{"id":739,"date":"2010-04-09T10:48:29","date_gmt":"2010-04-09T02:48:29","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=739"},"modified":"2018-01-01T15:46:12","modified_gmt":"2018-01-01T07:46:12","slug":"css-content%e5%86%85%e5%ae%b9%e7%94%9f%e6%88%90%e6%8a%80%e6%9c%af%e4%bb%a5%e5%8f%8a%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2010\/04\/css-content%e5%86%85%e5%ae%b9%e7%94%9f%e6%88%90%e6%8a%80%e6%9c%af%e4%bb%a5%e5%8f%8a%e5%ba%94%e7%94%a8\/","title":{"rendered":"CSS content\u5185\u5bb9\u751f\u6210\u6280\u672f\u4ee5\u53ca\u5e94\u7528"},"content":{"rendered":"<p>by <a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a><br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=739\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=739<\/a><\/p>\n<h3>\u4e00\u3001\u54d7\u5566\u54d7\u5566\u7684\u7b80\u4ecb<\/h3>\n<p><span class=\"s\">zxx:\/\/\u8fd9\u91cc\u201c\u54d7\u5566\u54d7\u5566\u201d\u7684\u4f5c\u7528\u662f\u4e3a\u4e86\u6e32\u67d3\u4e00\u79cd\u6c1b\u56f4\u3002<\/span><br \/>content\u5c5e\u6027\u65e9\u5728CSS2.1\u7684\u65f6\u5019\u5c31\u88ab\u5f15\u5165\u4e86\uff0c\u53ef\u4ee5\u4f7f\u7528<code>:before<\/code>\u4ee5\u53ca<code>:after<\/code>\u4f2a\u5143\u7d20\u751f\u6210\u5185\u5bb9\u3002\u6b64\u7279\u6027\u76ee\u524d\u5df2\u88ab\u5927\u90e8\u5206\u7684\u6d4f\u89c8\u5668\u652f\u6301\uff1a(Firefox 1.5+, Safari 3.5+, IE 8+, Opera 9.2+, Chrome 0.2+)\u3002\u53e6\u5916\uff0c\u76ee\u524dOpera 9.5+ \u548c Safari 4\u5df2\u7ecf\u652f\u6301\u6240\u6709\u5143\u7d20\u7684<code>content<\/code>\u5c5e\u6027\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f<code>:before<\/code>\u548c<code>:after<\/code>\u4f2a\u5143\u7d20\u3002<\/p>\n<p>\u5728<a target=\"_blank\" href=\"http:\/\/www.w3.org\/TR\/css3-content\/\"><cite>CSS 3 Generated Content\u5de5\u4f5c\u8349\u6848<\/cite><\/a>\u4e2d\uff0ccontent\u5c5e\u6027\u6dfb\u52a0\u4e86\u66f4\u591a\u7684\u7279\u5f81\uff0c\u4f8b\u5982\uff1a\u63d2\u5165\u4ee5\u53ca\u79fb\u9664\u6587\u6863\u5185\u5bb9\u7684\u80fd\u529b\uff0c\u4ee5\u521b\u5efa\u811a\u6ce8\uff0c\u7ed3\u8bed\uff0c\u53ca\u6bb5\u843d\u6ce8\u91ca\u3002\u4f46\u662f\u76ee\u524d\u8fd8\u6ca1\u6709\u6d4f\u89c8\u5668\u652f\u6301content\u7684\u6269\u5c55\u529f\u80fd\u3002<\/p>\n<p>\u672c\u6587\u5c06\u5c55\u793acontent\u5185\u5bb9\u751f\u6210\u7684\u57fa\u672c\u4f7f\u7528\uff0c\u4ee5\u53ca\u4e00\u4e9b\u60a8\u53ef\u4ee5\u5e94\u7528\u7684\u7279\u522b\u7684\u6280\u672f\u3002<\/p>\n<h3>\u4e8c\u3001\u8fd8\u6709\u4e00\u70b9\u5c0f\u5c0f\u7684\u63d0\u9192<\/h3>\n<p>\u5728\u8fdb\u5165\u6b63\u9898\u4e4b\u524d\uff0c\u6211\u8981\u505a\u4e00\u56de\u5570\u55e6\u7684\u8001\u5973\u4eba\uff0c\u8bb2\u70b9\u53ef\u6709\u53ef\u65e0\u65e0\u4f24\u5927\u96c5\u7684\u63d0\u9192\u3002<\/p>\n<ul>\n<li>\u4ec5\u5728CSS\u53ef\u7528\u7684\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0b\u8d77\u4f5c\u7528\u3002<\/li>\n<li>\u4e0d\u53ef\u901a\u8fc7DOM\u4f7f\u7528\uff0c\u5b83\u53ea\u662f\u7eaf\u7cb9\u7684\u8868\u8c61\u3002\u5728\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u4ece\u4e00\u4e2a\u8bbf\u95ee\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5f53\u524d\u5c4f\u5e55\u9605\u8bfb\u4e0d\u652f\u6301\u751f\u6210\u7684\u5185\u5bb9\u3002<\/li>\n<\/ul>\n<h3>\u4e09\u3001\u6700\u57fa\u672c\u7684 &#8211; \u751f\u6210\u5185\u5bb9<\/h3>\n<p>content\u4f7f\u7528\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>\nh2:before {\n   content: \"\u6211\u662f\u989d\u5916\u6587\u5b57\uff01\";\n}\n<\/pre>\n<\/div>\n<p>\u6b64\u6bb5\u6837\u5f0f\u7684\u4f5c\u7528\u662f\u5728\u6bcf\u4e2ah2\u6807\u7b7e\u7684\u524d\u9762\u6dfb\u52a0\u6587\u5b57\u201c\u6211\u662f\u989d\u5916\u6587\u5b57\u201d\u3002<br \/>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201004\/css-content-basice.html\">content\u6700\u57fa\u672c\u4f7f\u7528Demo<\/a><\/p>\n<p>content\u5c5e\u6027\u7684\u503c\u9664\u4e86\u4f7f\u7528\u6587\u672c\u503c\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6807\u7b7e\u7684\u4e00\u4e9b\u5c5e\u6027\u503c\uff0c\u65b9\u6cd5\u662fattr()\uff0c\u53c2\u89c1\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>\na.content:after {\n   content: attr(href);\n}\n\n&lt;a class=\"content\" href=\"http:\/\/www.zhangxinxu.com\/\">\u6b64\u6807\u7b7e\u7684href\u503c\u662f\uff1a&lt;\/a>\n<\/pre>\n<\/div>\n<p>\u7ed3\u679c\u5982\u4e0b\u622a\u56fe\uff08\u622a\u81eaFirefox3.6\uff09\uff1a<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201004\/2010-04-08_162407.png\" width=\"385\" height=\"97\" title=\"\u5229\u7528\u6807\u7b7e\u5c5e\u6027\u503c\u751f\u6210content\u5185\u5bb9 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" alt=\"\u5229\u7528\u6807\u7b7e\u5c5e\u6027\u503c\u751f\u6210content\u5185\u5bb9 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" \/><\/div>\n<p>\u5bf9\u5e94a\u6807\u7b7e\u5185\u7684\u6587\u5b57\u503c\u7684\u6700\u540e\u6dfb\u52a0\u4e86\u6b64\u6807\u7b7e\u7684href\u5c5e\u6027\u7684\u503c\u3002<br \/>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201004\/css-content-basics-attr.html\" title=\"\u5229\u7528\u6807\u7b7e\u5c5e\u6027\u503c\u751f\u6210content\u5185\u5bb9demo\">\u6807\u7b7e\u5c5e\u6027\u503c\u751f\u6210content\u5185\u5bb9Demo<\/a><\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u5f53\u4f7f\u7528attr()\u83b7\u53d6\u6807\u7b7e\u5c5e\u6027\u540d\u7684\u65f6\u5019\uff0c\u5343\u4e07\u4e0d\u8981\u6dfb\u52a0\u5f15\u53f7!<\/p>\n<p>\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8ba1\u6570\u5668\u4ea7\u751f\u52a8\u6001\u6570\u5b57\u6216\u8fd0\u7528url(\/path\/to\/file)\u8def\u5f84\u63d2\u5165\u56fe\u7247\u3002\u8981\u60f3\u83b7\u5f97\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u7ee7\u7eed\u770b\u4e0b\u9762\u7684\u5e94\u7528\u5b9e\u4f8b\u3002<\/p>\n<h3>\u56db\u3001\u4f7f\u7528\u8ba1\u6570\u5668\u521b\u5efa\u53f7\u7801\u5185\u5bb9<\/h3>\n<p>\u5982\u679c\u60a8\u60f3\u63d2\u5165\u4e00\u7cfb\u5217\u9012\u589e\u7684\u503c\uff0c\u6bd4\u5982\u8bf4\u201c\u7f8e\u59731\uff0c\u7f8e\u59732\uff0c\u7f8e\u59733\uff0c\u7f8e\u59734\u2026\u2026\u201d\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528\u8ba1\u6570\u5668\u5728\u6bcf\u4e2a\u5217\u8868\u9879\u7684\u524d\u9762\u63d2\u5165\u9012\u589e\u7684\u5e8f\u53f7\u503c\u3002CSS\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>\nol {\n   list-style-type:none;\t\t\n   counter-reset:sectioncounter;\n}                      \n\nol li:before {\n   content:\"\u7f8e\u5973\" counter(sectioncounter) \"\uff1a \"; \n   counter-increment:sectioncounter;\n}\n<\/pre>\n<\/div>\n<p>HTML\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre name=\"code\" class=\"html\">\n&lt;ol>\n    &lt;li>&lt;img src=\"mm1.jpg\" width=\"128\" height=\"96\" \/>&lt;\/li>\n    &lt;li>&lt;img src=\"mm3.jpg\" width=\"128\" height=\"96\" \/>&lt;\/li>\n&lt;\/ol><\/pre>\n<\/div>\n<p>\u7ed3\u679c\u5982\u4e0b\u56fe\uff08Firefox3.6\u4e0b\u622a\u56fe\uff09\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201801\/2018-01-01_154051.png\" width=\"296\" height=\"327\" alt=\"\u5229\u7528content\u8ba1\u6570\u5668\u751f\u6210\u9012\u589e\u5e8f\u53f7\" class=\"alignnone\" \/><\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201004\/css-content-number.html\">content\u4ea7\u751f\u9012\u589e\u5e8f\u53f7demo<\/a><\/p>\n<p><strong>\u8bf4\u660e\uff1a<\/strong><\/p>\n<ol>\n<li><code>&lt;ol&gt;<\/code>\u6807\u7b7e\u5e94\u7528<code>counter-reset<\/code>\u5c5e\u6027\uff0c<code>&lt;li&gt;<\/code>\u6807\u7b7e\u5e94\u7528<code>counter-increment<\/code>\u5c5e\u6027\uff0c\u503c\u5747\u4e3a<code>sectioncounter<\/code>\uff0c\u518d\u914d\u5408<code>content<\/code>\u5c5e\u6027\uff0c\u4ee5\u53ca<code>counter<\/code>\u8ba1\u6570\u5668\u5c31\u53ef\u4ee5\u5b9e\u73b0\u9012\u589e\u7684\u6548\u679c\u4e86\u3002<\/li>\n<li>\u5982\u679c\u60a8\u6307\u5b9a\u4e86\u5143\u7d20<code>display:none<\/code>\uff0c\u5219<code>content<\/code>\u4e0b\u7684\u8ba1\u6570\u5668\u4e0d\u4f1a\u4ea7\u751f\u9012\u589e\u503c\u3002<\/li>\n<li>\u5f53\u7136\uff0c\u5982\u679c\u6d4f\u89c8\u5668\u4e0d\u652f\u6301\u6b64\u65b9\u6cd5\uff0c\u90a3\u4e48\u5c31\u4e0d\u4f1a\u6709\u6570\u5b57\u51fa\u73b0\uff0c\u60a8\u4f7f\u7528firebug\u6216\u662f\u4e4b\u7c7b\u7684\u5de5\u5177\u67e5\u770b\u771f\u5b9e\u7684HTML\u65f6\u4e0d\u4f1a\u770b\u5230\u4ea7\u751f\u7684\u6570\u503c\uff0c\u4e0d\u8981\u6709\u7591\u60d1\uff0c<code>content<\/code>\u5c5e\u6027\u52a8\u6001\u751f\u6210\u7684\u5185\u5bb9\u662f\u7eaf\u7cb9\u7684\u88c5\u9970\u800c\u5df2\uff0c\u865a\u5047\u7684\u8868\u8c61\u3002<\/li>\n<li> \u5982\u679c\u60a8\u5bf9CSS\u8ba1\u6570\u5668\u611f\u5174\u8da3\uff0c\u60f3\u6df1\u5165\u4e86\u89e3\uff0c\u53ef\u4ee5\u53c2\u89c1David Storey\u4e00\u7bc7\u4f18\u79c0\u7684\u6587\u7ae0\uff1a<a target=\"_blank\" href=\"http:\/\/dev.opera.com\/articles\/view\/automatic-numbering-with-css-counters\/\"><cite>Automatic numbering with CSS Counters<\/cite><\/a>\u3002<\/li>\n<\/ol>\n<h3>\u4e94\u3001\u4e3a\u591a\u8bed\u8a00\u5185\u5bb9\u63d2\u5165\u6b63\u786e\u7684\u5f15\u53f7<\/h3>\n<p>\u4e0d\u540c\u7684\u8bed\u8a00\u4f7f\u7528\u4e0d\u540c\u7684\u5f15\u53f7\u5b57\u7b26\u3002\u6bd4\u5982\u82f1\u6587\u7684\u5f15\u53f7\u5c31\u662f<code>\"\"<\/code>\uff0c\u800c\u4e2d\u6587\u5f15\u53f7\u5c31\u662f<code>\u201c\u201d<\/code>\u3002\u4f7f\u7528content\u53ef\u4ee5\u4f7f\u5f97\u4e0d\u540c\u7684\u8bed\u8a00\u4f7f\u7528\u5bf9\u5e94\u7684\u4e00\u4e9b\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u4e0b\u9762\u7684\u4e9b\u6587\u5b57\u6dfb\u52a0\u5176\u5bf9\u5e94\u8bed\u8a00\u7684\u5f15\u53f7\uff0c\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;p lang=\"en\">&lt;q>It\u2019s only work if somebody makes you do it.&lt;\/q>&lt;\/p>\n&lt;p lang=\"no\">&lt;q>Hvis du forteller meg nok en vits, s\u00e5 skal jeg sl\u00e5 deg til jorden.&lt;\/q>&lt;\/p>\n&lt;p lang=\"ch\">&lt;q>\u6b22\u8fce\u6765\u5230\u4e0a\u6d77\uff0c\u6b22\u8fce\u53c2\u89c2\u4e16\u535a\u4f1a\uff01&lt;\/q>&lt;\/p>\n<\/pre>\n<\/div>\n<p>\u6211\u4eec\u4e0d\u59a8\u8bd5\u8bd5\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>\/* \u4e3a\u4e0d\u540c\u8bed\u8a00\u6307\u5b9a\u5f15\u53f7\u7684\u8868\u73b0 *\/\n:lang(en) > q {quotes:'\"' '\"';}\n:lang(no) > q {quotes:\"\u00ab\" \"\u00bb\";}\n:lang(ch) > q {quotes:\"\u201c\" \"\u201d\";}\n\n\/* \u5728q\u6807\u7b7e\u7684\u524d\u540e\u63d2\u5165\u5f15\u53f7 *\/\nq:before {content:open-quote;}\nq:after  {content:close-quote;}<\/pre>\n<\/div>\n<p>\u7ed3\u679c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201004\/2010-04-09_091948.png\" width=\"476\" height=\"155\" title=\"CSS content\u4e3a\u591a\u8bed\u8a00\u5185\u5bb9\u63d2\u5165\u5bf9\u5e94\u5b57\u7b26 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" alt=\"CSS content\u4e3a\u591a\u8bed\u8a00\u5185\u5bb9\u63d2\u5165\u5bf9\u5e94\u5b57\u7b26 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" \/><\/div>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201004\/css-content-language-quot.html\">content\u751f\u6210\u5bf9\u5e94\u8bed\u8a00\u5b57\u7b26demo<\/a><\/p>\n<p>\u6b64\u6280\u672f\u53ef\u4ee5\u5e94\u7528\u4e8e\u5404\u7c7b\u5143\u7d20\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662fq\u6807\u7b7e\uff0c\u53e6\u5916\uff0cSafari 3\u4ee5\u53caIE7\uff08\u4ee5\u53ca\u4ee5\u4e0b\uff09\u662f\u4e0d\u652f\u6301\u6b64\u6280\u672f\u7684\u3002<\/p>\n<h3>\u516d\u3001\u7528\u56fe\u7247\u66ff\u6362\u6587\u5b57<\/h3>\n<p>\u5173\u4e8e\u56fe\u7247\u66ff\u6362\u6280\u672f\uff0c\u60a8\u53ef\u4ee5\u53c2\u89c1\u8fd9\u91cc\uff1a<a target=\"_blank\" href=\"http:\/\/www.mezzoblue.com\/tests\/revised-image-replacement\/\">several image replacement techniques<\/a>\uff0c\u91cc\u9762\u63d0\u4f9b\u4e86\u51e0\u79cd\u65b9\u6cd5\u3002\u800c\u8fd9\u91cc\u5c55\u793a\u7684\u5219\u662f\u53e6\u5916\u4e0d\u540c\u7684\u7528\u56fe\u7247\u66ff\u6362\u65b9\u6cd5\uff0c\u4f7f\u7528\u7684\u662fcontent\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u53c2\u89c1\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>div.logo {\n   content:url(logo.png);\n}<\/pre>\n<\/div>\n<p>\u8fd9\u79cd\u56fe\u7247\u66ff\u6362\u6280\u672f\u7684\u4f18\u70b9\u5728\u4e8e\u6587\u5b57\u5185\u5bb9\u786e\u5b9e\u88ab\u66ff\u6362\u4e86\u3002\u56e0\u6b64\uff0c\u60a8\u6ca1\u6709\u5fc5\u8981\u8bbe\u5b9a\u9ad8\u5bbd\u4e3a\u56fe\u7247\u7684\u663e\u793a\u521b\u9020\u7a7a\u95f4\uff0c\u6216\u662f\u4f7f\u7528text-indent\u6216\u662fpadding\u9690\u85cf\u6700\u521d\u7684\u6587\u5b57\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5c31\u76ee\u524d\u800c\u8a00\uff0c\u8fd8\u662f\u6709\u4e0d\u5c11\u9700\u8981\u6ce8\u610f\u7684\uff1a<br \/>1. \u4f60\u4e0d\u80fd\u5bf9\u56fe\u7247\u8fdb\u884c\u91cd\u590d\u6216\u5e73\u94fa\uff0c\u6216\u662f\u4f7f\u7528image sprite\u3002<br \/>2. \u76ee\u524d\u4ec5\u5728Opera 9.5+ \u548c Safari 4+\u6d4f\u89c8\u5668\u4e0b\u8d77\u4f5c\u7528\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u6d4f\u89c8\u5668\u652f\u6301\u6240\u6709\u5143\u7d20\u7684content\u65b9\u6cd5\uff0c\u800c\u4e0d\u4ec5\u4ec5\u5c40\u9650\u4e8e:after\u6216\u662f:before\u3002<br \/>\u66ff\u6362\u7684\u56fe\u7247\u65e0\u6cd5\u5e94\u7528alt\u5c5e\u6027\uff0c\u6240\u4ee5\u4e00\u4e9b\u7279\u6b8a\u7684\u4f7f\u7528\u5c4f\u5e55\u9605\u8bfb\u5668\u7684\u7528\u6237\u53ef\u80fd\u65e0\u6cd5\u7406\u89e3\u60a8\u66ff\u6362\u7684\u56fe\u7247\u7684\u542b\u4e49\u3002<\/p>\n<h3>\u4e03\u3001\u663e\u793a\u76f8\u5bf9\u5e94\u7684\u94fe\u63a5\u56fe\u6807<\/h3>\n<p>\u6307\u7684\u662f\u9488\u5bf9\u4e0d\u540c\u7684\u94fe\u63a5\u7c7b\u578b\uff0c\u5728\u94fe\u63a5\u7684\u540e\u9762\u663e\u793a\u5bf9\u5e94\u94fe\u63a5\u7c7b\u578b\u7684\u56fe\u6807\uff0c\u4f8b\u5982\uff0c\u94fe\u63a5\u7684\u5bf9\u8c61\u662f\u4e00\u4e2a\u56fe\u7247\uff0c\u5219\u663e\u793a\u56fe\u7247\u7684\u5c0f\u56fe\u6807\uff0c\u5982\u679c\u94fe\u63a5\u5bf9\u8c61\u662f\u89c6\u9891\uff0c\u5219\u663e\u793a\u89c6\u9891\u5c0f\u56fe\u6807\uff0c\u5982\u679c\u94fe\u63a5\u5c31\u662f\u4e2aURL\u7f51\u9875\u94fe\u63a5\uff0c\u5219\u663e\u793a\u94fe\u63a5\u7684\u5c0f\u56fe\u6807\u3002\u60a8\u53ef\u4ee5\u53c2\u89c1\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n<div>CSS\u4ee3\u7801\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>p a[href $=\".pdf\"]:after {\n    content:url(..\/image\/icon_pdf.png);\n}\np a[rel = \"external\"]:after {\n    content:url(..\/image\/icon_link.png);\n}<\/pre>\n<\/div>\n<\/div>\n<div class=\"mt10\">\nHTML\u4ee3\u7801\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;p>\u60a8\u53ef\u4ee5\u67e5\u770b\u6b64PDF\u6587\u4ef6\uff1a&lt;a href=\"\/sample.pdf\">web\u7ad9\u70b9\u7684\u6027\u80fd\u4f18\u5316.pdf&lt;\/a>\uff0c\u6216\u662f\u5728\u7ebf\u67e5\u770b\uff0c&lt;a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/\" rel=\"external\">\u70b9\u51fb\u8fd9\u91cc&lt;\/a>\u3002&lt;\/p><\/pre>\n<\/div>\n<\/div>\n<p>\u7ed3\u679c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201004\/2010-04-09_100253.png\" width=\"421\" height=\"107\" title=\"CSS content \u663e\u793a\u76f8\u5bf9\u5e94\u7684\u94fe\u63a5\u56fe\u6807 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" alt=\"CSS content \u663e\u793a\u76f8\u5bf9\u5e94\u7684\u94fe\u63a5\u56fe\u6807 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" \/><\/div>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"http:\/\/www.zhangxinxu.com\/study\/201004\/css-content-link-image.html\">CSS content\u663e\u793a\u94fe\u63a5\u56fe\u6807demo<\/a><\/p>\n<h3>\u516b\u3001\u4f7f\u7528\u5c5e\u6027\u503c\u4f5c\u4e3acontent\u5185\u5bb9<\/h3>\n<p>\u4f7f\u7528\u5c5e\u6027\u503c\u5f53\u4f5c<code>content<\/code>\u5185\u5bb9\u6307\u7684\u662f\u5c06\u6807\u7b7e\u7684<code>title<\/code>, <code>src<\/code>, <code>href<\/code>, <code>alt<\/code>\u7b49\u503c\u5f53\u4f5c\u5185\u5bb9\u663e\u793a\u5728\u6807\u7b7e\u7684\u5185\u90e8\uff0c\u8fd9\u662f\u5f88\u5f3a\u5927\u7684\u4e00\u4e2a\u529f\u80fd\u3002\u7531\u4e8e\u6b64\u6280\u672f\u76ee\u524d\u8fdc\u672a\u5230\u666e\u53ca\u7684\u7a0b\u5ea6\uff0c\u6240\u4ee5\u8fd9\u91cc\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u60a8\u53ef\u4ee5\u53c2\u89c1\u4e0b\u9762\u7684\u4e24\u5c0f\u6bb5\u6837\u5f0f\u4ee3\u7801\uff1a<\/p>\n<pre>a:after {\n   content: \"(\" attr(href) \")\";\n}<\/pre>\n<pre>abbr:after {\n   content: \"(\" attr(title) \")\";\n}<\/pre>\n<p>\u8fd9\u91cc\u7406\u89e3\u548c\u4f7f\u7528\u90fd\u4e0d\u96be\uff0c\u5173\u952e\u5c31\u662fCSS3 \u7684<code>attr()<\/code>\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u524d\u77bb\uff1a\u5f3a\u5927\u7684CSS3 <code>attr()<\/code>\u65b9\u6cd5\u3002<\/strong><br \/><a href=\"http:\/\/www.w3.org\/TR\/css3-values\/#attribute\"><cite>CSS3 Values and Units<\/cite><\/a>\u8349\u6848\u6269\u5c55\u4e86<code>attr()<\/code>\u8868\u8fbe\u5f0f\u7684\u8303\u56f4\uff0c\u9664\u4e86\u8fd4\u56de\u5b57\u7b26\u4e32\uff0c\u8fd8\u53ef\u4ee5\u8fd4\u56de\u8bf8\u5982CSS <code>colors<\/code>, CSS <code>integer<\/code>, <code>length<\/code>, <code>angle<\/code>, <code>time<\/code>, <code>frequency<\/code>\u4ee5\u53ca\u5176\u4ed6\u4e00\u4e9b\u5355\u5143\u3002<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684<code>data<\/code>\u5c5e\u6027\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e9b\u975e\u5e38\u5f3a\u5927\u7684\u6548\u679c\uff0c\u8bf8\u5982\u7b80\u5355\u56fe\u8868\u56fe\u5f62\u7684\u6e32\u67d3\uff0c\u52a8\u753b\u6548\u679c\u7684\u5b9e\u73b0\u3002\u4f8b\u5982\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u6839\u636e\u5143\u7d20\u7684attribute\u503c\u8bbe\u5b9a<code>background-color<\/code>\u7684\u989c\u8272\u503c\uff0c\u8fd9\u5728\u663e\u793a\u5728\u7ebf\u8c03\u8272\u677f\u4e0a\u4f1a\u5927\u653e\u5f02\u5f69\uff1b\u6211\u4eec\u8fd8\u53ef\u4ee5\u6839\u636eattribute\u503c\u6307\u5b9a\u5143\u7d20\u7684\u5927\u5c0f\uff0c\u5c31\u50cf\u5b9a\u4e49\u56fe\u8868\u6bcf\u4e2a\u6761\u5f62\u7684\u957f\u5ea6\u4e00\u6837\u3002\u603b\u4e4b\uff0c<code>attr()<\/code>\u7684\u6f5c\u529b\u60ca\u4eba\u3002<\/p>\n<h3>\u4e5d\u3001\u6700\u540e\u4e00\u70b9\u5520\u53e8<\/h3>\n<p>\u76f8\u4fe1\u672c\u6587\u5bf9\u60a8\u7406\u89e3content\u5c5e\u6027\u4f1a\u6709\u4e0d\u5c11\u7684\u5e2e\u52a9\u3002\u53ea\u662f\u5728\u4e2d\u56fd\uff0c\u5728IE6\u4f9d\u65e7\u76db\u884c\u7684\u4e2d\u56fd\uff0c\u7531\u4e8eIE6\/7\u5bf9content\u7684\u4e0d\u652f\u6301\uff0c\u9650\u5236\u4e86\u8fd9\u4e00\u5f3a\u5927\u529f\u80fd\u7684\u6d41\u884c\uff0c\u4f46\u6211\u76f8\u4fe1\uff0c\u5728\u672a\u6765\u51e0\u5e74\u5185\uff0c\u4f1a\u8fce\u6765\u5b83\u7684\u6625\u5929\u7684\u3002\u968f\u7740\u5bf9CSS3\u7684\u9010\u6b65\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u4f1a\u53d1\u73b0\uff0cCSS3\u7684\u6f5c\u529b\u4e0e\u5f3a\u5927\u771f\u662f\u8d85\u4e4e\u60f3\u8c61\u3002\u6211\u53ef\u4ee5\u9884\u89c1\u518d\u672a\u6765\u51e0\u5e74\uff0c\u4f1a\u6709\u7c7b\u4f3c\u4e8e\u5bd2\u6b66\u7eaa\u7206\u53d1\u7684CSS\u65b0\u6280\u672f\u6d8c\u73b0\u51fa\u6765\uff0c\u90a3\u65f6\uff0c\u53ef\u771f\u662f\u524d\u7aef\u5f00\u59cb\u8d70\u5411\u5174\u76db\u7684\u65f6\u4ee3\u3002<\/p>\n<p><strong>\u53c2\u8003\u6587\u7ae0\uff1a<\/strong><br \/>1. <a href=\"http:\/\/dev.opera.com\/articles\/view\/css-generated-content-techniques\/\">CSS generated content techniques<\/a><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u81ea<a href=\"http:\/\/www.zhangxinxu.com\/\">\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<\/a>[<a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a>]<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=739\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=739<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u8bb2\u89e3CSS content\u5c5e\u6027\uff0c\u8fd9\u4e00\u5c5e\u6027\u60a8\u53ef\u80fd\u7528\u7684\u4e0d\u591a\uff0c\u5173\u6ce8\u7684\u4e5f\u4e0d\u591a\uff0c\u5176\u6839\u672c\u539f\u56e0\u5c31\u662fIE6\/IE7\u7684\u4e0d\u652f\u6301\uff0c\u4f46\u662f\uff0cIE6\/IE7\u7684\u6dd8\u6c70\u53ea\u662f\u65f6\u95f4\u95ee\u9898\u3002\u5b9e\u9645\u4e0a\uff0cCSS content\u5c5e\u6027\u662f\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5c5e\u6027\uff0c\u5176\u5e94\u7528\u8303\u56f4\u53ef\u80fd\u8981\u6bd4\u60a8\u4e4b\u524d\u8ba4\u4e3a\u7684\u8981\u5e7f\u6cdb\u7684\u591a\u3002\u672c\u6587\u5c31\u5c06\u9488\u5bf9\u8fd9\u4e00\u5c5e\u6027\u4ece\u57fa\u672c\u5f00\u59cb\u8be6\u7ec6\u9610\u8ff0\uff0c\u5e76\u5217\u4e3e\u4e00\u7cfb\u5217\u6709\u4ee3\u8868\u6027\u7684\u5e94\u7528\uff0c\u63d0\u4f9b\u8be6\u5c3d\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u6548\u679c\u622a\u56fe\u4ee5\u53cademo\u9875\u9762\uff0c\u5e0c\u671b\u60a8\u5bf9\u60a8\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[319,366,365,177,367,8,133,134,137,138],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/739"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=739"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/739\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}