AngularJS Filters

[Haseena Begum，修改在6 年前。]

Hello Everyone,

I am exploring the AngularJS with Liferay. When i try to utilize filters like json, uppercase, lowercase on some data in the expressions.
{{lang | json}}
{{"City: " +capital.City | lowercase + " State: "+capital.State | uppercase }}

Am getting the warning as "The word 'uppercase' is not correctly spelled" and functionality is not working

Is this not supported or am I missing anything?

Thank you