Skip to main content

Backbone.js: `extend` undefined?



Just getting started with Backbone.js. Simply including Backbone (either dev/production versions) causes the error:





Uncaught TypeError: Cannot call method 'extend' of undefined on Line 128:





// Attach all inheritable methods to the Model prototype. _.extend(Backbone.Model.prototype, Backbone.Events, {



Source: Tips4all

Comments

  1. The issue was that I wan't loading underscore.js. I totally missed that dependency in the docs. Duh.

    ReplyDelete

Post a Comment

Popular posts from this blog

Slow Android emulator

I have a 2.67 GHz Celeron processor, 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding is that the Android emulator should start fairly quickly on such a machine, but for me it does not. I have followed all instructions in setting up the IDE, SDKs, JDKs and such and have had some success in staring the emulator quickly but is very particulary. How can I, if possible, fix this problem?