diff options
| -rw-r--r-- | javascript.html.markdown | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/javascript.html.markdown b/javascript.html.markdown index b6d4c8b7..348cbff5 100644 --- a/javascript.html.markdown +++ b/javascript.html.markdown @@ -31,8 +31,8 @@ doStuff(); // wherever there's a newline, except in certain cases. doStuff() -// So that we don't have to worry about those certain cases (for now), we'll -// leave them on. +// Because those cases can cause unexpected results, we'll keep on using +// semicolons in this guide. /////////////////////////////////// // 1. Numbers, Strings and Operators @@ -218,6 +218,18 @@ function myFunction(thing){ } 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() +{ + return // <- semicolon automatically inserted here + { + thisIsAn: 'object literal' + } +} +myFunction(); // = undefined + // JavaScript functions are first class objects, so they can be reassigned to // different variable names and passed to other functions as arguments - for // example, when supplying an event handler: |