DataView.prototype.setFloat32() - JavaScript 编辑

The setFloat32() method stores a signed 32-bit float (float) value at the specified byte offset from the start of the DataView.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

dataview.setFloat32(byteOffset, value [, littleEndian])

Parameters

byteOffset

The offset, in byte, from the start of the view where to store the data.

value

The value to set.

littleEndian

Optional Indicates whether the 32-bit float is stored in little- or big-endian format. If false or undefined, a big-endian value is written.

Return value

undefined.

Errors thrown

RangeError

Thrown if the byteOffset is set such as it would store beyond the end of the view.

Examples

Using the setFloat32 method

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.setFloat32(1, 3);
dataview.getFloat32(1); // 3

Specifications

Specification
ECMAScript (ECMA-262) The definition of 'DataView.prototype.setFloat32' in that specification.

Browser compatibility

BCD tables only load in the browser

See also

• DataView
• ArrayBuffer