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# 1. Make sure you have nginx sub module compiled in | |
# nginx -V 2>&1 | grep --color=always '\-\-with\-http_sub_module' | |
# 2. add two directives below at HTTP level | |
# nginx.conf | |
http { | |
# ...... | |
sub_filter '</head>' '<style type="text/css">html{ filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); -webkit-filter: grayscale(100%); filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); /* Firefox 10+, Firefox on Android */ | |
} img { _filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=0); -webkit-filter: grayscale(100%); filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); /* Firefox 10+, Firefox on Android */ | |
} </style>'; | |
sub_filter_once on; | |
# ...... | |
} | |
# 3. nginx -t && /etc/init.d/nginx reload |
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让网页变灰,为雅安哀悼。程序员们可以修改Nginx的nginx.conf文件,用sub_filter指令使得每个页面都自动变灰,不用一页一页手工修改,如www.ucloud.cn。详细配置可参考@hydra35 写的 http://t.cn/zTiZkGw