Underscore template throwing variable not defined error

Question

I\'ve watched some videos on the topic of backbone js. This is an example straight from the video. It is from 2012, so I\'m thinking backbone rules/library have changed, but

Answer 1

This can be useful

1: If you have more then one template or sometime you are using external template so it can be useful for you inside method you can write reusable code

var V = Backbone.View.extend({
    el:'body',
    temp: function (str) {

        // reusable code
        return _.template(str);
    },
    render: function () {
        var data = { lat: -27, lon: 153 };

        // calling your view method temp        
        var tmpl = this.temp('<%= lat %> <%= lon %>');
        this.$el.html(tmpl(data));

        return this;
    }
});

var v = new V();
v.render();