*Thanks allot. You help me * On Mon, Oct 17, 2011 at 9:33 AM, T.J. Crowder <[email protected]>wrote:
> Hi, > > You haven't given your `player` object a method called `loginfo` at > all, which is why you're getting that error (the property > `fred.loginfo` will come back `undefined`, which naturally fails when > you try to execute it via `()`). Also, you have a typo where you're > creating your `promote` function, it's a `promte` instead, so if you > got past the `loginfo` call you'd run into the same problem with > `promote`. And note that in your test code at the end, you create > `bob` and `alice` instances but you continue to call the methods on > the `fred` instance. > > You said you're a new programmer. One thing to take away from this is > that computers are incredibly picky about small details. :-) > > FYI, if a function is a constructor function (intended to be used with > `new`, like your `player` function), the convention is to use initial > caps on the name, e.g. `Player` with a capital `P`. Other functions > are written in camelCase. This helps differentiate functions that > aren't constructor functions from ones that are. It's only a > convention, but it's very widely-used. > > If you're new to JavaScript, I did a series of blog posts/articles on > the language you may find helpful (or not, of course). If you start > here[1] and then work your way forward through the posts > chronologically, it may be helpful. > > [1] > http://blog.niftysnippets.org/2008/02/javascripts-curiously-powerful-or.html > > HTH, > -- > T.J. Crowder > Independent Software Engineer > tj / crowder software / com > www / crowder software / com > > On Oct 16, 6:55 pm, Yossi <[email protected]> wrote: > > HI, > > I am new programmer. > > I looking to work with OOP in javascript. > > I heard about prototypejs, and I try to run my first CODE in > > firefox7.0.1 > > And Prototype JavaScript framework, version 1.7 . > > > > The err that I got is "fred.loginfo is not function" > > > > below the code: > > ************************ > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> > > <html> > > <head> > > <script type="text/javascript" src="/prototype_js/prototype.js"></ > > script> > > <title></title> > > </head> > > <body> > > <script language="javascript" type="text/javascript"> > > function player(n,s,r){ > > this.name=n; > > this.score=s; > > this.rank=r; > > > > } > > > > player.prototype.promte=function(){ > > this.rank++; > > console.log("my new rank is: ",this.rank); > > > > } > > > > var fred=new player("fred,10000,5"); > > fred.loginfo(); > > fred.promote(); > > > > var bob=new player("bob,50,1"); > > fred.loginfo(); > > fred.promote(); > > > > var alise=new player("alise,233,33"); > > fred.loginfo(); > > fred.promote(); > > > > </script> > > </body> > > </html> > > -- > You received this message because you are subscribed to the Google Groups > "Prototype & script.aculo.us" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/prototype-scriptaculous?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Prototype & script.aculo.us" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.
