0
\$\begingroup\$

I have many <spans>s which need to group to change opacity after hover. All of them need to have unique IDs. Is there a way to combine all these hover functions to one function?

jQuery

//09    
    $('#c_09_241a, #c_09_241b, #c_09_241c, #c_09_241d').hover(
        function() {
            $('#c_09_241a, #c_09_241b, #c_09_241c, #c_09_241d').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_09_241a, #c_09_241b, #c_09_241c, #c_09_241d').stop(true, true).css('opacity','0');
    }); 
    $('#c_09_242a, #c_09_242b').hover(
        function() {
            $('#c_09_242a, #c_09_242b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_09_242a, #c_09_242b').stop(true, true).css('opacity','0');
    });
    $('#c_09_245a, #c_09_245b').hover(
        function() {
            $('#c_09_245a, #c_09_245b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_09_245a, #c_09_245b').stop(true, true).css('opacity','0');
    });
    $('#c_09_246a, #c_09_246b').hover(
        function() {
            $('#c_09_246a, #c_09_246b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_09_246a, #c_09_246b').stop(true, true).css('opacity','0');
    });

    //08    
    $('#c_08_235a, #c_08_235b, #c_08_235c, #c_08_235d').hover(
        function() {
            $('#c_08_235a, #c_08_235b, #c_08_235c, #c_08_235d').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_08_235a, #c_08_235b, #c_08_235c, #c_08_235d').stop(true, true).css('opacity','0');
    }); 
    $('#c_08_236a, #c_08_236b').hover(
        function() {
            $('#c_08_236a, #c_08_236b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_08_236a, #c_08_236b').stop(true, true).css('opacity','0');
    });
    $('#c_08_239a, #c_08_239b').hover(
        function() {
            $('#c_08_239a, #c_08_239b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_08_239a, #c_08_239b').stop(true, true).css('opacity','0');
    });
    $('#c_08_240a, #c_08_240b').hover(
        function() {
            $('#c_08_240a, #c_08_240b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_08_240a, #c_08_240b').stop(true, true).css('opacity','0');
    });

    //07    
    $('#c_07_227a, #c_07_227b').hover(
        function() {
            $('#c_07_227a, #c_07_227b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_07_227a, #c_07_227b').stop(true, true).css('opacity','0');
    });
    $('#c_07_228a, #c_07_228b, #c_07_228c').hover(
        function() {
            $('#c_07_228a, #c_07_228b, #c_07_228c').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_07_228a, #c_07_228b, #c_07_228c').stop(true, true).css('opacity','0');
    });
    $('#c_07_007a, #c_07_007b').hover(
        function() {
            $('#c_07_007a, #c_07_007b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_07_007a, #c_07_007b').stop(true, true).css('opacity','0');
    });
    $('#c_07_008a, #c_07_008b').hover(
        function() {
            $('#c_07_008a, #c_07_008b').stop(true, true).css('opacity','1');
        },
        function() {
             $('#c_07_008a, #c_07_008b').stop(true, true).css('opacity','0');
    });

HTML

<div id="rzuty09p" class="rzuty">
            <span id="c_09_241a" class="mieszkanie" title=""></span>
            <span id="c_09_241b" class="mieszkanie" title=""></span>
            <span id="c_09_241c" class="mieszkanie" title=""></span>
            <span id="c_09_241d" class="mieszkanie" title=""></span>
            <span id="c_09_242a" class="mieszkanie" title=""></span>
            <span id="c_09_242b" class="mieszkanie" title=""></span>
            <span id="c_09_243" class="mieszkanie" title=""></span>
            <span id="c_09_244" class="mieszkanie" title=""></span>
            <span id="c_09_245a" class="mieszkanie" title=""></span>
            <span id="c_09_245b" class="mieszkanie" title=""></span>
            <span id="c_09_246a" class="mieszkanie nie" title=""></span>
            <span id="c_09_246b" class="mieszkanie nie" title=""></span>
        </div>  

<div id="rzuty08p" class="rzuty">
            <span id="c_08_235a" class="mieszkanie" title=""></span>
            <span id="c_08_235b" class="mieszkanie" title=""></span>
            <span id="c_08_235c" class="mieszkanie" title=""></span>
            <span id="c_08_235d" class="mieszkanie" title=""></span>
            <span id="c_08_236a" class="mieszkanie nie" title=""></span>
            <span id="c_08_236b" class="mieszkanie nie" title=""></span>
            <span id="c_08_237" class="mieszkanie" title=""></span>
            <span id="c_08_238" class="mieszkanie" title=""></span>
            <span id="c_08_239a" class="mieszkanie" title=""></span>
            <span id="c_08_239b" class="mieszkanie" title=""></span>
            <span id="c_08_240a" class="mieszkanie" title=""></span>
            <span id="c_08_240b" class="mieszkanie" title=""></span>
        </div>      

<div id="rzuty07p" class="rzuty">
            <span id="c_07_226" class="mieszkanie" title=""></span>
            <span id="c_07_227a" class="mieszkanie" title=""></span>
            <span id="c_07_227b" class="mieszkanie" title=""></span>
            <span id="c_07_228a" class="mieszkanie" title=""></span>
            <span id="c_07_228b" class="mieszkanie" title=""></span>
            <span id="c_07_228c" class="mieszkanie" title=""></span>
            <span id="c_07_229" class="mieszkanie nie" title=""></span>
            <span id="c_07_005" class="mieszkanie" title=""></span>
            <span id="c_07_006" class="mieszkanie" title=""></span>
            <span id="c_07_007a" class="mieszkanie nie" title=""></span>
            <span id="c_07_007b" class="mieszkanie nie" title=""></span>
            <span id="c_07_008a" class="mieszkanie" title=""></span>
            <span id="c_07_008b" class="mieszkanie" title=""></span>
        </div>
\$\endgroup\$

1 Answer 1

3
\$\begingroup\$
var groups = [
    '09_241', '09_242', '09_245', '09_246',
    '08_235', '08_236', '08_239', '08_240',
    '07_227', '07_228', '07_007', '07_008'
];

$.each(groups, function(i, group) {

    var $group = $('[id^=c_' + group + ']');

    $group.hover(function() {
        $group.stop(true, true).css('opacity', '1');
    }, function() {
        $group.stop(true, true).css('opacity', '0');
    });
});

Here's the fiddle: http://jsfiddle.net/W8GA3/

This is similar to @Matt's solution, with the following key differences:

  1. Sane Selectors - There's no need to add all those selectors by hand. Simply use an attribute selector to select all elements that start with a given string.
  2. Selector caching - If there's one thing you can do to your code to keep it fast, it's selector caching.
  3. $.each - We're using jQuery's each helper to loop through the array, since it also supports older browsers (forEach is not supported in IE < 9).

If you want to, you could even build that original groups array dynamically, which will make this much easier to maintain:

var groups = [];

$('[id^=c_]').each(function() {
    // Extract group number from ID
    var group = this.id.substring(2, 8);
    // If the ID is not in the groups array, add it
    ~$.inArray( group, groups ) || groups.push( group );
});

Here's the fiddle: http://jsfiddle.net/W8GA3/1/

\$\endgroup\$
2
  • \$\begingroup\$ this is super cool, new level for me, thx a lot \$\endgroup\$
    – gidzior
    Aug 16, 2012 at 22:04
  • \$\begingroup\$ @gidzior - Glad it helped you. You might have to modify some bits of the code depending on your naming conventions. $('[id^=c_]') and this.id.substring(2, 8) make a lot of assumptions, and I hope I wasn't too wrong... \$\endgroup\$ Aug 16, 2012 at 22:38

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.