Merge pull request GitbookIO#5 from mambocab/master

AaronO · AaronO · commit cce873310b84 · 2014-04-03T17:46:48.000-07:00
Fix typos in function lesson
diff --git a/functions/declare.md b/functions/declare.md
@@ -1,14 +1,14 @@
 # Declaring Functions
 
-Functions like variables must be declared. Lets declare a function `double` which accepts an **argument** called `x` and **returns** the double of x :
+Functions, like variables, must be declared. Let's declare a function `double` which accepts an **argument** called `x` and **returns** the double of x :
 
 ```javascript
 function double(x) {
     return 2 * x;
 }
 ```
 
-Functions are also values in JavaScript, they can be stored in variables (just like numbers, strings, etc ...) and given to other functions as arguments :
+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) {
@@ -18,7 +18,7 @@ var double = function(x) {
 
 ---
 
-Declare a function named `triple` that takes and argument and returns it's triple.
+Declare a function named `triple` that takes an argument and returns its triple.
 
 ```js
 
