Is it possible to test for custom data-attributes in css-in-js?

Question

I am trying to reference data attributes from JSS, test for them, and apply the styles if the test is true. However, when I run the code below, it does not apply "color:green" and I have no idea why!

import React from "react";
import { createUseStyles } from "react-jss";

const useStyles = createUseStyles({
  statusDiv: {
    backgroundColor: "lightGrey",
    padding: "10px",
    fontWeight: "bold",
    '[data-status="OPEN"]': {
      // no effect ..?
      color: "green",
    },
  },
});

const App = () => {
  const classes = useStyles();

  return (
    <div data-status="OPEN" className={classes.statusDiv}>
      OPEN
    </div>
  );
};

export default App;

Answer 1

That's an interesting case. What you can do is:

export default {
  '@global' : {
      'div.testClass[data-custom="value"]': {
      color: 'red',
      border: '1px, solid navy'
    }
  }
}

This assumes a JSS plug-in @global installed, but this is something I think is quite useful to have. More about the plug-in @global - here

And if you want to address a data- attribute like in your edited example 0 you should do:

testClass: {
  '[data-custom="value"]': {
    //styles for the custom data
  }
}

And in the markup you'll have (depends on the way you extracting the class):

testClass.classes['[data-custom="value"]']

... styles for the custom data will be applied by the above.

The way you wrote in your last edit will not work. You should add a small bit though. To work the code example you provided:

...
fontWeight: "bold",
  '& [data-status="OPEN"]': {
  // no effect ..?
  color: "green",
},

The & require a nesting plug-in setup - here is more about it.

Answer 2

If your JS looks like this:

<div data-customAttribute={value} className={classes.testClass}></div>

Your CSS will look like:

.testClass[data-customAttribute="value"] {
  // your styles
}

Answer 3

Thanks to the amazing support from @Vladyn, the following code demonstrates this working perfectly:D

import React from "react";
import { create } from "jss";
import { JssProvider, createUseStyles } from "react-jss";
import nested from "jss-plugin-nested";

const jss = create();
jss.use(nested());

const useStyles = createUseStyles({
  statusDiv: {
    backgroundColor: "lightGrey",
    padding: "10px",
    fontWeight: "bold",
    '&[data-status="OPEN"]': {
      color: "green",
    },
    '&[data-status="CLOSED"]': {
      color: "red",
    },
  },
});

const App = () => {
  const classes = useStyles();
  const status = "OPEN";

  return (
    <JssProvider jss={jss}>
      <div data-status={status} className={classes.statusDiv}>
        {status}
      </div>
    </JssProvider>
  );
};

export default App;