dataView.setFloat32

dataView.setFloat32

setFloat32()从DataView起始位置以byte为计数的指定偏移量(byteOffset)处储存一个32-bit数(浮点型)。

语法

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

参数

byteOffset偏移量,从头开始计算,单位为字节.value设置的数值.littleEndian可选Indicates whether the 32-bit float is stored inlittle- or big-endianformat. If false or undefined, a big-endian value is written。

返回值

undefined.

抛出错误

RangeError如果byteOffset超出了视图能储存的值,就会抛出错误。

示例

使用setFloat32方法

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

规范

SpecificationStatusComment
Typed Array SpecificationObsoleteSuperseded by ECMAScript 2015.
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'DataView.prototype.setFloat32' in that specification.StandardInitial definition in an ECMA standard.
ECMAScript Latest Draft (ECMA-262)The definition of 'DataView.prototype.setFloat32' in that specification.Draft

浏览器兼容性

FeatureChromeEdgeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support9.0(Yes)15.0 (15.0)1012.15.1

FeatureAndroidChrome for AndroidEdgeFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Basic support4.0(Yes)(Yes)15.0 (15)?12.04.2