The Float64Array typed array represents an array of 64-bit floating point Numbers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0 unless initialization data is explicitly provided. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation)....array of 64-bit floating point numbers in the platform byte order...BYTES_PER_ELEMENT Returns a number value of the element size....