Getting Javascript TypeError when trying to access method on my model

Question

I created a simple model and am trying to test out the setter method on it. When using it in the Chrome javascript console I get a TypeError with a type of "undefined_method".

Here's a link to the code http://jsfiddle.net/cpeele00/Rq4Tj/

I am calling it like so:

Model.Movie.setTitle('Resident Evil');

Any help would be greatly appreciated.

Matt Ball · Accepted Answer · 2011-10-13 15:18:57Z

0

You're calling change on the string 'Resident Evil':

setTitle : function(title){

    this.title = title;

    this.title.change(function(){ // <-- here
       console.log('title has changed to: ' + title); 
    });

},

There is no such method defined on strings. If you're trying to fire a change event to notify listeners that the title changed, you'll have to approach this from a different angle.

answered Oct 13, 2011 at 15:18

Matt Ball

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6 Comments

cpeele00 Over a year ago

Thanks Matt, I appreciate it. Can you point me in the right direction for how to accomplish this please? :-)

Matt Ball Over a year ago

Searching is easy but I'll do it for you anyway

cpeele00 Over a year ago

thanks Matt. Based on some of those links, here's what I have which is still throwing the same error setTitle : function(title){ this.title = title; //console.log(this.title); this.title.bind('titleChangedEvent', function(){ console.log('your title changed') }); this.title.trigger('titleChangedEvent'); },

Matt Ball Over a year ago

Dude, title is still a string. It doesn't have bind or trigger functions. It's just a string.

cpeele00 Over a year ago

Dude, this is exactly why I am asking for assistance. Instead of sarcastically stating how easy searching is (by the way none of those helped) just provide a simple code example. If you are not able, then please don't waste my time with your comments.

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stivlo · Accepted Answer · 2011-10-13 15:23:50Z

0

There is a problem with setTitle() method, if I comment out the three lines commented below it works.

    setTitle : function(title){

        this.title = title;
        console.log(title);

        //this.title.change(function(){
        //   console.log('title has changed to: ' + title);
        //});

    },

answered Oct 13, 2011 at 15:23

stivlo

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