Add Name Definition to "Function" in Javascript

Question

I would like to do something like this :

var f = Function;
var f1 = f(){
    //do stuff
}

f1(); // call f1 as a function

The main idea is to create a new name and a new way to create a function : instead of doing function a() do f a().

Thanks in advance.

What would you need this for? Btw, Function needs to be called to create new functions from code. — Bergi
– Bergi, Commented Jan 20, 2014 at 14:33
Simply because I want to make my code shorter, even if there is no other big deal... — nobe4
– nobe4, Commented Jan 20, 2014 at 14:35
If you set a variable to a function, it is already the function. Just call it with the parenthesis. — Vinicius Monteiro
– Vinicius Monteiro, Commented Jan 20, 2014 at 14:36
You cannot, that would be invalid JS. However, you might want to have a look at some compile-to-javascript languages with much more concise syntax, like coffeescript.org/: f1 = () -> ; — Bergi
– Bergi, Commented Jan 20, 2014 at 14:38
yeah this is the idea, ruby also has a short synthax for function definition, I wanted to redefine symply this in JS, but if it's not possible, too bad ... — nobe4
– nobe4, Commented Jan 20, 2014 at 14:40

Quentin · Accepted Answer · 2014-01-20 14:33:19Z

3

JavaScript provides no means by which you can extend the language with additional keywords.

answered Jan 20, 2014 at 14:33

Quentin

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6 Comments

nobe4 Over a year ago

and binding a function, split the arguments and do all the binding needed ?

Quentin Over a year ago

You aren't trying to use f as a function though, so how is that relevant?

nobe4 Over a year ago

yes I know, but this is because I don't know how to do this and if this is possible...

basilikum Over a year ago

@Nobe4 simply put, every time you want to define a function, you have to use the function keyword. There is no way around this.

Quentin Over a year ago

There are ways around it (the Function constructor function), they are just nasty and more complicated. (And that isn't a one-off lump of nasty, complication, you have to deal with it every time you create a function).

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bouscher · Accepted Answer · 2014-01-20 14:58:07Z

1

Not quite what you meant, but maybe you can play around with this:

var f=function(){ 
return function(){alert(1)};  
}; 

var x=f(); 
x();

answered Jan 20, 2014 at 14:58

bouscher

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