On Sun, Aug 28, 2011 at 9:22 PM, Kevin Lynagh <klyn...@gmail.com> wrote: > I am having trouble using ClojureScript to call JavaScript functions > that exploit prototype injection. > If I'm reading `defmethod :emit invoke` correctly, > > > https://github.com/clojure/clojurescript/blob/master/src/clj/cljs/compiler.clj#L513 > > ClojureScript always seems to compile f(x) JavaScript calls as > > f.call(null, x) > > which trip up any functions that rely on `this` to have certain > properties. > I have two questions: > > 1) why are function calls compiled to the `f.call(null, ...)` form > rather than just `f(...)`? Is it to support the Closure Compiler? > > 2) What is the appropriate way to use JavaScript functions that rely > on `this`? > Is there some way to emit `f.call(f, ...)`, or do I need to use `(js* > "f(...)")`? > > For reference, here is a minimal JavaScript example of the JavaScript > prototype injection pattern: > > var p_injection = function(){}; > p_injection.one = function(){ return 1; }; > > var MyClass = function(){}; > > var x = new MyClass(); > x.two = function(){ return this.one() + 1; }; > x.__proto__ = p_injection; > x.two(); // 2 > x.two.call(null); // error, object has no method "one()"
Have you tried calling the method using the interop form? (. x (two)) --Chouser -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
