Typetura’s power comes from how it can make text respond to any area of your page, not just the viewport. This means any element can become a context, like an article container, a sidebar, or the text element itself. Think of these like element querie, with the bonus that you can interpolate between breakpoints.

By default, the viewport width is a context, along with any element with the class of typetura. You can change the selectors that Typetura identifies as a context by adding a configuration before the Typetura script runs.

page.html
<script>
    window.typetura = {
        selectors: [
            ".typetura",
            ".headline",
            "article",
            "section",
            "aside"
        ]
    }
</script>
<script src="/scripts-directory/typetura.min.js"></script>

NewComponent.js
import React from 'react';
import PropTypes from 'prop-types';
​
import { typeturize } from 'typeturajs';
​
const NewComponent = (props) => {
  const ref = React.useRef();
​
  React.useEffect(() => {
    typeturize(ref.current);
  }, [ref]);
​
  return React.createElement(props.as, {
    ref,
    children: props.children,
  });
};
​
NewComponent.defaultProps = {
  as: 'newcomponent',
};
​
NewComponent.propTypes = {
  as: PropTypes.string,
  children: PropTypes.node,
};
​
export default NewComponent;

Custom contexts and inputs

The Typetura technology can be applied to much more than just text styles. You can pass any information to be used as a context like scroll position, cursor position, ambient light, ambient volume, form input, local temperature, some combination of the above, or something different entirely. Anything you can assign a value to can be used with Typetura.

To create a custom context in Typetura, the output of your custom context needs to store this value as a number with the CSS property. Do this with the --tt-bind property. So if it’s 72° F, you can query that temperature and use it as a context by adding the style --tt-bind: 72; to the parent element. Typetura always starts at a value of 0, so you may need to offset your values to match this, and a maximum can be set with --tt-max. If we want our Typetura styles to max out at 100° F, then we would write it like --tt-max: 100;.

You are pushing the boundaries of what Typetura can do with custom contexts. We will go over this in the component styles section.