I just started learning programming using MarkLogic. I followed documentation, created "sample.sjs" file like in below. https://docs.marklogic.com/guide/jsref/language#id_71272
xdmp.setResponseContentType("text/plain");
"hello"
How should I call this "sample.sjs" to display result in HTML? Or should I better include HTML code inside "sample.sjs" file?
Your SJS code must construct whatever content you want to return to the caller, including HTML. The content returned by your module becomes the response data.
There's a bit more robust example using JSON instead of HTML, here:
https://developer.marklogic.com/learn/sjs/http