Solving a Mystery Behavior of parseInt() in JavaScript

Posted byBramus! Leave a comment on Solving a Mystery Behavior of parseInt() in JavaScript

Dmitri Pavlutin digs into why parseInt(0.0000005); evaluates to 5:

parseInt(0.5);       // => 0
parseInt(0.05);      // => 0
parseInt(0.005);     // => 0
parseInt(0.0005);    // => 0
parseInt(0.00005);   // => 0
parseInt(0.000005);  // => 0
parseInt(0.0000005); // => 5 🤯

Solving a Mystery Behavior of parseInt() in JavaScript →

On a related note, Yannick Clybouw recently hit a similar quirk where his deploy onto GAE would fail because of a commit hash that looked a wee bit too much like a number:

Published by Bramus!

Bramus is a frontend web developer from Belgium, working as a Chrome Developer Relations Engineer at Google. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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