jQuery / JS获取textarea的滚动条高度 [英] jQuery / JS get the scrollbar height of an textarea
问题描述
我有一个固定高度的textarea。当用户在文本区域中键入文本时,用户在其中键入一些文本后会显示滚动条。
I've got a textarea with a fixed height. When the user types text into the textarea a scrollbar will show up after the user typed some text in it.
如何使用jQuery或纯JavaScript获取滚动条高度?我已经搜索了好几个小时,但找不到任何东西。我不能只插入div并通过div偏移获得滚动条高度,因为textarea不允许有子元素。
How can I get the scrollbar height using jQuery or plain JavaScript? I've been searching for this for hours, but couldn't find anything. I can't just insert a div and get the scrollbar height via the div offset because a textarea is not allowed to have child elements.
请不要给我一个链接到完成工作的jQuery插件。我想学点东西。
Please don't give me a link to a jQuery Plug-In that does the job. I want to learn something.
推荐答案
textarea.scrollHeight
返回一个整数(像素)
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