A colleague of mine stumbled upon a method to floor float numbers using a bitwise or:  var a = 13.6 | 0; //a == 13   We were talking about it and wondering a few things.   How does it work? Our theory was that using such an operator casts the numbe...
var attr = ~'input,textarea'.indexOf( target.tagName.toLowerCase() )            ? 'value'            : 'innerHTML'   I saw it in an answer, and I've never seen it before.  What does it mean?...
x <<= y  (x = x << y) x >>= y  (x = x >> y) x >>>= y (x = x >>> y) x &= y   (x = x & y) x ^= y   (x = x ^ y) x |= y   (x = x | y)   What do these different operators do?...
It is possible to send and receive binary data over web sockets in Javascript? Could I, for example, implement an SSH client using web sockets?...
I've seen some performance critical javascript code, like the one on this project that makes extensive use of bitwise OR operations with 0. Ex:  GameBoyAdvanceCPU.prototype.write8 = function (address, data) { address = address | 0; data = data |...
How to set, clear, toggle and check a bit in JavaScript?...
I want to split a 64bit integer into two 32bit integers:  var bigInt = 0xffffff;  var highInt = bigInt >> 8 // get the high bits 0xfff var lowInt = bigInt // cut of the first part (with &)?  console.log(highInt); // 0xfff console.log(lowInt...
When I try to perform bitwise XOR operation in php and js, they are producing different results in some cases , for example  2166136261 ^ 101 = -2128831072 on browsers (js) 2166136261 ^ 101  = 2166136224(php)   My understanding is because php is runn...
I'm trying to write a function to return the number of bits a positive integer less that the Javascript limit of (2^53)-1 is. However im being hit by precision problems, and want to avoid big integer libraries.  Method 1:  function bitSize(num) {...
I can already convert 32bit integers into their rgba values like this:  pixelData[i] = {         red: pixelValue >> 24 & 0xFF,         green: pixelValue >> 16 & 0xFF,         blue: pixelValue >> 8 & 0xFF,         alpha:...

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