JavaScript Use-API vs Java Use-API

[rodrigop8127141]

Is there any known limitation/restriction on using JavaScript Use-API?

Reading adobe documentation (links below) there is no comparison between the two technologies. 

Do you know something that can't be accomplished by using JavaScript Use-API that would require to use Java Use-API? Is JavaScript Use-API a subset of Java Use-API? Are they fully compatible?

Thank you.

https://docs.adobe.com/docs/en/aem/6-0/develop/sightly/use-api-in-javascript.html

https://docs.adobe.com/docs/en/aem/6-0/develop/sightly/use-api-in-java.html

Please notice that this is NOT a question about: "do you prefer this or that?" or "what is you personal choice?" The purpose of my question is only to know if there are known limitations of JavaScript API over Java API

[kautuk_sahni · Accepted solution]

Hi

As per my understanding, there are no limitation between both.

Documentation Link:- https://docs.adobe.com/docs/en/aem/6-1/develop/sightly.html#Choosing%20The%20Appropriate%20Use%20API

Choosing The Appropriate Use API

Sightly offers two Use API. The following table gives an overview of the pros and cons of each API.

                

	Java Use-API	JavaScript Use-API
Pros	faster can be inspected with a debugger easy to unit-test	can be modified by front-end devs is located within the component (keeping the view logic of a component close to it's corresponding template)
Cons	cannot be modified by front-end devs looks odd when placed within a component	slower no debugger (yet) harder to unit-test

For page components, it is recommended to use a mixed model, where all model logic is located in Java, providing clear APIs that are agnostic to anything that happens in the view (i.e. within the components). AEM comes with great default models like the Page or the Resource API that should be able to cover most cases.

All view logic that is specific to a component should be placed within that component as JavaScript, because it belongs to that component.

I hope this will help you.

Thanks and Regards

Kautuk Sahni

[Former Community Member]

thank you very much.