我们的志愿者还没有将这篇文章翻译为 中文 (简体)。加入我们帮助完成翻译！
Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Summary
Returns the distance in pixels from the top side of the current screen.
Syntax
iTop = window.screen.top
Specification
Not part of any current specification.