'make js' successed, then what to do next to browser the sky using my browser?

[Yang89C]

After compiling emsdk with version 1.40.1 under ubuntu, then trying 'make js' under stellarium-web-engine, i got the two files: js and wasm.
I tried launch the stellarium-web-engine.html under simple-html, but there was vue version error.
Is there any way to achieve seeing stars under arbitrary location and time ??
I tried to write some htmls, however, none of them worked, all i got is a blank page.