Question

In an underscore template, is there any other way to access an attribute besides by its name? I’ve got one called “2a” and I cannot reference it directly, due to its first character being a number. For example, this doesn’t work:

            <input type="checkbox" name="6a"  <%= 6a ? "checked" : "" %>>

Thanks!

Answer 1

You have a few options other than renaming the offending attribute.

Underscore’s _.template has a variable option:

By default, template places the values from your data in the local scope via the with statement. However, you can specify a single variable name with the variable setting.

So you could do this:

<input type="checkbox" name="6a"  <%= v['6a'] ? "checked" : "" %>>

and this:

var t = _.template($('#whatever').html(), null, { variable: 'v' });
var h = t({ '6a': true });​

Demo: http://jsfiddle.net/ambiguous/hBhfu/

You could also wrap it manually when you call the template function:

t({ v: { '6a': true  }});

You’d use the same template as above in this case.

Demo: http://jsfiddle.net/ambiguous/8AZKw/