Problems with event function binding in backbone.js app

Question

$(function(){
  window.Placements = Backbone.View.extend({
    el: $("#app"),
    events: {
      "submit form": "updatePlacement"
    },
    updatePlacement: function(e) {
      e.preventDefault();
      alert('foo');
    }
  });
  window.App = new Placements;
})

Running results in:

TypeError: Result of expression '$(this.el).delegate' [undefined] is not a function.

tastydiff · Accepted Answer · 2011-05-24 16:35:01Z

3

I was using jquery 1.3.2 but backbone requires a later version (no version number is mentioned in the docs)

answered May 24, 2011 at 16:35

tastydiff

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1 Comment

rfunduk Over a year ago

Backbone lists jQuery 1.4.2 in it's "Downloads & Dependencies" section.

Masiar · Accepted Answer · 2011-05-24 08:21:05Z

1

I think it's because you are setting el: $("#app"), and then you try to get again $(this.el) while in this.el you already have the HTML object $(#app). Try to put el: '#app' and see what happens.

answered May 24, 2011 at 8:21

Masiar

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Comments

Running Turtle · Accepted Answer · 2011-05-24 09:41:37Z

0

I think there may be a typo in you events object:

event types should be first:

submit form instead of form submit

answered May 24, 2011 at 9:41

Running Turtle

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3 Comments

tastydiff Over a year ago

You're right, I've changed this but I still get the same error message

Running Turtle Over a year ago

Have you tried with an initialize method : _.bindAll(this, 'render') ?

tastydiff Over a year ago

Tried that just now but it doesn't make any difference

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