javascript - declare function properties inside -

i know can set function property below

function f(){} f['a']=1;//setting function property outside alert(f.a)//alert 1 

but possible set property of function below or there other similar way of declaring properties inside function,rather outside?

function f() { a: 1 }  alert(f.a);  //get 1 output 

edit:
looking way not use object creation function constructor or use prototypes

no, there not. inside function goes body, i.e. code executed when function called. function literal / declaration not object literal, if both use curly braces.

if you're looking more declarative way assignment put static properties on function, use kind of extend functionality:

var f = object.assign(function f() {}, {     a: 1 }); 

(all of _.extend, $.extend, object.assign work purpose - otherwise use f.a =)