{"id":2781,"date":"2012-11-16T12:02:11","date_gmt":"2012-11-16T04:02:11","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2781"},"modified":"2018-11-28T20:31:58","modified_gmt":"2018-11-28T12:31:58","slug":"before-after-use-web","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2012\/11\/before-after-use-web\/","title":{"rendered":"\u6211\u662f\u5982\u4f55\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4f7f\u7528before\/after\u4f2a\u5143\u7d20\u7684"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=2781<\/a><\/p>\n

\u4e00\u3001\u8bc9\u8bf4\u524d\u8a00<\/h3>\n

before<\/code>\/after<\/code>\u4f2a\u5143\u7d20\u76f8\u5f53\u4e8e\u5728\u5143\u7d20\u5185\u90e8\u63d2\u5165\u4e24\u4e2a\u989d\u5916\u7684\u6807\u7b7e\uff0c\u5176\u6700\u9002\u5408\u4e5f\u662f\u6700\u63a8\u8350\u7684\u5e94\u7528\u5c31\u662f\u56fe\u5f62\u751f\u6210<\/code>\u3002\u5728\u4e00\u4e9b\u7cbe\u81f4\u7684UI\u5b9e\u73b0\u4e0a\uff0c\u53ef\u4ee5\u7b80\u5316HTML\u4ee3\u7801\uff0c\u63d0\u9ad8\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u56fd\u5916\u8fd9\u4e24\u4e2a\u4f2a\u5143\u7d20\u5e94\u7528\u76f8\u5f53\u7684\u666e\u53ca\u4ee5\u53ca\u5174\u76db\uff0c\u4e0d\u8fc7\u8c8c\u4f3c\u6211\u4eec\u8fd9\u8fb9\u524d\u7aefer\u4eec\u666e\u904d\u7f3a\u4e4f\u4f7f\u7528\u8fd9\u4e24\u4e2a\u4f2a\u5143\u7d20\u7684\u610f\u8bc6\uff0c\u8981\u4f7f\u7528\u9876\u591a\u4e5f\u5c31\u662f\u8ddf\u98ce\u7684\u201c\u6e05\u9664\u6d6e\u52a8\u201d\u5e94\u7528\u3002<\/p>\n

\u6211\u60f3\uff0c\u8fd9\u53ef\u80fd\u53d7\u517c\u5bb9\u6027\u601d\u7ef4\u5f71\u54cd\u2014\u2014IE6\/7\u6d4f\u89c8\u5668\u5e76\u4e0d\u652f\u6301\uff0c\u8fd8\u662f\u7b49\u4ec0\u4e48\u65f6\u5019IE6\/IE7\u6362\u5c4a\u4e0b\u53f0\u7684\u65f6\u5019\u518d\u8bf4\u5427~~<\/p>\n

\u867d\u7136\u516b\u5c3e\u4e5d\u5c3e\u90fd\u662f\u6b8b\u4f53\uff0c\u5e76\u4e0d\u5f71\u54cd\u5341\u5c3e\u7684\u6210\u578b\u3002\u4e00\u7c92\u8001\u9f20\u5c4e\u6389\u8fdb\u9505\u91cc\uff0c\u4f60\u5c31\u771f\u8ba9\u8fd9\u4e00\u9505\u7ea2\u70e7\u8089\u6bc1\u4e86\u2014\u2014\u628a\u6709\u7fd4\u7684\u8fd9\u90e8\u5206\u7ed9\u963f\u9ec4\uff08\u4e2d\u534e\u7530\u56ed\u72ac\uff09\u5403\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n

\u672c\u6587\u7b80\u5355\u5c55\u793a\u6211\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u5e94\u7528before<\/code>\/after<\/code>\u4f2a\u5143\u7d20\u65f6\u5019\uff0c\u5982\u4f55CSS\u547d\u540d\u7684\uff0cHTML\u6709\u54ea\u4e9b\u5904\u7406\uff0c\u5982\u4f55\u5bf9\u4ed8IE6, IE7\u6d4f\u89c8\u5668\u7684\u3002<\/p>\n

\u4e8c\u3001\u5927\u81f4\u5904\u7406\u6d41\u7a0b<\/h3>\n
    \n
  1. CSS\u90e8\u5206<\/strong>
    \n\u7c7b\u4f3c\u8fd9\u6837\u5b50\u7684\u547d\u540d\uff1a<\/p>\n
    \n
    .example:before, .example before {}\r\n.example:after, .example after {}<\/pre>\n<\/div>\n
    \u4e00\u4e2a\u6709\u5192\u53f7\uff0c\u4e00\u4e2a\u662f\u7a7a\u683c\u5206\u9694\u3002\u524d\u8005IE8+\u53ca\u5176\u4ed6\u73b0\u4ee3\u6d4f\u89c8\u5668\uff1b\u540e\u8005\u4e3aIE6-7\u51c6\u5907\u7684\u3002<\/li>\n
  2. HTML\u90e8\u5206<\/strong>
    \n\u5982\u679cbefore<\/code>\/after<\/code>\u4f2a\u5143\u7d20\u542b\u6709content<\/code>\u5185\u5bb9\uff08\u4e0d\u662f\u7a7a\u5b57\u7b26\uff09\uff0c\u5219content\u5185\u5bb9\u5728HTML\u6807\u7b7e\u4e0a\u5448\u73b0\uff08\u65b9\u4fbfIE6\/7\u4e0b\u83b7\u53d6\uff09\uff0c\u4f8b\u5982\uff1a<\/p>\n
    \n
    <div class=\"example\" data-content=\"◀\"><\/div><\/pre>\n<\/div>\n
    CSS\u90e8\u5206\u7684content<\/code>\u5c5e\u6027\u503c\u5e94\u8be5\u5982\u4e0b\uff1a<\/p>\n
    \n
    .example:before, .example before { content: attr(data-content);<\/span> ... }\r\n.example:after, .example after { content: attr(data-content);<\/span> ... }<\/pre>\n<\/div>\n<\/li>\n
  3. JS\u90e8\u5206<\/strong>
    \nJS\u662f\u4e3aIE6\/7\u51c6\u5907\u7684\uff0c\u6240\u505a\u7684\u4e8b\u60c5\u5f88\u7b80\u5355\uff0c\u7f51\u5143\u7d20\u5185\u90e8\u63d2\u5165\u4e24\u4e2a\u5143\u7d20\uff0c\u6807\u7b7e\u540d\u4e3a”before<\/code>“\u6216”after<\/code>“\u6216\u540c\u65f6\u3002\u65b9\u6cd5\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
    \n
    var $beforeAfter = function(dom) {\r\n    if (document.querySelector || !dom && dom.nodeType !== 1) return;\r\n    \r\n    var content = dom.getAttribute(\"data-content\") || '';     \r\n    var before = document.createElement(\"before\")\r\n        , after = document.createElement(\"after\");\r\n      \r\n    \/\/ \u5185\u90e8content<\/span>\r\n    before.innerHTML = content;\r\n    after.innerHTML = content;\r\n    \/\/ \u524d\u540e\u5206\u522b\u63d2\u5165\u8282\u70b9<\/span>\r\n    dom.insertBefore(before, dom.firstChild);\r\n    dom.appendChild(after);\r\n};<\/pre>\n<\/div>\n<\/li>\n<\/ol>\n
    \u4e8e\u662f\uff0c\u60a8\u60f3\u8981\u7684\u6548\u679c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e86\uff0c\u4f8b\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\u3002<\/p>\n
    \u4e09\u3001\u5b9e\u9645\u5e94\u7528\u4e4b\u542b\u5c16\u89d2\u7684tip\u7c7b\u63d0\u793a\u6548\u679c<\/h3>\n
    \u4e0b\u9762\u662f\u6548\u679c\u56fe\uff0cIE6\u4e0b\u4ee5\u53caFireFox16\u4e0b\u7684\u6548\u679c\u622a\u56fe\uff1a
    \n\"IE6\u4e0btip\u7c7b\u63d0\u793a\u6548\u679c\u622a\u56fe \"FireFox16\u4e0btip\u63d0\u793a\u6548\u679cafter\/before\u4e0b\u6548\u679c<\/p>\n
    \u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1abefore\/after\u751f\u6210\u7684tip\u7c7b\u63d0\u793a\u6548\u679cdemo<\/a><\/p>\n
    IE6\/7\u7684CSS\u4e0eIE8+\u57fa\u672c\u4e0a\u90fd\u662f\u516c\u7528\u7684\uff0c\u552f\u4e00\u4e0d\u540c\u5c31\u662f\u9009\u62e9\u5668\u4e00\u4e2a\u7a7a\u683c\u95f4\u5f00\uff0c\u4e00\u4e2a\u5192\u53f7\u4f2a\u7c7b\uff0c\u5982\u4e0b\uff1a<\/p>\n
    \n
    .tip:before, .tip before,\r\n.tip:after, .tip after{...}<\/pre>\n<\/div>\n
    \u7136\u540e\uff0cJS\u5982\u4e0b\u4e00\u8c03\u7528\u5373\u53ef\uff1a<\/p>\n
    \n
    $beforeAfter(document.getElementById(\"tip\"));<\/pre>\n<\/div>\n
    OK\uff0c\u5168\u90e8\u517c\u5bb9\uff0c\u5b8c\u4e8bOK\u3002<\/p>\n
    \u4e00\u822c\u800c\u8a00\uff0cafter<\/code>\u4ee5\u53cabefore<\/code>\u751f\u6210\u7684\u5143\u7d20\u53ea\u80fd\u662f\u4e00\u4e9b\u4e0d\u5f71\u54cd\u529f\u80fd\u6216\u662f\u91cd\u8981\u89c6\u89c9\u7684\u6548\u679c\u3002\u56e0\u6b64\uff0cIE6\/7\u4e0bJS\u9a71\u52a8\u4e0d\u5173\u7d27\u8981\u6548\u679c\u7684\u751f\u6210\u662f\u76f8\u5f53OK\u7684\u3002<\/p>\n
    \u8d76\u7740\u5e2e\u8001\u5a46\u5e26\u996d\uff0c\u629b\u7816\u5f15\u7389\uff0c\u5c31\u8fd9\u4e9b\uff01<\/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\uff1a    http:\/\/www.zhangxinxu.com\/wordpress\/?p=2781<\/a><\/p>\n
    \uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
    before\/after\u4f2a\u5143\u7d20\u76f8\u5f53\u4e8e\u5728\u5143\u7d20\u5185\u90e8\u63d2\u5165\u4e24\u4e2a\u989d\u5916\u7684\u6807\u7b7e\uff0c\u5176\u6700\u9002\u5408\u4e5f\u662f\u6700\u63a8\u8350\u7684\u5e94\u7528\u5c31\u662f\u56fe\u5f62\u751f\u6210\u3002\u5728\u4e00\u4e9b\u7cbe\u81f4\u7684UI\u5b9e\u73b0\u4e0a\uff0c\u53ef\u4ee5\u7b80\u5316HTML\u4ee3\u7801\uff0c\u63d0\u9ad8\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u56fd\u5916\u8fd9\u4e24\u4e2a\u4f2a\u5143\u7d20\u5e94\u7528\u76f8\u5f53\u7684\u666e\u53ca\u4ee5\u53ca\u5174\u76db\uff0c\u4e0d\u8fc7\u8c8c\u4f3c\u6211\u4eec\u8fd9\u8fb9\u524d\u7aefer\u4eec\u666e\u904d\u7f3a\u4e4f\u4f7f\u7528\u8fd9\u4e24\u4e2a\u4f2a\u5143\u7d20\u7684\u610f\u8bc6\uff0c\u8981\u4f7f\u7528\u9876\u591a\u4e5f\u5c31\u662f\u8ddf\u98ce\u7684\u201c\u6e05\u9664\u6d6e\u52a8\u201d\u5e94\u7528\u3002
    \n\u6211\u60f3\uff0c\u8fd9\u53ef\u80fd\u53d7\u517c\u5bb9\u6027\u601d\u7ef4\u5f71\u54cd\u2026\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[319,366,386],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/2781"}],"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=2781"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/2781\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=2781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=2781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=2781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}