document.viewport.getScrollOffsets - Prototype JavaScript 框架

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getScrollOffsets
1.6.0

document.viewport.getScrollOffsets() -> [Number, Number] 或 { top: Number, left: Number }

返回当前窗口可视部分的水平和垂直滚动偏移值。

样例

document.viewport.getScrollOffsets(); 
//-> { left: 0, top: 0 } 

window.scrollTo(0, 120); 
document.viewport.getScrollOffsets(); 
//-> { left: 0, top: 120 }
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