How can I style text input as I type?

Question

Every time I type a character in an input field, I parse the expression so that I get:

1. An array of tokens, i.e., tokenArray=[2, *, COS, (, 4, )]
2. A cor

Answer 1

You can sort of hack styling behind it if it's just for unimportant aesthetics.

• Make the background and the text of the transparent
• Have another behind it
• Update the content of the (with appropriate styling) when the 's contents change

Here's a quick demo.