{"id":218,"date":"2008-04-30T21:08:49","date_gmt":"2008-04-30T21:08:49","guid":{"rendered":"http:\/\/www.ddcat.net\/blog2009\/?p=218"},"modified":"2008-04-30T21:08:49","modified_gmt":"2008-04-30T21:08:49","slug":"42-css%e9%80%89%e6%8b%a9%e5%99%a8%e2%80%95%e2%80%95%ef%bc%882%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.ddcat.net\/blog\/index.php\/2008\/04\/30\/42-css%e9%80%89%e6%8b%a9%e5%99%a8%e2%80%95%e2%80%95%ef%bc%882%ef%bc%89\/","title":{"rendered":"4.2 CSS\u9009\u62e9\u5668\uff082\uff09\u2015\u2015\u7c7b\u9009\u62e9\u5668\u4e0e\u5305\u542b\u9009\u62e9\u5668"},"content":{"rendered":"
    \n
  1. 4.2 CSS\u9009\u62e9\u5668\uff081\uff09\u2015\u2015\u901a\u914d\u9009\u62e9\u5668\u3001\u7c7b\u578b\u9009\u62e9\u5668\u4e0eID\u9009\u62e9\u5668<\/a><\/li>\n
  2. 4.2 CSS\u9009\u62e9\u5668\uff082\uff09\u2015\u2015\u7c7b\u9009\u62e9\u5668\u4e0e\u5305\u542b\u9009\u62e9\u5668<\/li>\n
  3. 4.2 CSS\u9009\u62e9\u5668\uff083\uff09\u2015\u2015\u5b50\u5143\u7d20\u9009\u62e9\u5668\u548c\u76f8\u90bb\u5144\u5f1f\u9009\u62e9\u5668<\/a><\/li>\n
  4. 4.2 CSS\u9009\u62e9\u5668\uff084\uff09\u2014\u2014\u5c5e\u6027\u9009\u62e9\u5668\uff08Attribute Selectors\uff09<\/a><\/li>\n<\/ol>\n

    4.2.4 \u7c7b\u9009\u62e9\u5668\uff08Class Selectors\uff09<\/h3>\n
    \"\"

    \u56fe4-4 \u7c7b\u9009\u62e9\u5668<\/p><\/div>\n

    \u7c7b\u9009\u62e9\u5668\u7684\u5b9a\u4e49\u5982\u56fe4-4\u6240\u793a\u3002<\/p>\n

    \u7c7b\u9009\u62e9\u5668\u548cID\u9009\u62e9\u5668\u5f88\u50cf\uff0c\u662f\u901a\u8fc7\u4e3a(X)HTML\u5143\u7d20\u6dfb\u52a0class\u5c5e\u6027\u800c\u751f\u6548\u7684\uff0c\u53ef\u5e94\u7528\u5728<body>\u5185\u7684\u4efb\u4f55\u5143\u7d20\u4e0a\uff0c\u4e0d\u8fc7\u7c7b\u9009\u62e9\u5668\u662f\u53ef\u91cd\u590d\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n

    <\/p>\n

    \n
    <div class=\"warning\">\u6ce8\u610f\uff01<\/div>\n<p class=\"warning\">\u6ce8\u610f\uff01<\/p>\n<p>\u8fd9\u91cc\u8981<span class=\"warning\">\u6ce8\u610f\uff01<\/span><\/p><\/pre>\n<\/div>\n
    \u4e5f\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684\u5143\u7d20\u5bf9\u540c\u4e00\u4e2a\u540d\u79f0\u7684\u7c7b\u9009\u62e9\u5668\u8bbe\u5b9a\u4e0d\u540c\u7684\u6837\u5f0f\u89c4\u5219\uff0c\u4f8b\u5982\u5bf9\u4e0a\u9762\u7684XHTML\u4ee3\u7801\uff0c\u53ef\u4ee5\u8bbe\u5b9aCSS\u89c4\u5219\u5982\u4e0b\uff0c\u5176\u5728\u6d4f\u89c8\u5668\u5185\u7684\u663e\u793a\u5982\u56fe4-5\u6240\u793a\u3002<\/p>\n
    \n
    div.warning { color: red; }\np.warning { color: blue; }\nspan.warning { color: yellow; }<\/pre>\n<\/div>\n
    \"\"
    \u56fe4-5 \u9488\u5bf9\u4e0d\u540c\u5143\u7d20\u5b9a\u4e49\u7c7b\u9009\u62e9\u5668\u7684\u663e\u793a\u6548\u679c<\/p><\/div>\n
    \u7531\u56fe4-5\u8bfb\u8005\u53ef\u4ee5\u53d1\u73b0\uff0c\u7c7b\u9009\u62e9\u5668\u7684\u5b9a\u4e49\u975e\u5e38\u7075\u6d3b\uff0c\u5373\u4f7f\u662f\u76f8\u540c\u540d\u79f0\u7684\u7c7b\u9009\u62e9\u5668\uff0c\u4e5f\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u8868\u73b0\u3002
    \n\u540c\u4e00\u4e2a\u5143\u7d20\u53ef\u4ee5\u8bbe\u5b9a\u591a\u4e2a\u7c7b\uff0c\u4e4b\u95f4\u7528\u7a7a\u683c\u5206\u5f00\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
    \n
    <div class=\"menu  main  sample\">\u4e00\u4e2a\u5143\u7d20\u53ef\u4ee5\u8bbe\u5b9a\u591a\u4e2aclss\u5c5e\u6027<\/div><\/pre>\n<\/div>\n
    \u8fd9\u51e0\u4e2a\u7c7b\u7684\u6837\u5f0f\u4f1a\u540c\u65f6\u4f5c\u7528\u4e8e\u8be5\u5143\u7d20\uff0c\u5982\u679c\u5176\u4e2d\u6709\u91cd\u590d\u5b9a\u4e49\u7684\u89c4\u5219\uff0c\u5219\u6309\u7167\u201c\u7279\u6b8a\u6027\u201d\u7684\u89c4\u5b9a\u6765\u51b3\u5b9a\u5982\u4f55\u663e\u793a\u3002<\/p>\n
    \u63d0\u793a\uff1a\u5173\u4e8e\u9009\u62e9\u5668\u7684\u7279\u6b8a\u6027\uff0c\u8bf7\u53c2\u89c1\u672c\u7ae0[4.6 \u5c42\u53e0]\u4e00\u8282\u3002<\/div>\n
    4.2.5 \u5305\u542b\u9009\u62e9\u5668\uff08Descendant Selectors\uff09<\/h3>\n
    \"\"
    \u56fe4-6\u5305\u542b\u9009\u62e9\u5668<\/p><\/div>\n
    \u5305\u542b\u9009\u62e9\u5668\uff0c\u4e5f\u79f0\u201c\u540e\u4ee3\u9009\u62e9\u5668\u201d\uff0c\u5176\u5b9a\u4e49\u89c4\u5219\u5982\u56fe4-6\u6240\u793a\u3002<\/p>\n
    \u5305\u542b\u9009\u62e9\u5668\u7684\u8fd0\u4f5c\u539f\u7406\u662f\u5efa\u7acb\u5728\u6587\u6863\u7ed3\u6784\u6811\u7684\u57fa\u7840\u4e0a\uff0c\u4e0a\u8ff0\u89c4\u5219\u7684\u542b\u4e49\u662f\u201cE1\u5143\u7d20\u5185\u5305\u542b\u7684\u6240\u6709E2\u5143\u7d20\u201d\uff0c\u6216\u8005\u201cE1\u5143\u7d20\u540e\u4ee3\u4e2d\u7684\u6240\u6709E2\u5143\u7d20\u201d\u3002\u4f8b\u5982\u6709XHTML\u5982\u4e0b\uff0c\u5176\u5728\u6d4f\u89c8\u5668\u5185\u7684\u6548\u679c\u5982\u56fe4-7\u6240\u793a\u3002<\/p>\n
    \n
    div em {\ncolor: blue;\n}<\/pre>\n
    <div>div\u4e2d\u7684<em>em<\/em>\u3002\n   <p>div\u4e2d\u7684p\u4e2d\u7684<em>em<\/em><\/p>\n<\/div>\n<p>\u4e0ediv\u540c\u7ea7\u7684p\u4e2d\u7684<em>em<\/em>\u3002<\/p><\/pre>\n<\/div>\n
    \"\"
    \u56fe4-7 \u4f7f\u7528\u5305\u542b\u9009\u62e9\u5668\u5b9a\u4e49CSS\u7684\u663e\u793a\u6548\u679c<\/p><\/div>\n
    \u5229\u7528\u5305\u542b\u9009\u62e9\u5668\u6765\u5b9a\u4e49\uff1a<\/p>\n
    \n
    div em {\u2026\u2026}<\/pre>\n<\/div>\n
    \u53ea\u5bf9<div>\u4e2d\u6240\u6709\u540e\u4ee3<em>\u5143\u7d20\u751f\u6548\uff0c\u800c\u6ca1\u6709\u5305\u542b\u5728<div>\u4e2d\u7684<p>\u4e2d\u7684<em>\u4e0d\u53d7\u5f71\u54cd\u3002
    \n\u5305\u542b\u9009\u62e9\u5668\u53ef\u4ee5\u6709\u591a\u5c42\uff0c\u4f8b\u5982\uff1a<\/p>\n
    \n
    div p a { \u2026\u2026 }               \/* <div>\u4e2d\u7684<p>\u4e2d\u7684<a> *\/\n#logo li em a { \u2026\u2026 }          \/* ID\u4e3alogo\u7684\u5143\u7d20\u4e2d\u7684<li>\u4e2d\u7684<em>\u4e2d\u7684<a> *\/\n#main p.warning strong { \u2026\u2026 }  \/* ID\u4e3amain\u7684\u5143\u7d20\u4e2d\u7684\u5e94\u7528\u4e86warning \u7c7b\u7684<p>\u4e2d\u7684<strong> *\/<\/pre>\n<\/div>\n
    \u5305\u542b\u9009\u62e9\u5668\u548c\u6587\u6863\u7ed3\u6784\u5173\u7cfb\u975e\u5e38\u5bc6\u5207\uff0c\u4f8b\u5982\u6709\u5982\u4e0bXHTML\u7ed3\u6784\uff1a<\/p>\n
    \n
    <div id=\"test\">\n<ul>\n    <li>ul\u4e2d\u7684li<\/li>\n    <li>ul\u4e2d\u7684li<\/li>\n<\/ul>\n<ol>\n    <li>ol\u4e2d\u7684li<\/li>\n    <li>ol\u4e2d\u7684li<\/li>\n<\/ol>\n<\/div><\/pre>\n<\/div>\n
    \u6b64\u65f6\uff0c\u5982\u679c\u5b9a\u4e49CSS\uff1a<\/p>\n
    \n
    #test li {\ncolor: red;\n}<\/pre>\n<\/div>\n
    \u5219\u4f1a\u5339\u914d\u201ctext\u201d\u5c42\u5185\u6240\u6709\u7684<li>\uff0c\u800c\u5982\u679c\u5982\u4e0b\u5b9a\u4e49CSS\uff1a<\/p>\n
    \n
    #test ul li {\ncolor: blue;\n}<\/pre>\n<\/div>\n
    \u53ea\u5339\u914d<ul>\u4e2d\u7684<li>\uff0c\u5bf9\u4e8e<ol>\u4e2d\u7684<li>\u5219\u6ca1\u6709\u5f71\u54cd\u3002
    \n\u540c\u6837\u7684\uff0c\u5982\u679c\u5982\u4e0b\u5b9a\u4e49CSS\uff1a<\/p>\n
    \n
    #test ol li {\ncolor: yellow;\n}<\/pre>\n<\/div>\n
    \u5219\u53ea\u5339\u914d<ol>\u4e2d\u7684<li>\uff0c\u5bf9\u4e8e<ul>\u4e2d\u7684<li>\u5219\u6ca1\u6709\u5f71\u54cd\u3002<\/p>\n
      \n
    1. 4.2 CSS\u9009\u62e9\u5668\uff081\uff09\u2015\u2015\u901a\u914d\u9009\u62e9\u5668\u3001\u7c7b\u578b\u9009\u62e9\u5668\u4e0eID\u9009\u62e9\u5668<\/a><\/li>\n
    2. 4.2 CSS\u9009\u62e9\u5668\uff082\uff09\u2015\u2015\u7c7b\u9009\u62e9\u5668\u4e0e\u5305\u542b\u9009\u62e9\u5668<\/li>\n
    3. 4.2 CSS\u9009\u62e9\u5668\uff083\uff09\u2015\u2015\u5b50\u5143\u7d20\u9009\u62e9\u5668\u548c\u76f8\u90bb\u5144\u5f1f\u9009\u62e9\u5668<\/a><\/li>\n
    4. 4.2 CSS\u9009\u62e9\u5668\uff084\uff09\u2014\u2014\u5c5e\u6027\u9009\u62e9\u5668\uff08Attribute Selectors\uff09<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
      \u7c7b\u9009\u62e9\u5668\u548cID\u9009\u62e9\u5668\u5f88\u50cf\uff0c\u662f\u901a\u8fc7\u4e3a(X)HTML\u5143\u7d20\u6dfb\u52a0class\u5c5e\u6027\u800c\u751f\u6548\u7684\uff0c\u53ef\u5e94\u7528\u5728\u5185\u7684\u4efb\u4f55\u5143\u7d20\u4e0a\uff0c\u4e0d\u8fc7\u7c7b\u9009\u62e9\u5668\u662f\u53ef\u91cd\u590d\u7684\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,4,20],"tags":[44,108,222,280],"class_list":["post-218","post","type-post","status-publish","format-standard","hentry","category-web","category-biejuguangmang","category-web-css","tag-css","tag-108","tag-222","tag-280"],"_links":{"self":[{"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/posts\/218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=218"}],"version-history":[{"count":0,"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/posts\/218\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=218"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ddcat.net\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}