Merge pull request adambard#1659 from xssc/patch-2

[javascript/en] Added setInterval

javascript.html.markdown

@@ -291,12 +291,9 @@ myFunction("foo"); // = "FOO"
 // Note that the value to be returned must start on the same line as the
 // `return` keyword, otherwise you'll always return `undefined` due to
 // automatic semicolon insertion. Watch out for this when using Allman style.
-function myFunction()
-{
+function myFunction(){
     return // <- semicolon automatically inserted here
-    {
-        thisIsAn: 'object literal'
-    }
+    {thisIsAn: 'object literal'}
 }
 myFunction(); // = undefined
 
@@ -310,6 +307,12 @@ setTimeout(myFunction, 5000);
 // Note: setTimeout isn't part of the JS language, but is provided by browsers
 // and Node.js.
 
+// Another function provided by browsers is setInterval
+function myFunction(){
+    // this code will be called every 5 seconds
+}
+setInterval(myFunction, 5000);
+
 // Function objects don't even have to be declared with a name - you can write
 // an anonymous function definition directly into the arguments of another.
 setTimeout(function(){