diff options
| -rw-r--r-- | javascript.html.markdown | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/javascript.html.markdown b/javascript.html.markdown index 1f188832..bcaf9a29 100644 --- a/javascript.html.markdown +++ b/javascript.html.markdown @@ -211,16 +211,6 @@ function myFunction(thing){ } myFunction("foo") // = "FOO" -// Functions can also be defined "anonymously" - without a name: -(function(thing){ - return thing.toLowerCase() -}) -// Note: Stand-alone function declarations require an identifier name. -// Anonymous functions are values, not declarations, so they must be -// treated as a value. We wrap ours here in ( ) to do so, or you could assign -// it to a variable, or pass it as a parameter to another function. -// (we can't call our function, since we don't have a name to refer to it with) - // 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: @@ -229,9 +219,16 @@ function myFunction(){ } setTimeout(myFunction, 5000) +// Functions can also be defined "anonymously" - without a name: +var lowerFunction = function(thing){ + return thing.toLowerCase() +} +lowerFunction("Foo") // = "foo" +// (note: we've assigned our anonymous function to a variable - if we didn't, we +// wouldn't be able to access it) + // You can even write the function statement directly in the call to the other // function. - setTimeout(function myFunction(){ // this code will be called in 5 seconds' time }, 5000) |