Question

I am a newbie in JavaScript and so don’t really understand its object model, but as I understood I have to do something like.

function set_test(text) { this['test'] = text; };
a = {};
text = 'ok';
a.prototype.ok = set_test(text);
alert(a['test']); #Should be 'ok'
text = 'fail';
a.ok;
alert(a['test']); #Should be 'ok'

Can somebody say what’s wrong here?

Answer 1

Objects don’t have a prototype by default, and a.prototype.ok = set_test(text); would make ok equal to the return value of set_test() which is undefined.

Try doing it this way instead:

function set_test(text) { this['test'] = text; };
var a = {
    ok: set_test
},
text = 'ok';

a.ok(text);
alert(a['test']); //Should be 'ok'

text = 'fail';
a.ok(text);
alert(a['test']); //Should be 'fail'