I'm learning backbone.js and I'm pretty much in the beginning. I want to add a template through underscore template method but it's not working for me. I searched for this error but couldn't fix it myself. How can I move forward if it's not showing the template. Need some help guys.
Here is the code (this code is from addyosmani's book backbone-fundamentals):
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>testing</title>
</head>
<body>
<script src="scripts/jquery.js"></script>
<script src="scripts/underscore.js"></script>
<script src="scripts/backbone.js"></script>
<script>
var TodoView = Backbone.View.extend({
tagName: 'li',
// Cache the template function for a single item.
todoTpl: _.template( $('#item-template').html() ),
events: {
'dblclick label': 'edit',
'keypress .edit': 'updateOnEnter',
'blur .edit': 'close'
},
// Re-render the titles of the todo item.
render: function() {
this.$el.html( this.todoTpl( this.model.toJSON() ) );
this.input = this.$('.edit');
return this;
},
edit: function() {
// executed when todo label is double clicked
},
close: function() {
// executed when todo loses focus
},
updateOnEnter: function( e ) {
// executed on each keypress when in todo edit mode,
// but we'll wait for enter to get in action
}
});
var todoView = new TodoView();
// logs reference to a DOM element that cooresponds to the view instance
console.log(todoView.el);
If the template is defined after your script it will not work.
wrap your entry point into
$(function(){
var todoView = new TodoView();
});
so you dont get this kind of error.
I got the same error. Make sure that template with defined id exists on the page. In my case I used wrong id for template, and this was a reason of error "TypeError: n is undefined".
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