Brilliant. I've always wanted this for w3schools.
1 karma · joined February 15, 2018
Here's a bug: Your search uses regular expressions without validating them.
1. Go to "https://www.soyoulearn.com/app/#/cards/search/"
2. Type: c++
3. The autocomplete errors and page goes blank
4. Inspector Console: "SyntaxError: Invalid regular expression: /c++/: Nothing to repeat"