underscore.js each, iterator reference error

Question

I'm trying to use underscore.js templating to iterate over an object

var list = "<% _.each(resgistrations, function(resgistration) { %> <tr><td><%= i %></td><td><%= resgistration %></td></tr> <% }, i); %>";

I don't understand why i won't work as my iterator. I get a reference error i is not defined. This seems like it's straight out of the docs for _.each

You are not creating the index parameter; of course i is undefined. — Evan Davis
– Evan Davis, Commented Nov 26, 2013 at 20:47

Alessandro Minoccheri · Accepted Answer · 2013-11-26 20:50:37Z

3

You are missing the second parameter, the iterator i. Try this:

var list = "<% _.each(resgistrations, function(resgistration, i) { %> <%= i %><%= resgistration %> <% }); %>";

edited Nov 26, 2013 at 20:50

answered Nov 26, 2013 at 20:47

Alessandro Minoccheri

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Barney · Accepted Answer · 2013-11-26 20:49:17Z

0

You specified the first parameter as registration for the iterator value, and didn't assign a second parameter for the index — or rather, you passed it in the wrong place. The fixed code would be:

var list = "<% _.each(resgistrations, function(resgistration, i) { %> <tr><td><%= i %></td><td><%= resgistration %></td></tr> <% }); %>";

answered Nov 26, 2013 at 20:49

Barney

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