TE
TechEcho
Home24h TopNewestBestAskShowJobs
GitHubTwitter
Home

TechEcho

A tech news platform built with Next.js, providing global tech news and discussions.

GitHubTwitter

Home

HomeNewestBestAskShowJobs

Resources

HackerNews APIOriginal HackerNewsNext.js

© 2025 TechEcho. All rights reserved.

Show HN: Speedsums

16 pointsby refrigeratorover 2 years ago

3 comments

Raed667over 2 years ago
Looks fun! I made a small JavasScript snippet to solve it by pressing &quot;Enter&quot; at whatever speed you want ;)<p><pre><code> const observer = new MutationObserver(() =&gt; { document.querySelector(&quot;#answer&quot;).value = eval(document.querySelector(&quot;#question&quot;).innerText.replace(&quot;=&quot;,&quot;&quot;).replace (&#x27;x&#x27;,&quot;*&quot;).replace(&quot;÷&quot;,&quot;&#x2F;&quot;)); }); observer.observe(document.querySelector(&quot;#question&quot;), { attributes: true, childList: true, subtree: true }); </code></pre> &gt; You beat 100% of people.<p>&gt; Time per question: 0.25s<p>¯\_(ツ)_&#x2F;¯
ColinWrightover 2 years ago
Hmm.<p><pre><code> Total: 21 You beat 70.22% of people. Time per question: 1.43s Your slowest question was 20 ÷ 2 = 10, which took you 2.24s. Try to be faster next time!</code></pre>
tmtvlover 2 years ago
Hang on, those aren&#x27;t only sums. Got 22 correct, which I guess may be fine for a tired Tuesday evening.