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第1508天 在TypeScript中interface与type有什么区别?
[3+1官网](http://www.h-camel.com/index.html)
[我也要出题](http://www.h-camel.com/contribution.html)
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Pls ignore, I already found another issue requesting it
### Prerequisites:
- Before requesting a device addition, please ensure there is not already a request for the device among the open issue…
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第575天 url链接中如果有两个问号会出现什么问题?如果通过js获取url的参数时能正常获取到吗?
[3+1官网](http://www.h-camel.com/index.html)
[我也要出题](http://www.h-camel.com/contribution.html)
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第163天 position跟margin collapse这些特性相互叠加后会怎么样?
#203,#1226
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https://brucephoebus.github.io/developer-note/#/%E7%9F%A5%E8%AF%86%E7%AC%94%E8%AE%B0/%E5%BC%80%E6%BA%90%E8%B4%A1%E7%8C%AE/%E5%85%A5%E9%97%A8/%E5%A6%82%E4%BD%95%E6%88%90%E4%B8%BA%E4%B8%80%E5%90%8D%E5%B…
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# CSS filter
> grayscale 灰阶
https://developer.mozilla.org/en-US/docs/Web/CSS/filter
```css
body{
-webkit-filter: grayscale(1);
filter: grayscale(1);
}
```
/* OR */
```css
bod…