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– video by @keycat.dev.br
, 6 views, duration 0:26
why does react keep feeding the wrong cat? key={index} bug, visualized. use a stable id.
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– video by @keycat.dev.br
, 211 views, duration 0:23
javascript typeof quiz: typeof null and typeof NaN. what do they return?
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– video by @keycat.dev.br
, 340 views, duration 0:41
react bug: input loses focus after every keystroke. can you spot the line?
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– video by @keycat.dev.br
, 784 views, duration 0:36
why javascript sort() puts 10 before 9. default sort compares strings, not numbers.
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– video by @keycat.dev.br
, 743 views, duration 0:36
javascript closure bug: var in a for loop with setTimeout. which line would you change?
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– video by @keycat.dev.br
, 621 views, duration 0:37
react quiz: what does count && <b>new</b> render when count is 0?
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– video by @keycat.dev.br
, 532 views, duration 0:38
react useState quiz: three setN(n + 1) calls in a row. what's n? comment before the…
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– video by @keycat.dev.br
, 423 views, duration 0:41
javascript event loop quiz: promise vs setTimeout. comment your answer before the reveal.
About @keycat.dev.br
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