Declaring Functions notes

Hermanya · Hermanya · commit 0881deb64e9d · 2014-04-14T14:13:52.000-04:00
diff --git a/functions/declare.md b/functions/declare.md
@@ -8,6 +8,8 @@ function double(x) {
 }
 ```
 
+>*Note:* the function above **may** be referenced before it has been defined.
+
 Functions are also values in JavaScript; they can be stored in variables (just like numbers, strings, etc ...) and given to other functions as arguments :
 
 ```javascript
@@ -16,6 +18,8 @@ var double = function(x) {
 };
 ```
 
+>*Note:* the function above **may not** be referenced before it is defined, just like any other variable. 
+
 ---
 
 Declare a function named `triple` that takes an argument and returns its triple.
diff --git a/functions/declare.md~ b/functions/declare.md~
@@ -0,0 +1,44 @@
+# Declaring Functions
+
+Functions, like variables, must be declared. Let's declare a function `double` that accepts an **argument** called `x` and **returns** the double of x :
+
+```javascript
+function double(x) {
+    return 2 * x;
+}
+```
+
+*Note*: the function above **may** be referenced before it has been defined.
+
+Functions are also values in JavaScript; they can be stored in variables (just like numbers, strings, etc ...) and given to other functions as arguments :
+
+```javascript
+var double = function(x) {
+    return 2 * x;
+};
+```
+
+*Note*: the function above **may not** be referenced before it is defined, just like any other variable. 
+
+---
+
+Declare a function named `triple` that takes an argument and returns its triple.
+
+```js
+
+```
+
+```js
+var triple = function(x) {
+    return x * 3;
+}
+```
+
+```js
+assert(triple);
+assert(triple(4) === 12);
+assert(triple(10) === 30);
+```
+
+---
+
