javascript - no triggering on click event -

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this simple intersting issue. suppose have 2 sections of respective class .toggle0 , .toggle1, suppose want display .toggle0 , hide .toggle1 when clicking on tag .footer0, , vice-versa : want display .toggle1 , hide .toggle0 when clicking on tag .footer1. code works correctly

$('.toggle1').hide();   var i=0;     $(".footer"+i+"").click(function(){         $(".toggle"+(i+1) %2+"").hide();         $(".toggle"+i+"").show();     });   var j=1;     $(".footer"+j+"").click(function(){         $(".toggle"+(j+1) %2+"").hide();         $(".toggle"+j+"").show();     });

but doesn't work in sense nothing happens on click event 

for(var i=0;i<2;i++){     $(".footer"+i+"").click(function(){             $(".toggle"+(i+1) %2+"").hide();             $(".toggle"+i+"").show();         }); }

if put this

      $('.toggle1').hide();       var i=0;         $(".footer"+i+"").click(function(){             $(".toggle"+(i+1) %2+"").hide();             $(".toggle"+i+"").show();         });        =1;         $(".footer"+i+"").click(function(){             $(".toggle"+(i+1) %2+"").hide();             $(".toggle"+i+"").show();         });

.toggle1 displays , .toggle0 hides when clicking on tag .footer1 .toggle0 not display , .toggle1 not hide when clicking on tag .footer0 . seems second click event takes precedence upon first

the i within the click handler isn't evaluated until click, @ point value has changed when handler bound. if want go route, need create closure. here's 1 method so:

for (var = 0; < 2; i++) {     $(".footer" + + "").click(function () {         var idx = i;         return function () {             $(".toggle"+(idx+1) %2+"").hide();             $(".toggle"+idx+"").show();             console.log(idx);         }     }()); }

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