jquery - Resetting data-Id for dynamically appended inputs -

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so red squares http://imgur.com/lqyatdb showing i'm trying achieve want reset number after each champion start [1] might want add more fields first champion increase old number 

$(document).ready(function(){     championnumber = 1;     spellnumber=1;     $('a#addchampion').on('click',function(){          $('div#championinput').append(         '<div class="champion" data-id="'+championnumber+'">\              <a href="#" class="remove">remove</a>\              <br>\              <input type="text" class="championinput" list="champions" name="champion[]" placeholder="champion '+championnumber+'">\              <datalist id="champions"></datalist>\              <a href="#" class="addspell">add spell</a>\              <br>\          <div>');         for(var key in champions){             if(champions.hasownproperty(key)){                 $('#champions').append('<option value="' + key + '">');             }         }         championnumber++;     });     $('div#championinput').on('click', 'a.remove',function(){         $(this).parent('div.champion').remove();      });     $('div#championinput').on('click', 'a.addspell',function(){          $(         '<div class="spell" data-id="'+spellnumber+'">\             <select name="change['+$(this).parent('div').data('id')+'][]">\                <option value="passive">passive</option>\                <option value="q" selected>q</option>\                <option value="w">w</option>\                <option value="e">e</option>\                <option value="r">r</option>\             </select>\             <input type="text" name="championspell['+$(this).parent('div').data('id')+'][]">\             <br>\             <textarea type="text" size="20" name="spelldescription['+$(this).parent('div').data('id')+'][]" placeholder="enter description" />\             <select name="spellchange['+$(this).parent('.champion').data('id')+']['+spellnumber+'][]">\                <option value="buff">buff</option>\                <option value="nerf">nerf</option>\                <option value="new">new</option>\                <option value="change">change</option>\                <option value="bugfix">bugfix</option>\             </select>\             <a href="#" class="addchange">add change </a>\             <a href="#" class="removespell">remove spell</a>\         </div>\         ').appendto('.champion[data-id='+$(this).parent('div').data('id')+']');         spellnumber++;     });     $('div#championinput').on('click', 'a.addchange',function(){         $(this).next('a.removespell').after(            '<div class="change">\                 <textarea type="text" size="20" name="spelldescription['+$(this).parent('div').data('id')+'][]" placeholder="enter description" />\                 <select name="spellchange['+$(this).parent().parent('div').data('id')+']['+$(this).parent('.spell').data('id')+'][]">\                    <option value="buff">buff</option>\                    <option value="nerf">nerf</option>\                    <option value="new">new</option>\                    <option value="change">change</option>\                    <option value="bugfix">bugfix</option>\                 </select>\                 <a href="#" class="removechange">remove change</a>\             </div>');     });     $('div#championinput').on('click', 'a.removespell',function(){         $(this).closest('.spell').remove();     });     $('div#championinput').on('click', 'a.removechange',function(){         $(this).closest('.change').remove();     });  });

maybe easiest solution update indexes after each user interaction. isn't efficient code (jquery.each slower using for loops), works (demo):

renumber = function(){     $('.champion').each(function( ){         var championindex = + 1;         $(this)             .attr( 'data-id', championindex )             .find( 'input' )             .attr( 'placeholder', 'champion ' + championindex )             .end()             .find( '.spell' )             .each(function( j ){                 var spellindex = j + 1;                 $(this)                     .attr( 'data-id', spellindex )                     .find( 'select:first' )                     .attr( 'name', 'change[' + championindex + '][' + spellindex + ']' )                     .next() // input                     .attr( 'name', 'championspell[' + championindex + '][' + spellindex + ']' )                     .next() // textarea                     .attr( 'name', 'spelldescription[' + championindex + '][' + spellindex + ']' )                     .next() // 2nd select                     .attr( 'name', 'spellchange[' + championindex + '][' + spellindex + ']' );             });           });  };

call above function after item added or removed form.


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