{{if !DATA_PROPERTY}} throws an undefined error

[jswartwood]

{{if !DATA_PROPERTY}}

and

{{if DATA_PROPERTY == undefined}}

both throw an error... I wind up doing:

{{if DATA_PROPERTY}}{{else}} ... {{/if}}

which is awkward. If the top two approaches are impossible to solve, please provide a new template syntax for

{{not}} ... {{/not}}

or something similar.

[BorisMoore]

The right test is {{if typeof DATA_PROPERTY==="undefined"}}

In JavaScript code if (DATA_PROPERTY==undefined) will not work unless you have a variable called undefined which is undefined. :). In your context, you don't...

Closing the issue.