js-bits

Tiny library for manipulating bits in JavaScript (Nodejs and broswer). Below is the example.js file:

var Bits= require('js-bits')
var mask= 0

Bits.set(mask, position)

mask= Bits.set(mask, 0)
console.log((mask).toString(2)) // 1
mask= Bits.set(mask, 3)
console.log((mask).toString(2)) // 1001

Bits.unset(mask, position)

mask= Bits.unset(mask, 3)
console.log((mask).toString(2)) // 1

Bits.get(mask, position)

console.log( Bits.get(mask, 3) ) // 0
console.log( Bits.get(mask, 0) ) // 1

Bits.toggle(mask, position)

mask= Bits.toggle(mask, 3)
console.log((mask).toString(2)) // 1001
mask= Bits.toggle(mask, 0)
console.log((mask).toString(2)) // 1000

Bits.setMany(mask, [position1, pos2, ...])

mask= Bits.setMany(mask, [0, 1, 2])
console.log((mask).toString(2)) // 1111

Bits.unsetMany(mask, [position1, pos2, ...])

mask= Bits.unsetMany(mask, [1, 2])
console.log((mask).toString(2)) // 1001

Bits.toArray(mask, arraySize)

var arr= Bits.toArray(mask, 4)
console.log( arr ) // [1, 0, 0, 1]

Bits.fromArray(array)

console.log( (Bits.fromArray(arr)).toString(2) ) // [1, 0, 0, 1]

Installation

npm install js-bits

Browser

<script src='js-bits.js'></script>
<script>
var mask= 0;
window.Bits.set(mask, 0);
</script>

MIT License (MIT)