I have been writing javascript for one or two months , I never used Function keyword , like Function.method(); when I define function , I simply define it as :
function fooBar () {};
Can you give me an example when using Function is more convenient ?
You shouldn't use the Function constructor so often, it basically uses code evaluation to build a function.
It requires string arguments, being the last argument the function body, and the previous ones will be the arguments of the new function itself, for example:
var add = new Function("a", "b", "return a + b;");
add(5,5) == 10;
When you should use it?
As I said not so often, I personally try to avoid them since they use code evaluation.
A thing to note is that no closures are created when functions are built in this way, which can be a good thing for some performance circumstances, for example to shorten the process of identifier resolution, but you should use them with care...
Every function in JavaScript is actually a Function object.
Read Function
Function objects created with the Function constructor are parsed when the function is created. This is less efficient than declaring a function and calling it within your code, because functions declared with the function statement are parsed with the rest of the code.
this function can you call from either keyboard events of mouse events
