{"id":99,"date":"2010-07-20T13:06:33","date_gmt":"2010-07-20T05:06:33","guid":{"rendered":"http:\/\/www.cnmiss.cn\/?p=99"},"modified":"2010-12-02T06:31:06","modified_gmt":"2010-12-02T06:31:06","slug":"jquery-%e9%80%89%e6%8b%a9%e5%99%a8%e5%a4%9a%e4%b8%aa%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.cnmiss.cn\/?p=99","title":{"rendered":"jQuery \u9009\u62e9\u5668\u591a\u4e2a\u4f7f\u7528\u65b9\u6cd5\u4ecb\u7ecd"},"content":{"rendered":"

$\u7684\u9009\u62e9\u5668\u90e8\u5206:
\n\u51e1\u662f\u8fd0\u7528$,\u5176\u8fd4\u56de\u503c\u662f\u4e00\u4e2aobject
\n$\u9009\u62e9\u5668\u4e3b\u8981\u7528\u4e8e\u9009\u62e9\u6807\u7b7e.\u57fa\u672c\u7528\u6cd5\u662f\u540ccss\u7684\u9009\u62e9\u5668.\u4f46\u662f,\u5f88\u8ba9\u4eba\u5174\u594b\u7684\u662f,\u4ed6\u652f\u6301\u5e38\u89c1\u7684\u6d4f\u89c8\u5668,\u800ccss\u4e2d\u5f88\u591a\u9009\u62e9\u5668\u662fIE6\u6240\u4e0d\u652f\u6301\u7684.<\/p>\n

1.\u57fa\u672c\u9009\u62e9\u5668(3\u79cd): —-\u51e1\u662f\u8fd0\u7528$,\u5176\u8fd4\u56de\u503c\u662f\u4e00\u4e2aobject
\n$(“\u6807\u7b7e\u540d”),\u5982$(“p”)\u662f\u9009\u53d6\u4e86\u6240\u6709\u7684p\u6807\u7b7e\u8282\u70b9
\n$(“#id\u540d”),\u5982$(“#test”)\u662f\u9009\u53d6\u4e86id\u4e3atest\u7684\u6807\u7b7e\u8282\u70b9
\n$(“.class\u540d”),\u5982$(“.test”)\u662f\u9009\u53d6\u4e86\u6240\u6709class\u4e3atest\u7684\u6807\u7b7e\u8282\u70b9
\n\u4e0a\u9762\u7684$(“\u6807\u7b7e\u540d”)\u548c$(“.class\u540d”)\u8fd4\u56de\u7684\u90fd\u662f\u6240\u6709\u6ee1\u8db3\u7684\u8282\u70b9,\u81f3\u4e8e\u8fdb\u4e00\u6b65\u7b5b\u9009\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e9b\u51fd\u6570,\u5982eq,gt,lt\u7b49\u7b49.<\/p>\n

2.\u7ec4\u9009\u62e9\u5668: —-3\u79cd\u57fa\u672c\u9009\u62e9\u5668\u7684\u7ec4\u5408\uff0c\u201c,\u201d\u9694\u5f00
\n\u4e0b\u9762\u8fd8\u662f\u73b0\u505a\u4e00\u4e2a\u7ea6\u5b9a:\u628a”\u6807\u7b7e\u540d\u6216#id\u540d\u6216.class\u540d”\u8bb0\u4f5cmix,\u5219mix\u8868\u793a\u4e00\u4e2a\u6807\u7b7e\u540d,\u6216\u4e00\u4e2a#id\u6216\u4e00\u4e2a.class.
\n$(“mix,mix,mix,…”),\u5982:$(“div,#test1,p,.test2,#test3”)<\/p>\n

3.\u540e\u4ee3\u9009\u62e9\u5668: —-3\u79cd\u57fa\u672c\u9009\u62e9\u5668\u7684\u7ec4\u5408\uff0c\u201c \u201d\u9694\u5f00\uff0c\u76f4\u7cfb\u7686\u751f\u6548
\n$(“mix mix”),\u5f53\u7136\u53ef\u4ee5\u662f\u591a\u4e2a\u5d4c\u5957,\u4f46\u540e\u4ee3\u9009\u62e9\u5668\u53ef\u4ee5\u662f\u6df1\u5c42\u5b50\u4ee3,\u6240\u4ee5$(“mix mix mix …”)\u8fd9\u79cd\u5199\u6cd5\u4f5c\u7528\u4e0d\u5927.\u4f8b\u5b50:$(“div .test”):\u5728div\u6807\u7b7e\u5185\u7684\u6240\u6709\u5177\u6709test\u7684class\u7684\u540e\u4ee3\u5143\u7d20(\u5c31\u662f\u88abdiv\u5d4c\u5957\u7684class\u5c5e\u6027\u4e3atest\u7684\u6807\u7b7e)<\/p>\n

4.\u5b50\u9009\u62e9\u5668: —-3\u79cd\u57fa\u672c\u9009\u62e9\u5668\u7684\u7ec4\u5408\uff0c\u201c>\u201d\u9694\u5f00\uff0c\u53ea\u4eb2\u5b50\u6709\u6548
\n$(“mix>mix”),\u8fd9\u4e2a\u653e\u5728\u540e\u4ee3\u9009\u62e9\u5668\u540e\u9762\u662f\u4e3a\u4e86\u548c\u5b83\u505a\u5bf9\u6bd4.\u5b50\u9009\u62e9\u5668\u53ea\u80fd\u9009\u62e9\u7b2c\u4e00\u4ee3\u5b50\u4ee3.\u4e0d\u5904\u7406\u6df1\u5c42\u5d4c\u5957.\u4f8b\u5b50:
\n$(“div>.test”)
\n<div><p><\/p><\/div>\u5bf9\u8fd9\u91cc\u7684p\u6bb5\u843d\u6807\u7b7e\u6709\u6548.\u4f46\u5bf9
\n<div><p><p><\/p><\/p><\/div>\u5bf9\u8fd9\u91cc\u7684p\u6bb5\u843d\u6807\u7b7e\u65e0\u6548,\u8fd9\u91cc\u8981\u7528
\n$(“div .test)<\/p>\n

5.\u4e34\u8fd1\u9009\u62e9\u5668: —-3\u79cd\u57fa\u672c\u9009\u62e9\u5668\u7684\u7ec4\u5408\uff0c\u201c+\u201d\u9694\u5f00\uff0c\u53ea\u4e0b\u4e00\u4e2a\u5144\u5f1f\u8282\u70b9
\n$(“mix+mix”),\u9009\u53d6\u4e0b\u4e00\u4e2a\u5144\u5f1f\u8282\u70b9.\u5982:$(“div +#test”),id\u4e3atest\u7684\u7684\u8282\u70b9\u5fc5\u987b\u662fdiv\u7684\u4e0b\u4e00\u4e2a\u5144\u5f1f\u8282\u70b9.
\n<div><\/div><p id=”test”><\/p>\u5728$(“div + #test”)\u4e2d\u80fd\u53d6\u5230p\u6bb5\u843d\u8282\u70b9
\n<div><\/div><p><\/p><p id=”test”><\/p>\u5219\u4e0d\u80fd\u53d6\u5230<\/p>\n

6.\u5c5e\u6027\u9009\u62e9\u5668: —-\u201c |=|^|$|*\u201d
\n\u628a\u5c5e\u6027\u9009\u62e9\u5668\u4e0d\u653e\u5728css\u9009\u62e9\u5668\u91cc\u9762\u662f\u56e0\u4e3ajQuery\u4e2d\u5199\u6cd5\u662f\u4e0d\u4e00\u6837\u7684.\u81f3\u4e8ecss\u4e2d\u5199\u6cd5\u53ef\u4ee5\u53c2\u8003\u6211\u4e4b\u524d\u5199\u7684\u4e00\u7bc7css\u7684\u9009\u62e9\u5668\u4e00\u6587.jQuery\u4e2d\u662f\u548cxPath\u7c7b\u4f3c\u7684\u5199\u6cd5:
\n$(“mix[@attr]”):\u9009\u53d6\u6240\u6709\u8be5mix\u4e14\u5177\u6709attr\u5c5e\u6027\u7684\u8282\u70b9
\n$(“mix[@attr=a_value”]):\u9009\u53d6\u6240\u6709\u8be5mix\u4e14\u5177\u6709attr\u5c5e\u6027\u5e76\u6ee1\u8db3\u5c5e\u6027\u503c\u4e3aa_value\u7684\u8282\u70b9
\n$(“mix[@attr^=a_value_head”]):attr\u5c5e\u6027\u7684\u5c5e\u6027\u503c\u662f\u4ee5a_value_head\u5f00\u5934\u7684
\n$(“mix[@attr$=a_value_end”]):attr\u5c5e\u6027\u7684\u5c5e\u6027\u503c\u662f\u4ee5a_value_end\u7ed3\u5c3e\u7684
\n$(“mix[@attr*=a_value”]):attr\u5c5e\u6027\u7684\u5c5e\u6027\u503c\u4e2d\u5305\u542ba_value<\/p>\n

7. \u9650\u5b9a\u9009\u62e9\u5668:
\n\u8fd9\u4e2a\u540d\u79f0\u662f\u6211\u81ea\u5df1\u8d77\u7684,\u5176\u5b9e\u9009\u62e9\u5668\u7ec4\u5408\u90fd\u6709\u9650\u5b9a\u7684\u610f\u601d,\u4f60\u660e\u767d\u540e\u9762\u6240\u4ecb\u7ecd\u7684\u77e5\u8bc6\u5373\u53ef.
\n\u5177\u6709\u9650\u5b9a\u5b50\u8282\u70b9\u9009\u62e9\u5668:$(“mix1[mix2]”):\u8fd4\u56de\u5305\u542bmix2\u7684mix1\u8282\u70b9.\u5982:$(“div[a]”):\u5305\u542ba\u6807\u7b7e\u7684div.
\n\u8fd9\u4e2a\u548c$(“div a”)\u4e0d\u76f8\u540c.\u540e\u8005\u8868\u793adiv\u4e2d\u7684a\u6807\u7b7e,\u8fd4\u56de\u7684\u662fa\u6807\u7b7e\u5bf9\u8c61,\u524d\u8005\u8fd4\u56de\u7684\u662fdiv\u6807\u7b7e\u5bf9\u8c61
\n\u5192\u53f7\u9650\u5b9a\u7ed3\u70b9\u9009\u62e9\u5668:$(“mix:condition”):mix\u6807\u7b7e,\u5e76\u4e14\u6ee1\u8db3\u9650\u5b9a\u6761\u4ef6.
\nE:root:\u7c7b\u578b\u4e3aE,\u5e76\u4e14\u662f\u6587\u6863\u7684\u6839\u5143\u7d20
\nE:nth-child(n):\u662f\u5176\u7236\u5143\u7d20\u7684\u7b2cn\u4e2a\u7c7b\u578b\u4e3aE\u7684\u5b50\u5143\u7d20 ,\u57fa\u6570\u4ece1\u5f00\u59cb
\nE:first-child:\u662f\u5176\u7236\u5143\u7d20\u7684\u7b2c1\u4e2a\u7c7b\u578b\u4e3aE\u7684\u5b50\u5143\u7d20
\nE:last-child:\u662f\u5176\u7236\u5143\u7d20\u7684\u6700\u540e\u4e00\u4e2a\u7c7b\u578b\u4e3aE\u7684\u5b50\u5143\u7d20
\nE:only-child:\u4e14\u662f\u5176\u7236\u5143\u7d20\u7684\u552f\u4e00\u4e00\u4e2a\u7c7b\u578b\u4e3aE\u7684\u5b50\u5143\u7d20<\/p>\n","protected":false},"excerpt":{"rendered":"

$\u7684\u9009\u62e9\u5668\u90e8\u5206: \u51e1\u662f\u8fd0\u7528$,\u5176\u8fd4\u56de\u503c\u662f\u4e00\u4e2aobject $\u9009\u62e9\u5668\u4e3b\u8981\u7528\u4e8e\u9009\u62e9\u6807 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[21],"class_list":["post-99","post","type-post","status-publish","format-standard","hentry","category-xxbj","tag-jquery"],"_links":{"self":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/posts\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=99"}],"version-history":[{"count":0,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=\/wp\/v2\/posts\/99\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cnmiss.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}