From: John Lam <drjflam@...>
Date: 2006-05-18T23:31:28+09:00
Subject: Re: Is there an equivalent to instance_eval in JavaScript?

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Thanks, Marcus! I'll let you know if some corner cases crop up (my
JavaScript is pretty rusty).

BTW, what is it with JavaScript and guys from Sweeden? :)

Cheers,
-John
http://www.iunknown.com


On 5/18/06, Marcus Andersson <m-lists@bristav.se> wrote:
>
> No, I don't think so. But you can probably add it.
>
>         Object.prototype.instance_eval =3D function(code_or_function) {
>           var func =3D null;
>           if(typeof(code_or_function) =3D=3D "function") {
>             func =3D code_or_function;
>           } else if(typeof(code_or_function) =3D=3D "string") {
>             func =3D function() { eval(code_or_function); }
>           }
>           if(func) {
>             return func.apply(this);
>           }
>         }
>
>         var o =3D { helloPhrase : "hello" };
>         o.instance_eval(function() {
>           alert(this.helloPhrase);
>         });
>
>         o.instance_eval("alert(this.helloPhrase);");
>
> Although you might not want to add it to Objects prototype and do it as
> a function that takes the receiving object as a parameter. I'm also not
> 100% sure that this captures the full semantics of instance_eval altough
> I guess it's quite close.
>
> /Marcus
>
>
>

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