Question

I’m using this bit of javascript to add a class to multiple elements. I trying to reference multiple divs and addClass to them. it Only works on the first one.

Javascript

<script>            
            $(function(){           
            if ( $(window).width() < 230 ) {
              $('#item1').addClass('col1'); //max-width 80px

            }
            else 
                if ( $(window).width() >= 230 && $(window).width() < 330 ) {
              $('#item1').addClass('col2'); //max-width 180px

            }
            else 
           {
              $('#item1').addClass('col3'); //max-width 280px

            }

          });
        </script>

it’s working if I only have one #item1 on the page but it doesn’t seem to want to add the class to multiple items that exist in the same div id. I even tried adding the class to multiple items that exist in the same div class rather than id. Either one would be a good solution for mw if you can figure it out.

My HTML code is

    <div id="item1" class="blue">
<label for="amount">Price range:</label>
<input type="text" id="amount" style="border:0; color:#f6931f; font-weight:bold;" />
<div class="slider-range"></div>
</div>

<div id="item1" class="blue">
<label for="amount2">Price range:</label>
<input type="text" id="amount2" style="border:0; color:#f6931f; font-weight:bold;"/>
<div class="slider-range2"></div>
</div>

Been trying to figure this out for a few hours now so I thought I’d ask to see if anyone can point me in the right direction. Thanks in advance.

Answer 1

IDs should be unique. Try adding a class instead, like “item”:

<div class="blue item">
    ...etc...
</div>

Then in your JS:

$('.item').addClass('col1');