javascript - onClick event in a For loop

Question

I've tried to create a loop with a for, and increment by an onclick event, but it doesn't work.

A part of js :

 var gameCase = ['', '', '', '', '', '', '', '', ''], // 9
    itemLists = $('game').getElementsByTagName('li'); // 9 items

    for( var i = 0; i < itemLists.length; i++ ) {
         // i already egal to 9
         itemLists[i].onclick = function() {
              // do something
         }
    }

But in this case, the For loop is already finished before I was able to click on an element of the list.

Moreover, I would like to get the item list I clicked and save it on a the array. I tried a gameCase[this] (in onclick function), but I don't know if it's the good way.

Answer 1

John Resig covers this topic very well in "Secrets of the JavaScript Ninja" ( http://ejohn.org/apps/learn/#59 )

You'll need to create a temporary scope to preserve i's value

for ( var i = 0; i < itemLists.length; i++ ) (function(i){ 
  itemLists[i].onclick = function() {
      // do something
  }
})(i);

Edit:

var gameCase = ['', '', '', '', '', '', '', '', ''], // 9
$listParent = $('game').find('ul'), // li's parent
itemLists = $('game').getElementsByTagName('li'); // 9 items

var listHandler = (function() {
  var i = 0;

  return function() {
    // $(this) will in here refer to the clicked li
    i++ // increment i

    if ( i === 9 ) {
      $listParent.off('click', 'li', listHandler); //remove eventhandler when i reaches 9
    }
  }
}());

$listParent.on('click', 'li', listHandler); // attach eventhandler to ul element

This should do what you want, cant test it right now since I'm at work.