{"id":1855,"date":"2011-08-09T15:55:51","date_gmt":"2011-08-09T07:55:51","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=1855"},"modified":"2018-01-02T00:33:06","modified_gmt":"2018-01-01T16:33:06","slug":"css%e7%9b%b8%e5%af%b9%e5%ae%9a%e4%bd%8d%e7%bb%9d%e5%af%b9%e5%ae%9a%e4%bd%8d%e4%ba%94%e4%b9%8bz-index%e7%af%87","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2011\/08\/css%e7%9b%b8%e5%af%b9%e5%ae%9a%e4%bd%8d%e7%bb%9d%e5%af%b9%e5%ae%9a%e4%bd%8d%e4%ba%94%e4%b9%8bz-index%e7%af%87\/","title":{"rendered":"CSS\u76f8\u5bf9\u5b9a\u4f4d|\u7edd\u5bf9\u5b9a\u4f4d(\u4e94)\u4e4bz-index\u7bc7"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=1855<\/a><\/p>\n

\u8865\u5145\u4e8e2016-01-03<\/strong>
\n\u672c\u6587\u5185\u5bb9\u4ec5\u5c5e\u4e8ez-index\u8868\u73b0\u5c42\u4e00\u4e9b\u76ae\u6bdb\u5185\u5bb9\uff0c\u4e0d\u8fc7\u4e00\u4e9b\u7ecf\u9a8c\u89c2\u70b9\u8fd8\u662f\u5f88\u6709\u6307\u5bfc\u610f\u4e49\u7684\u3002<\/p>\n

\u4e00\u3001\u6d77\u8fb9\u62fe\u8d1d<\/h3>\n

z-index<\/code>\u5c5e\u6027\u76ee\u524d\u53ea\u6709\u5728position:relative<\/code>\u3001position:absolute<\/code>\u548cposition:fixed<\/code>\u53c2\u4e0e\u7684\u60c5\u51b5\u4e0b\u624d\u6709\u4f5c\u7528\uff0c\u8868\u793a\u5c42\u7ea7\uff0c\u7c7b\u4f3cphotoshop\u4e2d\u5c42\u7ea7\u7684\u6982\u5ff5\u3002
\n\"photoshop\u6539\u53d8\u5c42\u987a\u5e8f\"<\/p>\n

\u5173\u4e8ez-index\u7684\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\uff0c\u572809\u5e74\u7684\u201cIE6\u4e0bz-index\u72af\u766b\u4e0d\u8d77\u4f5c\u7528bug\u7684\u521d\u6b65\u7814\u7a76<\/a>\u201d\u4e00\u6587\u4e2d\u6709\u6240\u63d0\u53ca\uff0c\u4e0b\u56fe\u4e3a\u5f53\u65f6\u81ea\u5df1\u7ed8\u5236\u7684\u4e00\u5f20\u4e1a\u4f59\u56fe\u7247\u3002
\n\"z-index\u793a\u610f\u56fe\"<\/p>\n

\u4f17\u6240\u5468\u77e5\u7684\u4e00\u4e9b\u4e1c\u897f\uff0c\u4e0d\u5570\u55e6\u4e86\u3002<\/p>\n

\u4e8c\u3001\u4e16\u754c\u4e0a\u672c\u6ca1\u6709z-index<\/h3>\n

\u8981\u6709\u8fd9\u6837\u5b50\u7684\u610f\u8bc6\uff1aabsolute<\/code>\u662f\u4e00\u4e2a\u80fd\u591f\u72ec\u5f53\u4e00\u9762\u7684\u5c5e\u6027\uff0c\u5176\u4f7f\u7528\u53ef\u4ee5\u4e0d\u8981relative<\/code>\uff0c\u5f53\u7136\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u4f7f\u7528z-index<\/code>\u3002\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5143\u7d20\u5e94\u7528\u4e86\u975estatic<\/code>\u7684position<\/code>\u5c5e\u6027\u540e\uff0c\u5176\u5c31\u4f1a\u6709\u4e00\u4e2a\u9690\u6666\u7684\u5c42\u7ea7\uff0c\u4f1a\u5c45\u4e8e\u666e\u901a\u5143\u7d20\u4e4b\u4e0a\uff0c\u65e0\u9700\u989d\u5916\u8bbe\u7f6ez-index\u5c5e\u6027\u503c\u3002<\/p>\n

\u7136\u800c\uff0c\u773c\u89c2\u73b0\u5b9e\u4e16\u754c\uff0cz-index\u5c5e\u6027\u503c\u7684\u6ee5\u7528\u8ddfabsolute\u5c5e\u6027\u503c\u7684\u6ee5\u7528\u6709\u7684\u4e00\u62fc\u2014\u2014\u53ea\u8981\u7528\u5230\u7edd\u5bf9\u5b9a\u4f4d\/\u76f8\u5bf9\u5b9a\u4f4d\u7684\u5730\u65b9\u5c31\u8981\u8bbe\u7f6e\u4e00\u4e2az-index\u503c\uff0c\u4ee5\u8868\u793a\u81ea\u5df1\u7684\u5730\u4f4d\u3002\u7ed3\u679c\uff0cN\u591a\u4e2az-index\u4e4b\u540e\uff0c\u7f51\u7ad9\u524d\u7aef\u6362\u4eba\u4e4b\u540e\uff0c\u9875\u9762\u7684z-index\u5c42\u7ea7\u6df7\u4e71\u4e86\uff0c\u4e3a\u4e86\u8ba9\u65b0\u6dfb\u52a0\u5143\u7d20\u4e0a\u9762\u663e\u793a\uff0c\u4e0d\u60dc\u8bbe\u7f6ez-index<\/code>\u7684\u503c\u4e3a999<\/code>\u6216\u662f9999<\/code>\u7b49\u3002\u8fd9\u5c31\u597d\u6bd4\u7403\u961f\uff0c\u4eba\u4eba\u90fd\u60f3\u5f53\u8001\u5927\uff0c\u6700\u540e\u7ed3\u679c\u662f\u4e2a\u5f88\u6709\u5473\u9053\u7684\u5c4e\u3002<\/p>\n

\u4e0d\u59a8\u770b\u51e0\u4e2a\u7ad9\u70b9\uff0c\u505a\u4e2a\u70b9\u8bc4\u3002\u4f8b\u5982\u597d\u4e45\u6ca1\u6709\u62ff\u6765\u8bf4\u4e8b\u7684\u65b0\u6d6a\u5fae\u535a<\/a>\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u770b\u5176\u5934\u90e8\u7684z-index\u7684\u662f\u5982\u4f55\u7684\u6df7\u4e71\u5982\u9ebb\uff1a
\n\"\u65b0\u6d6a\u5fae\u535az-index\u5c42\u7ea7\u6cdb\u6ee5\u793a\u4f8b \"\u65b0\u6d6a\u5fae\u535az-index\u6cdb\u6ee5\u4f7f\u7528\u622a\u56fe \"\u65b0\u6d6a\u5fae\u535a\u5934\u90e8z-index\u6cdb\u6ee5\u4f7f\u7528\u793a\u610f \"\u65b0\u6d6a\u5fae\u535a\u5934\u90e8\u8fc7\u591a\u4f7f\u7528\u7684z-index \"\u65b0\u6d6a\u5fae\u535a\u8fc7\u4e8e\u6cdb\u6ee5\u4f7f\u7528\u7684z-index<\/p>\n

\u7136\u540e\u6d6e\u52a8\u6846\u63d2\u4ef6\u8fd8\u6709\u4e2a\u5927\u5927\u7684z-index\u503c\uff08firebug\u663e\u793az-index:850<\/code>\uff09\u3002\u4e8e\u662f\uff0c\u4e00\u573a\u6069\u6028\u60c5\u4ec7\uff0c\u590d\u6742\u7ea0\u845b\u7684\u53e4\u88c5\u7a7f\u8d8a\u5267\u5f00\u6f14\u4e86\u2026\u2026<\/p>\n

\u5bf9\u4e8e\u8fd9\u4e9b\u5728\u201c\u5730\u9762\u201d\u4e0a\u5e72\u6d3b\u7684\u5143\u7d20\uff0c\u9996\u5148\u5c3d\u91cf\u907f\u514d\u7edd\u5bf9\u5b9a\u4f4d\uff0c\u5c31\u7b97\u4f7f\u7528\u4e86\u7edd\u5bf9\u5b9a\u4f4d\uff0c\u81f3\u5c1150%\u7684z-index\u503c\u90fd\u662f\u6ca1\u6709\u5fc5\u8981\u7684\uff0c\u76f4\u63a5\u53ef\u4ee5\u585e\u8fdbToTo\u9a6c\u6876\u91cc\u51b2\u6389\u7684\u3002\u4e0d\u4fe1\uff0c\u4f60\u628a\u8fd9\u4e9bz-index\u503c\u90fd\u5220\u6389\u8bd5\u8bd5\uff0c\u6709\u4e00\u534a\u90fd\u662f\u65e0\u4f24\u5927\u96c5\u7684\u3002<\/p>\n

position<\/code>\u5c5e\u6027\u4e2d\u7684\u201c\u540e\u6765\u5c45\u4e0a\u201d\u8fd9\u4e2a\u663e\u793a\u89c4\u5219\u662f\u6ca1\u6709\u517c\u5bb9\u6027\u95ee\u9898\u7684\uff0c\u6240\u4ee5\uff0c\u8981\u60f3\u4e00\u4e2a\u5143\u7d20\u4e0a\u9762\u663e\u793a\uff0c\u76f4\u63a5\u653e\u540e\u9762\u5c31\u53ef\u4ee5\u4e86\uff0c\u65e0\u9700z-index\u3002<\/p>\n

\u6cdb\u6ee5\u7684z-index<\/code>\u65e2\u6d6a\u8d39\u4ee3\u7801\uff0c\u53c8\u4e0d\u5229\u4e8e\u540e\u671f\u7ef4\u62a4\u548c\u4ed6\u4eba\u63a5\u53d7\uff0c\u4e3a\u4f55\u4e0d\u6254\u6389\u5462\u3002\u8bb0\u4f4f\uff0c\u8fd9\u4e2a\u4e16\u754c\u4e0a\u672c\u6ca1\u6709z-index<\/code>\u3002<\/p>\n

\u4e09\u3001z-index\u76841, 2, 3\u89c4\u5219<\/h3>\n

\u6709\u65f6\u5019\uff0c\u9762\u5bf9\u590d\u6742\u7684\u4ea4\u4e92\uff0c\u6211\u4eec\u8fd8\u662f\u9700\u8981z-index\u503c\u7684\uff0c\u6b64\u65f6\uff0c\u5982\u4f55\u907f\u514dz-index<\/code>\u5c42\u7ea7\u7684\u6df7\u4e71\u5462\uff1f<\/p>\n

\u6211\u662f\u5982\u4f55\u5904\u7406\u7684\uff1a<\/p>\n

1. \u5f52\u95e8\u522b\u7c7b\u3002\u5c06z-index<\/code>\u5206\u4e3a\u4e24\u6d3e\uff0c\u5206\u4e3a\u201c\u5730\u9762\u6d3e\u201d\u548c\u201c\u5929\u7a7a\u6d3e\u201d\u3002\u201c\u5929\u7a7a\u6d3e\u201d\u5c31\u662f\u6307\u906e\u7f69\u5f39\u6846\uff0c\u7c7b\u4f3cboxy\u8fd9\u79cd\uff0c\u6216\u662f\u5176\u4ed6\u4e00\u4e9b\u4ea4\u4e92\u7ec4\u4ef6\u7b49\uff1b\u5176\u4f59\u7684\u5c31\u7b97\u662f\u201c\u5730\u9762\u6d3e\u201d\u4e86\u3002<\/p>\n

2. \u5e94\u75281<\/code>, 2<\/code> ,3<\/code>\u89c4\u5219\u3002\u5730\u9762\u6d3e\u5143\u7d20\u7684z-index<\/code>\u6ca1\u6709\uff0c\u6216\u4e3a1<\/code>\uff0c\u6216\u662f2<\/code>\uff0c\u6216\u662f3<\/code>\u3002\u6839\u636e\u6211\u7684\u7ecf\u9a8c\uff0c\u201c\u5730\u9762\u6d3e\u5143\u7d20\u201d\uff0c\u5f88\u5c11\u9700\u8981\u4f7f\u7528z-index<\/code>\u4e3a2<\/code>\uff0c\u81f3\u4e8ez-index:3<\/code>\u6211\u8bb0\u5fc6\u4e2d\u8fd8\u6ca1\u6709\u78b0\u5230\u8fc7\uff0c\u56e0\u4e3a\u4e00\u4e2a\u9875\u9762\u4ea4\u4e92\u518d\u600e\u4e48\u590d\u6742\uff0c\u4e5f\u4e0d\u53ef\u80fd\u6b63\u597d\u662f\u524d\u9762\u4e00\u4e2a\u5143\u7d20\u6bd4\u540e\u9762\u5143\u7d20\u5c42\u7ea7\u9ad8\uff0c\u800c\u4e14\u67093~4\u4e2a\u5143\u7d20\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5bf9\u4e8e\u201c\u5730\u9762\u201d\u5143\u7d20\uff0c\u6211\u4eec\u53ea\u8981\u4f7f\u7528[null, 1, 2, 3]\u4e4b\u95f4\u7684\u5c42\u7ea7\u5c31\u80fd\u5e94\u4ed8\u6240\u6709\u7684\u60c5\u51b5\u3002\u4e8e\u662f\u4e4e\uff0c\u6211\u4eec\u60f3\u8981\u51fa\u7ebf\u5c42\u7ea7\u6df7\u4e71\u7684\u60c5\u51b5\u90fd\u6bd4\u8f83\u96be\u4e86\u3002<\/p>\n

\u90fd\u662f\u806a\u660e\u4eba\uff0c\u90fd\u61c2\u7684\uff0c\u5c31\u4e0d\u5570\u55e6\u4e86\u3002<\/p>\n

\u56db\u3001\u9057\u6f0f\u7684position:fixed<\/h3>\n

\u672c\u7cfb\u5217\u5e76\u6ca1\u6709\u5c06position:fixed\u653e\u5728\u5176\u4e2d\uff0c\u4e3b\u8981\u662f\u8fd9\u4e2a\u5c5e\u6027\u6bd4\u8f83\u7684\u5b89\u5206\u5b88\u5df2\uff0c\u6ca1\u6709\u4ec0\u4e48\u5671\u5934\u53ef\u8bb2\u3002<\/p>\n

\u81f3\u6b64\uff0c\u672c\u7cfb\u5217\u544a\u4e00\u6bb5\u843d\u3002\u524d\u540e\u5dee\u4e0d\u591a\u67091\u5e74\u7684\u65f6\u95f4\u8de8\u5ea6\uff0c\u6bd4\u54c8\u5229\u6ce2\u7279\u7684\u5468\u671f\u8981\u77ed\u591a\u4e86\u3002\u2026\u2026\u4e0d\u7ba1\u600e\u6837\uff0c\u963f\u91cc\u560e\u591a\u3002<\/p>\n

\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u81ea\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<\/a>[http:\/\/www.zhangxinxu.com<\/a>]
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=1855<\/a><\/p>\n

\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

\u672c\u6587\u662fCSS\u76f8\u5bf9\u5b9a\u4f4d\u7edd\u5bf9\u5b9a\u4f4d\u7cfb\u5217\u7684\u6700\u540e\u4e00\u7bc7\uff0c\u7b80\u5355\u8bb2\u8bb2z-index\u3002\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u76ee\u524dz-index\u6ee5\u7528\u7684\u4e00\u4e2a\u60c5\u51b5\u3002\u5176\u6b21\u662f\u8bb2\u4e86\u4e0b\u81ea\u5df1\u907f\u514dz-index\u6df7\u4e71\u4f7f\u7528\u800c\u91c7\u7528\u7684\u5206\u95e8\u522b\u7c7b\u4e0b\u76841,2,3\u5e94\u7528\u89c4\u5219\u3002\u672c\u6587\u6ca1\u6709demo\uff0c\u6ca1\u6709\u6e90\u4ee3\u7801\u5c55\u793a\uff0c\u53ea\u6709\u4e00\u4e9b\u622a\u56fe\u3002\u5185\u5bb9\u76f8\u5bf9\u524d\u9762\u51e0\u7bc7\u8981\u5c11\u5f88\u591a\uff0c\u4f46\u4e5f\u7cbe\u70bc\u4e86\u3002\u603b\u4e4b\uff0c\u5e0c\u671b\u672c\u6587\u7684\u5185\u5bb9\u80fd\u591f\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":[276,275,272,273,526,326,70],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/1855"}],"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=1855"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/1855\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=1855"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=1855"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=1855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}