scroll-page-up 向上滚动一页
In native code applications, you can page up or down, but cannot scroll about freely.
在本机代码应用程序中,可以向上或向下翻页,但不能随便滚动。
Users may not scroll through lengthy pages. - In general, limit the length of a web page to two screens. - Split up long pages into several pages.
用户可能不会拖动滚动条,浏览整个页面,所以网页内容不能太多,如果网页太长,可以分成几张。
Users may not scroll through lengthy pages. - in general, limit the length of a web page to two screens. - Split up long pages into several pages.
用户可能不会拖动滚动条,浏览整个页面,所以网页内容不克不及太多,假如网页太长,可以分成几张。
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