connection beetwen html, js and cocoa by webkit

Question

i have cocoa app with embed webkit, which show simple html with <input id="first_name" type="text"> and <input id="start" type="button">

and i want this: when you click #start button, show up a regular cocoa NSAlert with #first_name value. Well, i need to somehow organize a connection between html,js and cocoa.

it it possible?

Answer 1

it turns out that it's possible: http://developer.apple.com/mac/library/documentation/AppleApplications/Conceptual/SafariJSProgTopics/Tasks/ObjCFromJavaScript.html

working example: http://developer.apple.com/mac/library/samplecode/CallJS/Introduction/Intro.html#//apple_ref/doc/uid/DTS10004241