suggest to place examples in file

dynajoe · dynajoe · commit 73dfc762bdae · 2013-08-12T17:49:06.000-05:00
diff --git a/_posts/2012-11-5-async.md b/_posts/2012-11-5-async.md
@@ -20,6 +20,8 @@ for (var i = 0; i < 100; i++) {
 console.log('You might think this gets printed last.')
 {% endhighlight %}
 
+Copy the code above into a new file that you'll use for the rest of this lab. The points being illustrated require to be running the examples from a .js file.
+
 Notice the value printed is 100, which is the terminal condition for this loop. This is because the callback for setTimeout doesn't actually get executed until the for loop has completed. Any other statements after the for loop would also be executed before the callback. This is, in part, because Node is single threaded. The event loop hasn't had a chance to invoke your callback. In any case, all of the callbacks are being fired with the same value of `i`.
 
 How do we avoid this? The important concept here is how scope is handled in JavaScript. Unlike other languages that use block level scope, JavaScript's scope is at a function level. We can get around this problem by introducing a new scope in each iteration of the loop to capture the value of `i` at that moment:
