{"id":7404,"date":"2018-03-15T01:17:45","date_gmt":"2018-03-14T17:17:45","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=7404"},"modified":"2019-04-07T23:29:22","modified_gmt":"2019-04-07T15:29:22","slug":"css3-default-pseudo-class-selector","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2018\/03\/css3-default-pseudo-class-selector\/","title":{"rendered":"CSS :default\u4f2a\u7c7b\u9009\u62e9\u5668\u7b80\u4ecb"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com\/wordpress\/?p=7404<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u5f97\u4fdd\u7559\u539f\u4f5c\u8005\u548c\u51fa\u5904\u3002<\/p>\n

\u4e00\u3001CSS :default\u4f2a\u7c7b\u9009\u62e9\u5668\u7b80\u4ecb<\/h3>\n

CSS :default<\/code>\u4f2a\u7c7b\u9009\u62e9\u5668\u53ea\u80fd\u4f5c\u7528\u5728\u8868\u5355\u5143\u7d20\u4e0a\uff0c\u8868\u793a\u9ed8\u8ba4\u72b6\u6001\u7684\u8868\u5355\u5143\u7d20\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u4e00\u4e2a\u4e0b\u62c9\u6846\uff0c\u53ef\u80fd\u6709\u591a\u4e2a\u9009\u9879\uff0c\u6211\u4eec\u9ed8\u8ba4\u4f1a\u8ba9\u67d0\u4e2a<option><\/code>\u5904\u4e8eselected<\/code>\u72b6\u6001\uff0c\u6b64\u65f6\u8fd9\u4e2a<option><\/code>\u53ef\u4ee5\u770b\u6210\u662f\u5904\u4e8e\u9ed8\u8ba4\u72b6\u6001\u7684\u8868\u5355\u5143\u7d20\uff08\u4f8b\u5982\u4e0b\u9762\u793a\u610f\u4ee3\u7801\u7684\u201c\u9009\u98794\u201d\uff09\uff0c\u7406\u8bba\u4e0a\u53ef\u4ee5\u5e94\u7528:default<\/code>\u4f2a\u7c7b\u9009\u62e9\u5668\u3002<\/p>\n

<select multiple>\r\n    <option>\u9009\u98791<\/option>\r\n    <option>\u9009\u98792<\/option>\r\n    <option>\u9009\u98793<\/option>\r\n    <option selected>\u9009\u98794<\/option>\r\n    <option>\u9009\u98795<\/option>\r\n    <option>\u9009\u98796<\/option>\r\n<\/select><\/pre>\n
\u5047\u8bbeCSS\u5982\u4e0b\uff1a<\/p>\n
option:default {\r\n    color: red;\r\n}<\/pre>\n
\u5219\u5728Chrome\u6d4f\u89c8\u5668\u4e0b\uff0c\u5f53\u6211\u4eec\u9009\u62e9\u5176\u4ed6\u9009\u9879\uff0c\u6b64\u65f6\u5c31\u53ef\u4ee5\u770b\u5230\u9009\u98794\u662f\u7ea2\u8272\u4e86\uff0c\u6548\u679c\u5982\u4e0b\u56fe\uff1a<\/p>\n
\"\u4e0b\u62c9\u9ed8\u8ba4\u9009\u9879\u7ea2\u8272\"<\/p>\n
Firefox\u6d4f\u89c8\u5668\u4e0b\u6548\u679c\u4e5f\u662f\u7c7b\u4f3c\uff1a<\/p>\n
\"Firefox\u4e0b\u9ed8\u8ba4\u9009\u98794\u7ea2\u8272\"<\/p>\n
IE\u6d4f\u89c8\u5668\u5219\u4e0d\u652f\u6301\u3002<\/p>\n
\u56e0\u6b64\uff0c\u79fb\u52a8\u7aef\u53ef\u4ee5\u653e\u5fc3\u4f7f\u7528\uff0c\u684c\u9762\u7aef\u4e0d\u7528\u7ba1IE\u7684\u9879\u76ee\u4e5f\u53ef\u4ee5\u7528\u8d77\u6765\u3002 <\/p>\n
\u4e8c\u3001CSS :default\u4f2a\u7c7b\u9009\u62e9\u5668\u4f5c\u7528<\/h3>\n
CSS :default<\/code>\u4f2a\u7c7b\u8bbe\u8ba1\u7684\u4f5c\u7528\u662f\u8ba9\u7528\u6237\u5728\u9009\u62e9\u4e00\u7ec4\u6570\u636e\u7684\u65f6\u5019\uff0c\u4f9d\u7136\u77e5\u9053\u9ed8\u8ba4\u9009\u9879\u662f\u4ec0\u4e48\uff0c\u5426\u5219\u5176\u4ed6\u9009\u9879\u4e00\u591a\uff0c\u9009\u7740\u9009\u7740\u5c31\u4e0d\u77e5\u9053\u9ed8\u8ba4\u63d0\u4f9b\u7684\u662f\u54ea\u4e2a\u4e86\uff0c\u7b97\u662f\u4e00\u79cd\u4f53\u9a8c\u589e\u5f3a\u7b56\u7565\u3002\u4f5c\u7528\u4e0d\u662f\u5f88\u5f3a\u70c8\uff0c\u4f46\u662f\u5173\u952e\u65f6\u523b\u5374\u5f88\u6709\u7528\u3002<\/p>\n
\u4e09\u3001CSS :default\u4f2a\u7c7b\u9009\u62e9\u5668\u4e00\u4e9b\u7279\u6027\u7814\u7a76<\/h3>\n
1. \u7814\u7a761\uff1aJS\u5feb\u901f\u4fee\u6539\u4f1a\u4e0d\u4f1a\u6709\u5f71\u54cd\uff1f<\/h4>\n
\u6d4b\u8bd5\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
:default {\r\n  transform: sclae(1.5);\r\n}<\/pre>\n
<input type=\"radio\" name=\"city\" value=\"0\">\r\n<input type=\"radio\" name=\"city\" value=\"1\" checked>\r\n<input type=\"radio\" name=\"city\" value=\"2\">\r\n<script>\r\ndocument.querySelectorAll('[type=\"radio\"]')[2].checked = true;\r\n<\/script><\/pre>\n
\u4e5f\u5c31\u662fHTML\u8bbe\u7f6e\u7684\u662f\u7b2c2\u4e2a\u5355\u9009\u6846\u653e\u59271.5\u500d\uff0cJS\u7acb\u5373\u77ac\u95f4\u8bbe\u7f6e\u7b2c3\u4e2a\u5355\u9009\u6846\u9009\u4e2d\uff0c\u7ed3\u679c\u53d1\u73b0\u5c31\u7b97\u5f88\u5feb\uff0c\u54ea\u6015\u662f\u51e0\u4e4e\u65e0\u5ef6\u8fdf\u7684JS\u4fee\u6539\uff0c:default<\/code>\u4f2a\u7c7b\u9009\u62e9\u5668\u7684\u6e32\u67d3\u4f9d\u7136\u4e0d\u53d7\u5f71\u54cd\u3002<\/p>\n
\"\u5355\u9009\u6309\u94ae\u9009\u4e2d\u548c\u653e\u5927\u6548\u679c\"<\/p>\n
\u56e0\u6b64\uff0c\u672c\u9898\u7b54\u6848\u662f\u65e0\u5f71\u54cd<\/strong>\u3002<\/p>\n
2. \u7814\u7a762\uff1a<option><\/code>\u5982\u679c\u6ca1\u6709\u8bbe\u7f6eselected<\/code>\u5c5e\u6027\uff0c\u6d4f\u89c8\u5668\u4f1a\u9ed8\u8ba4\u5448\u73b0\u7b2c1\u4e2a<option><\/code>\uff0c\u6b64\u65f6\u7b2c1\u4e2a<option><\/code>\u54cd\u5e94:default<\/code>\u4f2a\u7c7b\u9009\u62e9\u5668\u5417\uff1f<\/h4>\n
\u4f8b\u5982\uff1a<\/p>\n
option:default {\r\n    color: red;\r\n}<\/pre>\n
<select name=\"city\">\r\n    <option value=\"-1\">\u8bf7\u9009\u62e9<\/option>\r\n    <option value=\"1\">\u5317\u4eac<\/option>\r\n    <option value=\"2\">\u4e0a\u6d77<\/option>\r\n    <option value=\"3\">\u6df1\u5733<\/option>\r\n    <option value=\"4\">\u5e7f\u5dde<\/option>\r\n    <option value=\"5\">\u53a6\u95e8<\/option>\r\n<\/select><\/pre>\n
\u7ed3\u679c\u7b2c1\u4e2a<option><\/code>\u6ca1\u6709\u7ea2\u8272\uff0c\u5982\u4e0b\u56fe\uff0c\u56e0\u6b64\uff0c:default<\/code>\u9009\u62e9\u5668\u8981\u60f3\u6709\u4f5c\u7528\uff0c\u5fc5\u987b\u8981selected<\/code>\u4e3atrue<\/code>\u3002\u540c\u6837\u7684\uff0c\u5bf9\u4e8e\u5355\u590d\u9009\u6846\uff0cchecked<\/code>\u503c\u4e5f\u9700\u8981\u662ftrue<\/code>\u3002<\/p>\n
\"\u8bf7\u9009\u62e9\u6ca1\u6709\u53d8\u7ea2\"<\/p>\n
\u56e0\u6b64\uff0c\u672c\u9898\u7b54\u6848\u662f\u4e0d\u4f1a\u54cd\u5e94<\/strong>\u3002<\/p>\n
\u56db\u3001CSS :default\u4f2a\u7c7b\u9009\u62e9\u5668\u5b9e\u9645\u5e94\u7528<\/h3>\n
\u867d\u7136\u8bf4:default<\/code>\u9009\u62e9\u5668\u662f\u7528\u6765\u6807\u8bb0\u9ed8\u8ba4\u72b6\u6001\u7684\uff0c\u907f\u514d\u9009\u62e9\u6df7\u6dc6\u3002\u4f46\u662f\u5b9e\u9645\u4e0a\uff0c\u5728\u6211\u770b\u6765\uff0c\u66f4\u6709\u5b9e\u7528\u4ef7\u503c\u7684\u5e94\u8be5\u662f\u201c\u63a8\u8350\u6807\u8bb0\u201d\u3002<\/p>\n
\u73b0\u4ee3web\u5e94\u7528\u8d8a\u6765\u8d8a\u667a\u80fd\uff0c\u6709\u65f6\u5019\u6709\u4e9b\u64cd\u4f5c\u4f1a\u667a\u80fd\u7ed9\u7528\u6237push\u4e00\u4e9b\u9009\u62e9\uff0c\u5176\u4e2d\u9ed8\u8ba4\u5c06\u63a8\u8350\u7684\u8bbe\u7f6e\u8bbe\u4e3achecked<\/code>\u72b6\u6001\uff0c\u4ee5\u524d\u6211\u4eec\u7684\u505a\u6cd5\u662f\u53e6\u5916\u8f93\u51fa\u6587\u5b57\u201c\uff08\u63a8\u8350\uff09\u201d\uff0c\u73b0\u5728\u6709\u4e86:default<\/code>\u9009\u62e9\u5668\uff0c\u6211\u4eec\u7684\u5b9e\u73b0\u53ef\u4ee5\u53d8\u5f97\u66f4\u52a0\u7b80\u6d01\uff0c\u4e5f\u66f4\u5bb9\u6613\u7ef4\u62a4\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u7684\u70b9\u51fb\u8fd9\u91cc\uff1a:default\u9009\u62e9\u5668\u4e0e\u81ea\u52a8\u6dfb\u52a0\u63a8\u8350\u5b57\u6837demo<\/a><\/p>\n
\u6548\u679c\u5982\u4e0b\u56fe\uff1a<\/p>\n
\"\u589e\u52a0\u201c\u63a8\u8350\u201d\u5b57\u6837\u663e\u793a\u622a\u56fe\"<\/p>\n
\u70b9\u51fb\u5176\u4ed6\u9009\u9879\uff0c\u201c\u63a8\u8350\u201d\u4e8c\u5b57\u4f9d\u7136\u7a33\u56fa\u3002\u4ee5\u540e\uff0c\u5982\u679c\u8981\u66f4\u6362\u63a8\u8350\u9009\u9879\u4e86\uff0c\u76f4\u63a5\u4fee\u6539input<\/code>\u7684checked<\/code>\u5c5e\u6027\u5c31\u53ef\u4ee5\uff0c\u7ef4\u62a4\u66f4\u7b80\u5355\u4e86\u3002<\/p>\n
\u76f8\u5173CSS\u548cHTML\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
input:default + label::after {\r\n    content: '\uff08\u63a8\u8350\uff09';\r\n}<\/pre>\n
<p><input type=\"radio\" name=\"pay\" id=\"pay0\"> <label for=\"pay0\">\u652f\u4ed8\u5b9d<\/label><\/p>\r\n<p><input type=\"radio\" name=\"pay\" id=\"pay1\" checked> <label for=\"pay1\">\u5fae\u4fe1<\/label><\/p>\r\n<p><input type=\"radio\" name=\"pay\" id=\"pay2\"> <label for=\"pay2\">\u94f6\u884c\u5361<\/label><\/p><\/pre>\n
\u4e94\u3001\u7ed3\u675f\u8bed<\/h3>\n
\u5b58\u5728\u65e2\u6709\u9053\u7406\u3002\u6ca1\u6709\u4e00\u65e0\u662f\u5904\u7684\u7279\u6027\uff0c\u53ea\u662f\u4f60\u6ca1\u6709\u4e3a\u5176\u627e\u5230\u9002\u5408\u7684\u573a\u666f\u3002<\/p>\n
\u591a\u591a\u5173\u6ce8\u57fa\u7840\uff0c\u62d3\u5c55\u6280\u672f\u7684\u5e7f\u5ea6\uff0c\u5f88\u5bb9\u6613\u8ff8\u53d1\u6280\u672f\u7684\u7075\u611f\u3002<\/p>\n
\u611f\u8c22\u4f60\u7684\u9605\u8bfb\uff0c\u6b22\u8fce\u4ea4\u6d41\uff01<\/p>\n
<\/p>\n
\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=7404<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
CSS3 :default\u4f2a\u7c7b\u9009\u62e9\u5668\u4f5c\u7528\u8bbe\u8ba1\u7684\u4f5c\u7528\u662f\u8ba9\u7528\u6237\u5728\u9009\u62e9\u4e00\u7ec4\u6570\u636e\u7684\u65f6\u5019\uff0c\u4f9d\u7136\u77e5\u9053\u9ed8\u8ba4\u9009\u9879\u662f\u4ec0\u4e48\uff0c\u5426\u5219\u5176\u4ed6\u9009\u9879\u4e00\u591a\uff0c\u9009\u7740\u9009\u7740\u5c31\u4e0d\u77e5\u9053\u9ed8\u8ba4\u63d0\u4f9b\u7684\u662f\u54ea\u4e2a\u4e86\uff0c\u7b97\u662f\u4e00\u79cd\u4f53\u9a8c\u589e\u5f3a\u7b56\u7565\u3002\u4f5c\u7528\u4e0d\u662f\u5f88\u5f3a\u70c8\uff0c\u4f46\u662f\u5173\u952e\u65f6\u523b\u5374\u5f88\u6709\u7528\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":[1220,827,177,35,671,212],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/7404"}],"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=7404"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/7404\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=7404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=7404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=7404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}