Read/Write bytes of float in JS

Question

Is there any way I can read bytes of a float value in JS? What I need is to write a raw FLOAT or DOUBLE value into some binary format I need to make, so is there any way to

Answer 1

You can do it with typed arrays:

var buffer = new ArrayBuffer(4);
var intView = new Int32Array(buffer);
var floatView = new Float32Array(buffer);

floatView[0] = Math.PI
console.log(intView[0].toString(2)); //bits of the 32 bit float

Or another way:

var view = new DataView(new ArrayBuffer(4));
view.setFloat32(0, Math.PI);
console.log(view.getInt32(0).toString(2)); //bits of the 32 bit float

Not sure what browser support is like though