Can You Still Read Code?
Predict the output of 155 short JavaScript snippets and learn why
Can You Still Read Code? is a game of 155 JavaScript questions that look easy and are not. Each round shows a few lines of code and four possible outputs. You pick one, it counts as your answer, and a short explanation shows why the right answer is right.
Free · No login · Browser · Intermediate
About Can You Still Read Code?
The questions target the parts of JavaScript that trip people up; the opening one, for example, tests how var and let behave before they are declared. The maker pitches it as a short workout for your mental model of the language at a time when agents write much of the code. It suits working JavaScript developers and interview preparation.
It is free, open source, runs in the browser and needs no account or cookies. Progress stays on your device, and it installs as an offline web app. The questions come from Lydia Hallie's javascript-questions collection under MIT.
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