{"id":1045,"date":"2010-08-19T21:22:37","date_gmt":"2010-08-19T13:22:37","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=1045"},"modified":"2018-01-01T19:13:30","modified_gmt":"2018-01-01T11:13:30","slug":"%e7%bf%bb%e8%af%91-%e4%b8%8d%e5%90%8ccss%e6%8a%80%e6%9c%af%e5%8f%8a%e5%85%b6css%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2010\/08\/%e7%bf%bb%e8%af%91-%e4%b8%8d%e5%90%8ccss%e6%8a%80%e6%9c%af%e5%8f%8a%e5%85%b6css%e6%80%a7%e8%83%bd\/","title":{"rendered":"\u7ffb\u8bd1-\u4e0d\u540cCSS\u6280\u672f\u53ca\u5176CSS\u6027\u80fd"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=1045<\/a><\/p>\n

\u539f\u4f5c\u8005\uff1aDave Gregory<\/a>
\u539f\u6587\u5730\u5740\uff1ahttp:\/\/screwlewse.com\/20…d-their-performance\/<\/a>
\u7ffb\u8bd1\uff1a\u5f20\u946b\u65ed<\/a><\/div>\n

\/\/zxx:\u4ee5\u4e0b\u975e\u7279\u522b\u6807\u6ce8\u7684\u5185\u5bb9\u5747\u6765\u81ea\u539f\u6587\uff0c\u4e0d\u4ee3\u8868\u4e2a\u4eba\u89c2\u70b9<\/span><\/p>\n

\u4e00\u3001\u4e3a\u4ec0\u4e48\u6211\u8981\u6d4b\u8bd5CSS\u7684\u6027\u80fd<\/h3>\n
\u8fd9\u662f\u80cc\u666f\uff1a<\/div>\n
\u6211\u662fOOCSS<\/a>(\u8bd1\u8005\u6ce8\uff1a\u9762\u5411\u5bf9\u8c61CSS<\/span>)\u7684\u5fe0\u5b9e\u7c89\u4e1d\u3002\u4f46\u662f\u6700\u8fd1\u5de5\u4f5c\uff0c\u6211\u4e00\u76f4\u4f7f\u7528Compass<\/a>,SASS<\/a>(\u8bd1\u8005\u6ce8\uff1aSASS\u4f7fCSS\u51fd\u6570\u5316\uff0c\u6709\u8bf8\u5982\u53d8\u91cf\uff0c\u5d4c\u5957\uff0c\u6df7\u5408\uff0c\u7ee7\u627f\u7b49\u7279\u6027\uff0c\u9700Ruby\u652f\u6301<\/span>).\u6211\u6709\u65f6\u5019\u611f\u89c9\u5230OOCSS\u548cSASS\u4f3c\u4e4e\u6709\u70b9\u53e4\u602a\u3002\u6211\u7684\u4e00\u4e2a\u670b\u53cb\u628a\u6211\u4ecb\u7ecd\u7ed9\u4e86Chris Eppstein<\/a>(Compass\u7684\u521b\u5efa\u8005)\uff0c\u6211\u4eec\u5c31SASS\u4e2d\u7684@extend<\/code>\u65b9\u6cd5\u8fdb\u884c\u4e86\u63a2\u8ba8\u3002\u6240\u4ee5\u6211\u51b3\u5b9a\u521b\u5efa\u4e00\u4e2aCSS\u6d4b\u8bd5\u9875\u9762\uff0c\u7528\u4e00\u79cd\u5f88\u539f\u751f\u6001\u7684\u65b9\u5f0f\u6765\u663e\u793a\u662f\u5426SASS\u7684@extend<\/code>\u65b9\u6cd5\u548cCSS\u7684OOCSS\u65b9\u6cd5\u4e4b\u95f4\u6709\u7740\u663e\u8457\u7684\u6027\u80fd\u5dee\u5f02\u3002<\/div>\n

\u8bd1\u8005\u8865\u5145<\/strong>\uff0c\u4e0b\u56fe\u4e3aSASS@extend<\/code>\u7ee7\u627f\u5b9e\u73b0\u7684\u793a\u4f8b\u622a\u56fe\uff1a
\"SASS<\/p>\n

\u5173\u4e8eOOCSS\uff0cNicole Sullivan\u6709\u4efd\u4e0d\u9519\u7684ppt\u6559\u6848\uff0c\u5177\u4f53\u89c1\u4e0b\u9762\uff1a<\/p>\n

Object Oriented CSS<\/a><\/strong><\/embed><\/object><\/p>\n
\u67e5\u770b\u66f4\u591aNicole Sullivan<\/a>\u7684presentations<\/a>.<\/div>\n<\/div>\n

\u672c\u60f3\u7ffb\u8bd1\u4e0b\u7684\uff0c\u7ed3\u679c\u6b64\u5e7b\u706f\u7247\u88ab\u4f5c\u8005\u8bbe\u7f6e\u4e3a\u4e0d\u80fd\u4e0b\u8f7d\uff0c\u8981\u662f\u81ea\u5df1\u7ffb\u8bd1\u5e76\u91cd\u65b0\u5236\u4f5c\u4efd\u5e7b\u706f\u7247\uff0c\u662f\u817e\u4e0d\u51fa\u90a3\u4e48\u591a\u65f6\u95f4\u7684\uff0c\u6240\u4ee5\u4f5c\u7f62\u3002\u5176\u6709\u4e24\u4e2a\u4e3b\u8981\u539f\u5219\uff1a<\/p>\n

* \u5206\u79bb\u7ed3\u6784\u548c\u76ae\u80a4
* \u5206\u79bb\u5bb9\u5668\u548c\u5185\u5bb9<\/div>\n

\u6b64\u539f\u5219\u591a\u5c11\u4e0e\u81ea\u5df1\u201cCSS\u6837\u5f0f\u5206\u79bb\u4e4b\u518d\u5206\u79bb<\/a>\u201d\u4e00\u6587\u4e2d\u63d0\u5230\u7684\u4e00\u4e9b\u601d\u60f3\u7c7b\u4f3c\u3002<\/p>\n

\u4e8c\u3001\u6d4b\u8bd5\u5982\u4f55\u5de5\u4f5c\u7684<\/h3>\n

\u6b64\u6d4b\u8bd5\u5236\u9020\u4e86\u5dee\u4e0d\u591a2000\u4e2abox\uff0c\u6240\u6709\u7684box\u90fd\u6709\u4e00\u4e2a\u72ec\u4e00\u65e0\u4e8c\u7684\u80cc\u666f\uff08\u6837\u5f0f\uff09\u3002\u6709\u51e0\u79cd\u683c\u5f0f\u7528\u6765\u6d4b\u8bd5\uff08\u89c1\u4e0b\u9762\u7684\u94fe\u63a5\uff09\uff0c\u4f60\u53ef\u4ee5\u9010\u4e2a\u66f4\u6539\u4ee5\u6d4b\u8bd5\u5668\u901f\u5ea6\u7684\u5dee\u5f02\u3002\u53ea\u8981\u6839\u636e\u60a8\u7684\u610f\u613f\u70b9\u51fb\u76f8\u5e94\u7684\u94fe\u63a5\u3002<\/p>\n

\u6b64\u6d4b\u8bd5\u7528\u4e86\u4e00\u5c0f\u6bb5\u811a\u672c\uff0c\u6b64\u6bb5\u811a\u672c\u6765\u81eaSteve Souder\u7684\u535a\u6587\uff1aPerformance Impact of CSS Selectors<\/a>(CSS\u9009\u62e9\u5668\u7684\u6027\u80fd\u5f71\u54cd)<\/p>\n

Steve\u7684\u6587\u7ae0\u53ef\u4ee5\u8bf4\u662f\u8fdb\u5165\u4e86CSS\u9009\u62e9\u5668\u6027\u80fd\u66f4\u7ec6\u81f4\u7684\u4e00\u4e2a\u5883\u754c\uff0c\u975e\u5e38\u503c\u5f97\u9605\u8bfb\u3002<\/p>\n

\u4e09\u3001CSS\u683c\u5f0f<\/h3>\n

1. OOCSS<\/strong> (\u4f3c\u4e4e\u633a\u5feb\u7684)\uff0c\u53ccclass\uff0c\u5982\uff1aclass=\"box box-#\"<\/code>\uff0c\u57fa\u672c\u7684CSS\u6837\u5f0f\u5728class box\u4e2d\uff0c\u7136\u540e\u76f4\u6dfb\u52a0\u80cc\u666f\u6837\u5f0f\u5728\u552f\u4e00\u7684class\u4e2d\u3002<\/p>\n

2. Sass @extend<\/strong> (\u901f\u5ea6\u4e0d\u786e\u5b9a)\uff0c\u4e00\u4e2aclass\uff0c\u5982class=\"box-3\"<\/code>\uff0c\u7136\u540e\u5728\u57fa\u672c\u89c4\u5219\u4e0a\u521b\u5efa\u4e00\u4e2a\u591a\u9009\u62e9\u5668\u89c4\u5219\uff0c\u5982.box-1, .box-2 {generics}<\/code>\u3002<\/p>\n

3. \u56a3\u5f20\u7684CSS<\/strong> \u6dfb\u52a0\u6240\u6709\u7684\u57fa\u672cCSS\u5230\u4e00\u4e2a\u552f\u4e00\u7684class\u4e0a\uff0c\u6ca1\u6709\u201c\u7626\u8eab\u201d\u3002<\/p>\n

4. \u4f7f\u7528ID\u9009\u62e9\u5668<\/strong> \u867d\u7136\u6211\u4e0d\u5efa\u8bae\u4f7f\u7528ID\uff0c\u4f46\u662f\u7528\u6765\u6d4b\u8bd5\u8fd8\u662f\u503c\u5f97\u4e00\u8bd5\u7684\u3002<\/p>\n

5. \u6ca1\u6709CSS<\/strong> \u5f88\u597d\u7684\u5e95\u7ebf\u6d4b\u8bd5<\/p>\n

\u4ee3\u7801\u793a\u4f8b\uff1f<\/p>\n

OOCSS\u6837\u5f0f:<\/strong>\u4e00\u4e2a\u4e3bclass\uff0c\u5305\u542b\u6240\u6709\u7684\u5171\u540c\u89c4\u5219\uff0c\u7136\u540e\u4e00\u4e2a\u72ec\u7279\u7684\u89c4\u5219\u4f7f\u7528\u5176\u4ed6class<\/p>\n

\n
.box {padding:25px;border:1px solid #000;border-radius:5px;}\n.box-1 {background-color:#FFEE00;}\n.box-2 {background-color:#00FFee;}\n
...<\/div>\n<\/pre>\n<\/div>\n
@extend\u6837\u5f0f:<\/strong>\u5c06\u6240\u6709\u7684\u72ec\u7279class\u5f52\u4e3a\u4e00\u4e2a\uff0c\u9017\u53f7\u5206\u9694\u7684\u4f7f\u7528\u516c\u7528\u5c5e\u6027\u7684class\u5217\u8868\u3002<\/p>\n
\n
.box-1,.box-2 {padding:25px;border:1px solid #000;border-radius:5px;}\n.box-1 {background-color:#FFEE00;}\n.box-2 {background-color:#00FFEE;}\n
...<\/div>\n<\/pre>\n<\/div>\n
\u957f(\u80bf\u80c0)\u6837\u5f0f\uff1a<\/strong>\u6240\u6709\u7684\u516c\u5171\u6837\u5f0f\u90fd\u5206\u79bb\u5230\u72ec\u4e00\u65e0\u4e8c\u7684class\u4e2d\u3002<\/p>\n
\n
.box-1 {\n  padding:25px;\n  border:1px solid #000;\n  border-radius:5px;\n  background-color:FFEE00;}\n.box-2 {\n  padding:25px;\n  border:1px solid #000;\n  border-radius:5px;\n  background-color:00FFEE;}\n
...<\/div>\n<\/pre>\n<\/div>\n
\u65e0CSS\uff1a<\/strong>\u6709\u70b9\u513f\u81ea\u6211\u89e3\u91ca<\/p>\n
\u56db\u3001\u6d4b\u8bd5\u7ed3\u679c<\/h3>\n
\u6d4b\u8bd5\u7ed3\u679c\u8c8c\u4f3c\u633a\u6709\u8da3\u7684\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u4e00\u4e9b\u56fe\u8868\u597d\u5417\uff1f<\/p>\n
\"opera\u6d4f\u89c8\u5668\u4e0b\u6d4b\u8bd5\u7ed3\u679c<\/p>\n
\"firefox\u6d4f\u89c8\u5668\u4e0b\u6d4b\u8bd5\u7ed3\u679c<\/p>\n
\"Chrome6\u6d4f\u89c8\u5668\u4e0b\u6d4b\u8bd5\u7ed3\u679c<\/p>\n
\"Safari\u6d4f\u89c8\u5668\u4e0b\u6d4b\u8bd5\u7ed3\u679c<\/p>\n
\u6240\u4ee5\u8ba9\u6211\u4eec\u5148\u8ba8\u8bba\u4e0bCSS\u6027\u80fd\uff0c\u8fd9\u91cc\u6709\u4e9b\u6211\u53d1\u73b0\u7684\u4e1c\u4e1c\uff1a<\/p>\n