CSS 有哪些暖心却鲜为人知的属性?
css3
user-modify
css版的contenteditable使用方法:user-modify: read-only;
user-modify: read-write;
user-modify: write-only;
user-modify: read-write-plaintext-only;
其中read-only为默认值,write-only是来搞笑的,read-write和contenteditable="true"效果一致,read-write-plaintext-only和contenteditable="plaintext-only"效果一致(没错这属性还有这个值但是还是草案中)。至于兼容性么,就跟这玩意儿为人所知的程度一样,贫乏得可怜,目前IE浏览器不明,FF只支持前三个属性,Chrome高版本可以全部支持,但是全都要加上私有前缀。适用场景的话,大概就是contenteditable的css版,想要做高度自适应的文本编辑框,又不想在粘贴复制的时候把html给复制进去。生产环境还是老老实实用js来搞吧。
pointer-event
最常用的属性:pointer-event: none;
这个属性的作用就是把元素变成“幻影”(逼格很高有没有),看得见却摸不着。这属性曾经火过一阵,起因是国外某推主说在页面滚动时给body加上这个属性能够禁用hover从而有效提高FPS,还给出了相关测试数据。但是在各位网友的质疑和测试下发现实际效果不如数据展示的那么美好,一是各家浏览器都有针对滚动时指针hover的优化,二是这个属性会导致页面无法响应触屏,后来就不了了之了。现在还在使用的场景大概只剩下通过pointer-event:none加上去除href属性来360度无死角的禁用a标签这一项了吧。
原文链接:https://www.zhihu.com/question/39817183/answer/83264065
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