DataView.prototype.buffer

 buffer 属性描述了在构造时被 DataView 引用的 ArrayBuffer。

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dataview.buffer

buffer 属性是一个访问器(accessor)属性，它的 set 属性为 undefined，这意味着它是只读的。值在 DataView 被创建时就确定了，且不能改变。

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.buffer; // ArrayBuffer { byteLength: 8 }

• DataView
• ArrayBuffer