I have a question about my underscore template. Here is the section of code in question:
<% if (typeof title !== "undefined") { %>
<p class="title"><%= title %></p>
<% } %>
Is there a way to avoid using the global scope when rendering this template without name spacing the data? I am unable to safely remove title from the global scope as it is not my own code and requires reliance on undefined. Any suggestions would be greatly appreciated.
ahem ahem my patch, scans template for keys and generates placeholders
https://github.com/jashkenas/underscore/issues/237
if you're hesitant to modify a core library with code from the web :)
you could enclose the template in a try-catch block to display an error message
<% try { %>
TEMPLATE OF DOOM FULL OF FAIL
<% } catch (error instanceof ReferenceError){ %>
GENERIC REFERENCE ERROR MESSAGE
<% } %>
alternatively, pass in an object wrapper, and access the wrapped key
for example, observe how "dataIWasGoingToPutIntoTemplateUnwrapped" is encapsulated within the key "data"
var dataIWasGoingToPutIntoTemplateUnwrapped = {
iAmVar: "hello",
iHasVarKThxBye: "world"
};
var underscoreTemplate = _.("<%= data.iAmVar %> and <%=data.iHasVarKThxBye%>");
console.log(underscoreTemplate({data:dataIWasGoingToPutIntoTemplateUnwrapped }));
Unfortunately, the answer is a resounding no (special thanks to Bergi for their input). Despite my efforts to avoid it, I ultimately had to tackle the task of updating numerous intricate underscore templates from <%= foo %> to <%= data.foo %>.
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