javascript - Binding a constructor -

suppose have javascript class:

function generalclass(a, b, c) { ... } 

it constructed this:

var g = new generalclass(a, b, c); 

and want create specificclass, same generalclass, bound values, a=1 , c=3.

i want construct class this:

var s = new specificclass(b); 

in other languages, there several ways this:

• i can make specificclass inherit generalclass, , have constructor of specificclass call of generalclass assignment want.
• i can add generalclass field inside specificclass, , delegate method calls it.

but looking shorter , more elegant way in javascript - way enable me create many different specificclass's on fly.

you can make specific function creates generalclass bound parameters.

function generalclass(a, b, c) { ... }  function specific(b) {      var = 1, c = 3;     return new generalclass(a, b, c); }  var s = specific(2);