How can I enable 'show-language' feature of prism?

[CCandle]

for now I'm writing something about latex, so I switched to prism to highlight my code.
and I fond that primjs support to show language of my code, but how?
I tried

show_language: true

but obviousl it's not working.
since the documet of hexo says:

• Show Languages: Hexo will always have data-language attribute added as long as language is given for the code block.

how can I enable it?

[SukkaW]

Hexo's built-in prism will always have the data-language attribute present, and there is no option to disable data-language from Hexo's output.

You still have to include the prism plugin and its CSS in your theme in order for this feature to work.

[CCandle]

yes I noticed that there is an atrribute data-language, but for now there is no language shown on my website. how can I enable that?

(I notice that the theme seems doesn't work for now, that doesn't matter)

[stevenjoezhang]

You need to load corresponding front-end plugins. Please contact the developer of the theme you're using for help