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Using images as radio labels

Posted on 2011-02-24
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Last Modified: 2012-05-11
I want to substitute the standard radio form buttons for selectable images. Here is my markup for this...

<label><input type="radio" name="finish" value="walnut">
                            <img class="imagebox" onClick="this.className='imagebox-active';" src="awards/walnut.jpg" width="190" height="220"/></label>
                            
                            <label><input type="radio" name="finish" value="cherry">
                            <img class="imagebox" onClick="this.className='imagebox-active';" src="awards/cherry.jpg" width="190" height="220"/></label>
                            
                            <label><input type="radio" name="finish" value="piano">
                            <img class="imagebox" onClick="this.className='imagebox-active';" src="awards/piano.jpg" width="190" height="220"/></label>


Two issues:
1. How do I hide the actual radio buttons?
2. The onclick events activate the class that highlights the border to indicate selection... how do I revert back if another image is selected? Currently I can 'select' all 3 radio images.

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Question by:pixelscape
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7 Comments
 
LVL 40

Expert Comment

by:gurvinder372
ID: 34972817
for all radio buttons add this style

<input type="radio" name="finish" value="walnut" style="display:none">

or you can simply remove the radio buttons itself

when you click an image, try something like

<img class="imagebox" onClick="this.className='imagebox-active';" src="awards/piano.jpg" width="190" height="220"/>

function changeClassName(thisObj)
{
   var allImages = document.getElementsByTagName("img");
   for (var counter = 0; counter < allImages.length; counter++)
   {
        allImages [ counter ].setAttribute("class", "imagebox"); //reset all images
   }
    thisObj.setAttribute("class", "imagebox-active");
}
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LVL 40

Expert Comment

by:gurvinder372
ID: 34972822
sorry the image markup will become
<img class="imagebox" onClick="changeClassName(this)" src="awards/piano.jpg" width="190" height="220"/>

0
 

Author Comment

by:pixelscape
ID: 34973122
Great, thanks!

var allImages = document.getElementsByTagName("img");

...applies class=imagebox-active to all images on page... I need to specify only apply to class=imagebox

Thanks
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LVL 40

Expert Comment

by:gurvinder372
ID: 34973163
0
 

Author Comment

by:pixelscape
ID: 34973843
I am a little confused as to how this should work...

so I replace this line:
var allImages = document.getElementsByTagName("img");

with this line:
var allImages = document.getElementsByClassName('imagebox imagebox-active', 'img'); ?
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LVL 40

Assisted Solution

by:gurvinder372
gurvinder372 earned 100 total points
ID: 34976710
if you are using the last link (second code) in my last reply, then make it

var allImages = getElementsByClassName(document, "img", 'imagebox imagebox-active' );

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LVL 20

Accepted Solution

by:
Proculopsis earned 400 total points
ID: 34978201

Try something like this:

<html>
<head>
<title>http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q__26845659.html</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js" type="text/javascript"></script>
<script> 

jQuery(document).ready(function(){

  $(".imagebox").click( function() {

    $(this).siblings().get(0).checked = true;
    $(".imagebox-active").removeClass( "imagebox-active" );
    $("input[name=finish]:checked").siblings().addClass( "imagebox-active" );

  });

});

</script>

<style>
label { display: block; cursor: pointer; }
.label-radio input { position: absolute; left: -9999px; }
.imagebox-active { border: 3px dashed #f00; }
</style>

</head>
<body>

<label class="label-radio">
  <input type="radio" name="finish" value="walnut">
  <img class="imagebox" src="awards/walnut.jpg" width="190" height="220"/>
</label>
                            
<label class="label-radio">
  <input type="radio" name="finish" value="cherry">
  <img class="imagebox" src="awards/cherry.jpg" width="190" height="220"/>
</label>
                            
<label class="label-radio">
  <input type="radio" name="finish" value="piano">
  <img class="imagebox" src="awards/piano.jpg" width="190" height="220"/>
</label>

</body>
</html>

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