom: -99999px;
    padding-bottom: 99999px;
    background-color:#efefef;
}

#equalheight {
    overflow: hidden; 
}

http://bootply.com/92230

EDIT - another option

Here is another example using CSS3 flexbox spec: http://www.bootply.com/126437