The getFloat32() method of DataView instances reads 4 bytes starting at the specified byte offset of this DataView and interprets them as a 32-bit floating point number. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.
Syntax
getFloat32(byteOffset)
getFloat32(byteOffset, littleEndian)
Parameters
byteOffset- : The offset, in bytes, from the start of the view to read the data from.
littleEndian- : Indicates whether the data is stored in little- or big-endian format. If
falseorundefined, a big-endian value is read.
- : Indicates whether the data is stored in little- or big-endian format. If
Return value
A floating point number from -3.4e38 to 3.4e38.
Exceptions
- RangeError
- : Thrown if the
byteOffsetis set such that it would read beyond the end of the view.
- : Thrown if the
Examples
Using getFloat32()
const { buffer } = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
const dataview = new DataView(buffer);
console.log(dataview.getFloat32(1)); // 2.387939260590663e-38