兼容firefox，chrome的网页灰度效果

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兼容firefox，chrome的网页灰度效果_PHP

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Jun 01, 2016 pm 12:15 PM

Chrome

只是在技术上来看，要实现网页灰度，最稳妥的办法莫过于直接处理所有图像，不用考虑兼容，不用考虑效率。但是，工作量比较大，切换回来也费力。

ie系列支持css滤镜，一句 filter:gray; 就解决了所有问题。但是，众所周知，ie以效率低著名，你会发现开启以后速度显著下降。并且，最致命的，在其他浏览器下无效。

有没有兼容所有浏览器的办法呢？有。JavaScript能做到，早就有人用js模拟了ie的gray滤镜，如果你感兴趣并且愿意看英文，可以去看看《“GRAYSCALING” IN NON-IE BROWSERS》。如果你不愿意看，我可以直接告诉你怎么用。

1. 下载grayscale.js文件

2. 在你的header里引用这个js文件

3. 要实现全站灰度，在onload事件中调用

grayscale(document.body);

我的主题背景图片比较多，处理起来较吃力，可能出现部分图片消失的情况。。。

我会把这个效果开启三天，如果因为处理问题导致主题显示不正常影响了大家的浏览效果还请见谅。反正来这儿的都是熟人，要影响也就你们几个。。。

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