javascript 如何让 textarea 填充其父宽度的宽度？
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How to make textarea fill the width of its parent width?
提问by johnjohn
Given that we don't know the div's width beforehand?
鉴于我们事先不知道 div 的宽度？
My idea: Calculate the div 's width with JS, find a way to convert it to cols and the apply the css to the textarea onthe fly. But perhaps there 's no need to reinvent the wheel?
我的想法：使用 JS 计算 div 的宽度，找到一种方法将其转换为 cols 并将 css 即时应用于 textarea。但也许没有必要重新发明轮子？
Thank you.
谢谢你。
回答by Krevan
<textarea style="width:100%">* will work in most cases.
<textarea style="width:100%">* 将在大多数情况下工作。
If it doesn't, please provide more information!
如果没有，请提供更多信息！
* Note: for some reason, it will need the colsand rowsattributes to validate. But setting a width or a height will override them, so put any value you want.
* 注意：由于某种原因，它需要cols和rows属性来验证。但是设置宽度或高度会覆盖它们，所以输入任何你想要的值。
