Comments on: Sine Scrollbars http://www.mrspeaker.net/2010/01/18/sine-scrollbars/ Javascript flâneur, internet flibbertygibbert Mon, 26 Jul 2010 16:33:56 +0000 http://wordpress.org/?v=2.9 hourly 1 By: Mr Speaker http://www.mrspeaker.net/2010/01/18/sine-scrollbars/comment-page-1/#comment-1655 Mr Speaker Fri, 22 Jan 2010 06:46:42 +0000 http://www.mrspeaker.net/?p=1441#comment-1655 That’s just a lil’ trick: the ~ is JavaScript’s bitwise NOT operator. Applying it twice (NOT NOT) is just a cheeky way of doing a Math.floor for positive numbers. But it’s waaaay faster than “Math.floor” (and just slightly faster than “<<0″) Though in this case, speed is not really an issue and I should have just done Math.floor for readability. Sorry 'bout that! That’s just a lil’ trick: the ~ is JavaScript’s bitwise NOT operator. Applying it twice (NOT NOT) is just a cheeky way of doing a Math.floor for positive numbers. But it’s waaaay faster than “Math.floor” (and just slightly faster than “<<0″)

Though in this case, speed is not really an issue and I should have just done Math.floor for readability. Sorry 'bout that!

]]> By: SAHarvey http://www.mrspeaker.net/2010/01/18/sine-scrollbars/comment-page-1/#comment-1654 SAHarvey Fri, 22 Jan 2010 06:32:16 +0000 http://www.mrspeaker.net/?p=1441#comment-1654 In your code I noticed you used a funtion name "~~()". Can you explain what this function does and if it is a part of the core Javascript language. Thanks In your code I noticed you used a funtion name “~~()”. Can you explain what this function does and if it is a part of the core Javascript language.

Thanks

]]> By: Simon Miller http://www.mrspeaker.net/2010/01/18/sine-scrollbars/comment-page-1/#comment-1647 Simon Miller Mon, 18 Jan 2010 09:27:46 +0000 http://www.mrspeaker.net/?p=1441#comment-1647 You clearly have too much time on your hands. Extremely cool. You clearly have too much time on your hands. Extremely cool.

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