DataView.prototype.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).

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

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 in little- or big-endian format. If false or undefined, a big-endian value is written.

undefined.

RangeError

如果byteOffset超出了视图能储存的值,就会抛出错误.

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

• DataView
• ArrayBuffer