Add Splat Arguments To A Function as a javascript til.

README.md

@@ -92,6 +92,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 ### javascript
 
 - [Character Codes from Keyboard Listeners](javascript/character-codes-from-keyboard-listeners.md)
+- [Splat Arguments To A Function](javascript/splat-arguments-to-a-function.md)
 - [Throttling A Function Call](javascript/throttling-a-function-call.md)
 - [Truthiness of Integer Arrays](javascript/truthiness-of-integer-arrays.md)
 

javascript/splat-arguments-to-a-function.md

@@ -0,0 +1,19 @@
+# Splat Arguments To A Function
+
+Often times you have a function that takes a certain set of arguments. Like
+the following `adder` function:
+
+```javascript
+var adder = function(a,b,c) {
+  return a + b + c;
+};
+```
+
+But you are left trying to pass in arguments as an array (e.g. `[1,2,3]`).
+You want to be able to *splat* the array of arguments so that it matches the
+function declaration. This can be done by using `apply`.
+
+```javascript
+> adder.apply(undefined, [1,2,3])
+6
+```