for-loop-variable-capture.js

// This won't work as you probably want
for (var i = 0; i < 10; i++) {
  handlers.push(function() {
    use(i);
  });
}

// This won't work due to "var yanking"
for (var i = 0; i < 10; i++) {
  var j = i;
  handlers.push(function() {
    use(j);
  });
}

// This will capture the value of i correctly.
for (var i = 0; i < 10; i++) {
  (function(j) {
    handlers.push(function() {
      use(j);
    });
  })(i);
}