{"id":6131,"date":"2017-05-13T23:04:32","date_gmt":"2017-05-13T15:04:32","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=6131"},"modified":"2023-03-13T23:55:25","modified_gmt":"2023-03-13T15:55:25","slug":"html-tabindex","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2017\/05\/html-tabindex\/","title":{"rendered":"HTML tabindex\u5c5e\u6027\u4e0eweb\u7f51\u9875\u952e\u76d8\u65e0\u969c\u788d\u8bbf\u95ee"},"content":{"rendered":"<p>by <a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=6131\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=6131<\/a><br \/>\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u5f97\u5230\u539f\u4f5c\u8005\u4e66\u9762\u8bb8\u53ef\uff0c\u540c\u65f6\u4fdd\u7559\u539f\u4f5c\u8005\u548c\u51fa\u5904\uff0c\u6458\u8981\u5f15\u6d41\u5219\u968f\u610f\u3002<\/p>\n<p>HTML\u867d\u7136\u5165\u95e8\u7b80\u5355\uff0c\u4f46\u662f\uff0c\u8981\u60f3\u65e5\u540e\u6df1\u5165\uff0c\u5374\u8981\u82b1\u8d39\u975e\u5e38\u5927\u91cf\u7684\u65f6\u95f4\uff0c\u56e0\u4e3a\u4e00\u4e9b\u770b\u4f3c\u975e\u5e38\u7b80\u5355\u7684\u5c5e\u6027\uff0c\u5b9e\u9645\u4e0a\u7275\u626f\u5230\u53e6\u5916\u4e00\u4e2a\u5b8c\u6574\u9886\u57df\u7684\u77e5\u8bc6\u3002\u4f8b\u5982\u672c\u6587\u8981\u4ecb\u7ecd\u7684\u8fd9\u5c5e\u6027<code>tabindex<\/code>\u548c\u4e0b\u4e00\u7bc7\u8981\u4ecb\u7ecd\u7684<code>accesskey<\/code>\uff0c\u4e0eweb\u7f51\u9875\u65e0\u969c\u788d\u8bbf\u95ee\u606f\u606f\u76f8\u5173\uff0c\u800c\u4e14\u662f\u952e\u76d8\u8bbf\u95ee\u9886\u57df\u7684\u3002<\/p>\n<p>\u8fd9\u4e9b\u5c5e\u6027\u4e0d\u4ec5\u53ef\u4ee5\u89e6\u53d1\u6d4f\u89c8\u5668\u5c42\u9762\u7684\u884c\u4e3a\uff0c\u672c\u8eab\u5bf9HTML\u7684\u5143\u7d20\u7684\u4ea4\u4e92\u7279\u6027\u751a\u81f3UI\u8868\u73b0\u90fd\u4f1a\u6709\u5f71\u54cd\u3002<\/p>\n<h3>\u4e00\u3001HTML tabindex\u5c5e\u6027\u7684\u539f\u672c\u4f5c\u7528\uff0c\u884c\u4e3a\u4e0e\u8868\u73b0<\/h3>\n<p>HTML <code>tabindex<\/code>\u5c5e\u6027\u662f\u4e00\u4e2a\u201c\u5168\u5c40\u5c5e\u6027\u201d\uff0c\u6240\u8c13\u201c\u5168\u5c40\u5c5e\u6027\u201d\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u201c\u516c\u5171\u6c7d\u8f66\u5c5e\u6027\u201d\uff0c\u4e5f\u5c31\u662f\u6240\u6709HTML\u6807\u7b7e\u90fd\u53ef\u4ee5\u7528\u7684\u5c5e\u6027\uff0c\u6bd4\u65b9\u8bf4<code>id<\/code>\uff0c<code>class<\/code>\u5c5e\u6027\u7b49\u3002<\/p>\n<p>HTML <code>tabindex<\/code>\u5c5e\u6027\u662f\u4e00\u4e2a\u975e\u5e38\u8001\u7684\u5c5e\u6027\uff0c\u6d4f\u89c8\u5668\u652f\u6301\u591a\u5e74\uff0c\u57fa\u672c\u7279\u6027\u6ca1\u6709\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u8001\u5c11\u7686\u5b9c\uff0c\u7ae5\u53df\u65e0\u6b3a\uff0c\u653e\u5fc3\u4f7f\u7528\u3002<\/p>\n<p>HTML <code>tabindex<\/code>\u5c5e\u6027\u662f\u4e00\u4e2a\u4e0e\u952e\u76d8\u8bbf\u95ee\u884c\u4e3a\u606f\u606f\u76f8\u5173\u7684\u5c5e\u6027\uff0c\u6216\u8005\u6362\u79cd\u8bf4\u6cd5\u5427\uff0c\u662f\u4e2a\u7528\u6237\u4f53\u9a8c\u606f\u606f\u76f8\u5173\u7684\u5c5e\u6027\u3002\u5e73\u5e38\u6211\u4eec\u53ef\u80fd\u611f\u89c9\u4e0d\u5230\u5b83\u7684\u4ef7\u503c\uff0c\u4f46\u662f\u4e00\u65e6\u6211\u4eec\u7684\u9f20\u6807\u574f\u6389\u4e86\u6216\u8005\u6ca1\u7535\u4e86\uff0c\u6211\u4eec\u5c31\u53ea\u80fd\u4f7f\u7528\u952e\u76d8\u3002\u4ea6\u6216\u8005\u5728\u7535\u89c6\u673a\u4e0a\uff0c\u6216\u8005\u6295\u5f71\u8bbe\u5907\u4e0a\u8bbf\u95ee\u6211\u4eec\u7684\u7f51\u9875\u7684\u65f6\u5019\uff0c\u6211\u4eec\u53ea\u80fd\u4f7f\u7528\u9065\u63a7\u5668\u3002\u5c31\u7b97\u8bbe\u5907\u90fd\u5b8c\u5168\u6b63\u5e38\uff0c\u5bf9\u4e8e\u8d44\u6df1\u7528\u6237\u800c\u8a00\uff0c\u952e\u76d8\u8bbf\u95ee\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6211\u4eec\u7684\u4f7f\u7528\u6548\u7387\uff0c\u4f8b\u5982\u8868\u5355\u56de\u8f66\u63d0\u4ea4\uff0c\u4e0b\u62c9\u5217\u8868\u7684\u4e0a\u4e0b\u952e\u9009\u53d6\u7b49\uff0c\u5c31\u50cf\u300a\u5168\u804c\u9ad8\u624b\u300b\u91cc\u9762\u7684\u53f6\u4fee\u4e00\u6837\uff0c\u7528\u9f20\u6807\u7528\u952e\u76d8\uff0c\u5c24\u5176\u952e\u76d8\u624b\u901f\u73a9\u7684\u98de\u8d77\u3002<\/p>\n<p>\u4e0b\u9762\u6765\u7b80\u5355\u89e3\u91ca\u4e00\u4e0b\uff0c\u4e3a\u4ec0\u4e48<code>tabindex<\/code>\u88ab\u79f0\u4f5c<code>tabindex<\/code>\uff1f<\/p>\n<p><code>tabindex<\/code>\u5176\u5b9e\u53ef\u4ee5\u770b\u6210\u662f\u4e00\u4e2a\u5355\u8bcd\u7ec4\u5408\uff0c\u5c31\u662f<code>tab + index<\/code>\uff0c<code>tab<\/code>\u6307\u7684\u5c31\u662f\u952e\u76d8\u4e0a\u7684Tab\u952e\uff0c\u5982\u4e0b\u56fe\uff08\u672c\u4eba\u952e\u76d8\u5b9e\u62cd\uff0c\u8bf7\u5ffd\u7565\u5c81\u6708\u7684\u75d5\u8ff9\uff09\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201705\/tab-key.jpg\" width=\"240\" height=\"169\" alt=\"Tab\u952e\u7167\u7247\u622a\u56fe\" class=\"alignnone\" \/><\/p>\n<p>\u4ed4\u7ec6\u89c2\u5bdf\u53ef\u4ee5\u53d1\u73b0Tab\u952e\u4e0a\u9664\u4e86\u6709\u5b57\u6bcdTab\u8fd8\u6709\u5de6\u53f3\u7bad\u5934\u6307\u5411\u56fe\u5f62\uff0c\u5176\u5b9e\u5df2\u7ecf\u9690\u9690\u900f\u9732\u51fa\u4e86\u8fd9\u4e2a\u952e\u7684\u4f5c\u7528\uff0c\u5bf9<code>focusable<\/code>\u5143\u7d20\u8fdb\u884c\u7d22\u5f15\u5207\u6362\u3002<\/p>\n<p>\u81f3\u4e8e<code>index<\/code>\u5c31\u66f4\u597d\u7406\u89e3\u4e86\uff0c\u6211\u4eec\u904d\u5386\u6570\u7ec4\u7684\u65f6\u5019\uff0c\u6216\u8005\u6570\u636e\u5e93\u4e2d\u90fd\u4f1a\u6709<code>index<\/code>\u8fd9\u4e2a\u4e1c\u897f\uff0c\u8868\u793a\u201c\u7d22\u5f15\u201d\uff0c\u4e00\u822c\u90fd\u662f\u6570\u503c\uff0c\u8868\u793a\u5f53\u524d\u5185\u5bb9\u662f\u7b2c\u51e0\u4e2a\u7b2c\u51e0\u4e2a\u7b2c\u51e0\u4e2a\u3002<\/p>\n<p>\u6240\u4ee5<code>tabindex<\/code>\u8868\u793a\u7684\u610f\u601d\u5c31\u662f\u201c\u5143\u7d20\u4f7f\u7528Tab\u952e\u8fdb\u884cfocus\u65f6\u5019\u7684\u987a\u5e8f\u503c\u201d\uff0c\u56e0\u6b64\uff0c\u7406\u8bba\u4e0a\uff0c<code>tabindex<\/code>\u5c5e\u6027\u503c\u53ea\u80fd\u662f\u6570\u503c\u3002\u4f46\u662f\u5b9e\u9645\u7684\u8868\u73b0\u5374\u6709\u5dee\u5f02\uff0c\u5728Firefox\u6d4f\u89c8\u5668\u4e0b\uff0c<code>tabindex<\/code>\u5c5e\u6027\u503c\u7f3a\u7701\uff0c\u6216\u8005\u5c5e\u6027\u503c\u975e\u6570\u503c\uff0c\u4f8b\u5982<code>tabindex=\"xxx\"<\/code>\uff0c\u5176\u884c\u4e3a\u8868\u73b0\u7b49\u540c\u4e8e\u8bbe\u7f6e\u4e86<code>tabindex=\"-1\"<\/code>\uff0c\u800cIE\u548cChrome\u5219\u5ffd\u7565\u8be5\u5c5e\u6027\u3002<\/p>\n<p><code>tabindex<\/code>\u652f\u6301\u6b63\u503c\u548c\u8d1f\u503c\uff0c\u4f46\u662f\u5bf9\u8d1f\u503c\u800c\u8a00\uff0c\u6ca1\u6709\u4efb\u4f55\u7406\u7531\u4f7f\u7528<code>-1<\/code>\u4ee5\u5916\u7684\u5176\u5b83\u5c5e\u6027\u503c\u3002\u8fd9\u5e76\u4e0d\u662f\u8bf4\u5176\u5b83\u8d1f\u503c\u5c31\u4e0d\u8d77\u4f5c\u7528\uff0c\uff0c\u4f5c\u7528\u8fd8\u662f\u6709\u7684\uff0c\u53ea\u662f\u6ca1\u6709\u610f\u4e49\uff0c\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u8bf4\u5462\uff1f<\/p>\n<p>\u5f53\u4e00\u4e2a\u5143\u7d20\u8bbe\u7f6e<code>tabindex<\/code>\u5c5e\u6027\u503c\u4e3a<code>-1<\/code>\u7684\u65f6\u5019\uff0c\u5143\u7d20\u4f1a\u53d8\u5f97<code>focusable<\/code>\uff0c\u6240\u8c13<code>focusable<\/code>\u6307\u7684\u662f\u5143\u7d20\u53ef\u4ee5\u88ab\u9f20\u6807\u6216\u8005JS <code>focus<\/code>\uff0c\u5728Chrome\u6d4f\u89c8\u5668\u4e0b\u8868\u73b0\u4e3a\u4f1a\u6709<code>outline<\/code>\u53d1\u5149\u6548\u679c\uff0cIE\u6d4f\u89c8\u5668\u4e0b\u662f\u865a\u6846\uff0c\u540c\u65f6\u80fd\u591f\u54cd\u5e94<code>focus<\/code>\u4e8b\u4ef6\u3002\u4f46\u662f\uff0c\u5374\u4e0d\u80fd\u88ab\u952e\u76d8<code>focus<\/code>\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201705\/2017-05-13_130251.png\" width=\"163\" height=\"36\" alt=\"tabindex\u8d1f\u503c\u5728outline\u4e0b\u7684\u6548\u679c\" class=\"alignnone\" \/><\/p>\n<p>\u8fd9\u79cd\u9f20\u6807\u53ef\u4ee5<code>focus<\/code>\uff0c\u4f46\u662f\u952e\u76d8\u5374\u4e0d\u80fd<code>focus<\/code>\u7684\u72b6\u6001\uff0c\u53ea\u8981<code>tabindex<\/code>\u5c5e\u6027\u503c\u4e3a\u8d1f\u503c\uff0c\u56e0\u6b64\uff0c<code>tabindex=\"-2\"<\/code>\u548c<code>tabindex=\"-1\"<\/code>\u6ca1\u6709\u4efb\u4f55\u672c\u8d28\u533a\u522b\uff0c\u65e2\u7136\u5982\u6b64\uff0c\u90a3\u5c31\u6ca1\u6709\u5fc5\u8981\u5192\u9669\u5728\u73a9\u7c7b\u4f3c<code>tabindex=\"-2\"<\/code>\u7684\u65b0\u82b1\u6837\uff0c\u4e07\u4e00\u54ea\u5929\u6d4f\u89c8\u5668\u8ba4\u4e3a\u8fd9\u79cd\u7528\u6cd5\u662f\u4e0d\u5408\u6cd5\u7684\u5462\uff1f\u5728JavaScript\u4e2d\uff0c\u5b57\u7b26\u4e32\u548c\u6570\u7ec4\u90fd\u6709<code>indexOf<\/code>\u65b9\u6cd5\uff0c\u5f53\u65e0\u6cd5\u5339\u914d\u7684\u65f6\u5019\u8fd4\u56de\u7684\u503c\u5c31\u662f<code>-1<\/code>\uff0c\u5bf9\u5427\uff0c\u8db3\u591f\u4e86\uff0c\u5e76\u6ca1\u6709<code>-2<\/code>\u4e4b\u7c7b\u7684\u8fd4\u56de\u503c\uff0c\u548c<code>tabindex<\/code>\u7684\u8def\u6570\u5176\u5b9e\u662f\u4e00\u81f4\u7684\u3002<\/p>\n<p>\u5728<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTML\/Global_attributes\/tabindex\" target=\"_blank\" rel=\"nofollow\">MDN\u6587\u6863<\/a>\u4e0a\u6709\u8fd9\u4e48\u4e00\u53e5\u8bdd\uff1a<\/p>\n<blockquote><p>Note: The maximum value for tabIndex should not exceed 32767. If not specified, it takes the default value -1.<\/p><\/blockquote>\n<p>\u6211\u7ffb\u8bd1\u4e0b\u5c31\u662f\uff1a<code>tabindex<\/code>\u5c5e\u6027\u503c\u7684\u6700\u5927\u503c\u4e0d\u80fd\u8d85\u8fc7<code>32767<\/code>\u3002\u5982\u679c<code>tabindex<\/code>\u7f3a\u7701\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c<code>-1<\/code>\u3002<\/p>\n<p>\u5176\u4e2d\u540e\u534a\u53e5\u7684\u8868\u8ff0\u4f3c\u4e4e\u4ec5Firefox\u6d4f\u89c8\u5668\u7b26\u5408\uff0c\u81f3\u4e8e\u524d\u534a\u53e5\u2026\u2026<\/p>\n<p>\u6211\u7279\u610f\u5728\u6211\u7535\u8111\u7684\u5404\u4e2a\u6d4f\u89c8\u5668\u4e0b\u6d4b\u8bd5\u4e86\u4e00\u4e0b\uff0c\u53d1\u73b0\u5f53\u8bbe\u7f6e\u7684<code>tabindex<\/code>\u8d85\u8fc7<code>32767<\/code>\u5230\u65f6\u5019\uff0c\u4e0d\u540c\u6d4f\u89c8\u5668\u4e0b\u7684\u8868\u73b0\u662f\u4e0d\u4e00\u6837\u7684\uff1a<\/p>\n<ul>\n<li>\u5728IE\u6d4f\u89c8\u5668\u4e0b\uff0c\u5982\u679c<code>tabindex<\/code>\u503c\u6b63\u597d\u8d85\u51fa\u6700\u5927\u9650\u5236\uff0c\u4e5f\u5c31\u662f<code>tabindex=\"32768\"<\/code>\u7684\u65f6\u5019\uff0c<code>tabindex<\/code>\u5c5e\u6027\u503c\u65e0\u6548\u88ab\u5ffd\u7565\uff1b\u4f46\u662f\u5982\u679c\u503c\u7ee7\u7eed\u5f80\u4e0a\u8d85\u51fa\uff0c\u4f8b\u5982<code>tabindex=\"32768\"<\/code>\u6216\u8005<code>tabindex=\"123456\"<\/code>\uff0c\u5176\u884c\u4e3a\u8868\u73b0\u548c<code>tabindex=\"-1\"<\/code>\u662f\u4e00\u81f4\u7684\uff0c\u53ef\u4ee5\u88ab\u9f20\u6807<code>focus<\/code>\u65e0\u6cd5\u88ab\u952e\u76d8<code>focus<\/code>\uff0c\u771f\u662f\u975e\u5e38\u602a\u5f02\u7684\u8868\u73b0\u3002<\/li>\n<li>\u5728Firefox\u548cChrome\u6d4f\u89c8\u5668\u4e0b\uff0c\u5982\u679c<code>tabindex<\/code>\u503c\u6b63\u597d\u8d85\u51fa\u6700\u5927\u9650\u5236\uff0c\u5c31\u8ddf\u5b8c\u5168\u6ca1\u4e8b\u4f3c\u7684\uff0c\u53ef\u4ee5\u9f20\u6807<code>focus<\/code>\u4e5f\u80fd\u952e\u76d8<code>focus<\/code>\u3002\u51fa\u73b0\u8fd9\u79cd\u73b0\u8c61\u6709\u4e24\u79cd\u53ef\u80fd\uff1a\u4e00\u662fFirefox\u548cChrome\u6ca1\u6709<code>32767<\/code>\u7684\u9650\u5236\uff0c\u4e8c\u662f\u6709<code>32767<\/code>\u9650\u5236\uff0c\u4f46\u662f\u6d4f\u89c8\u5668\u6309\u7167\u6700\u5927\u503c<code>32767<\/code>\u8fdb\u884c\u89e3\u6790\u4e86\u3002\u7a76\u7adf\u662f\u54ea\u4e00\u79cd\u53ef\u80fd\u5462\uff1f\u7ecf\u8fc7\u6211\u7684\u6d4b\u8bd5\uff0c\u53d1\u73b0\u662f\u7b2c\u4e00\u79cd\u53ef\u80fd\uff0cFirefox\u548cChrome\u6ca1\u6709<code>32767<\/code>\u7684\u9650\u5236\uff0c\u6216\u8005\u6709\u9650\u5236\uff0c\u4f46\u662f\u7edd\u5bf9\u6bd4<code>32767<\/code>\u8981\u5927\u3002\u6d4b\u8bd5\u65b9\u6cd5\u5f88\u7b80\u5355\uff1a\n<pre>&lt;div tabindex=\"32769\"&gt;tabindex=\"32769\"&lt;\/div&gt;\r\n&lt;div tabindex=\"32768\"&gt;tabindex=\"32768\"&lt;\/div&gt;\r\n&lt;div tabindex=\"32767\"&gt;tabindex=\"32767\"&lt;\/div&gt;\r\n&lt;div tabindex=\"32766\"&gt;tabindex=\"32766\"&lt;\/div&gt;<\/pre>\n<p>\u4f7f\u7528Tab\u952e\u8fdb\u884c<code>focus<\/code>\u5207\u6362\uff0c\u770b\u987a\u5e8f\u3002\u6700\u540e\u6d4b\u8bd5\u7ed3\u679c\u662f<code>outline<\/code>\u662f\u4ece\u4e0b\u5f80\u4e0a\u4f9d\u6b21\u51fa\u73b0\u7684\u3002<\/li>\n<\/ul>\n<p><strong>\u8ba4\u8bc6tabindex=&#8221;0&#8243;<\/strong><br \/>\n\u6211\u5148\u629b\u4e00\u4e2a\u95ee\u9898\u95ee\u95ee\u5927\u5bb6\uff0c\u5982\u4e0b\u4e24\u4e2a<code>&lt;div&gt;<\/code>\uff0c\u8bf7\u95ee\uff0c\u5f53\u4f7f\u7528Tab\u952e\u8fdb\u884c\u7d22\u5f15\u7684\u65f6\u5019\uff0c\u54ea\u4e2a\u5148\u88ab<code>focus<\/code>\uff1f\u54ea\u4e2a\u540e\u88ab<code>focus<\/code>\uff1f<\/p>\n<pre>&lt;div tabindex=\"0\"&gt;tabindex=\"0\"&lt;\/div&gt;\r\n&lt;div tabindex=\"1\"&gt;tabindex=\"1\"&lt;\/div&gt;<\/pre>\n<p><span class=\"s\">\/\/zxx: \u5047\u8bbe\u4e09\u5206\u949f\u8fc7\u53bb\u4e86&#8230;<\/span><\/p>\n<p>\u4e00\u5b9a\u6709\u5f88\u591a\u5f88\u591a\u5c0f\u4f19\u4f34\u4f1a\u8ba4\u4e3a\u7b2c\u4e00\u4e2a<code>&lt;div&gt;<\/code>\u9996\u5148\u88ab<code>focus<\/code>\uff0c\u7136\u540e\u624d\u662f\u7b2c\u4e8c\u4e2a<code>&lt;div&gt;<\/code>\uff0c\u56e0\u4e3a<code>0<\/code>\u6bd4<code>1<\/code>\u5c0f\uff0c\u7d22\u5f15\u7684\u987a\u5e8f\u4e5f\u81ea\u7136\u66f4\u52a0\u7684\u9760\u524d\u3002<\/p>\n<p>\u4f46\u5b9e\u9645\u4e0a\uff0c\u6240\u6709\u6d4f\u89c8\u5668\u90fd\u662f\u7b2c\u4e8c\u4e2a<code>&lt;div&gt;<\/code>\u5148\u88ab<code>focus<\/code>\uff0c\u7136\u540e\u624d\u662f\u7b2c\u4e00\u4e2a<code>&lt;div&gt;<\/code>\uff01<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201705\/timg-ask.jpg\" width=\"150\" height=\"105\" alt=\"\u9ed1\u4eba\u95ee\u53f7\" class=\"alignnone\" \/><\/p>\n<p>\u4e0d\u8981\u6446\u51fa\u4e0a\u9762\u7684\u8868\u60c5\uff0c\u4e8b\u5b9e\u5c31\u662f\u5982\u6b64\u3002<\/p>\n<p><code>tabindex<\/code>\u5c5e\u6027\u7684\u952e\u76d8\u7d22\u5f15\u987a\u5e8f\u5176\u5b9e\u662f\u4ece\u6570\u503c<code>1<\/code>\u5f00\u59cb\u7684\uff0c\u4e0d\u662f<code>0<\/code>\uff0c<code>1<\/code>\u7d22\u5f15\u987a\u5e8f\u662f\u6700\u9760\u524d\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\u54ea\u6015\u4f60\u5728\u9875\u9762\u7684\u6700\u5e95\u90e8\u3001\u6587\u6863\u6d41\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e86<code>tabindex=\"1\"<\/code>\uff0c\u5f53\u6309\u4e0bTab\u952e\u7684\u65f6\u5019\uff0c\u9996\u5148<code>focus<\/code>\u5c31\u662f\u8fd9\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n<p><strong>\u66f4\u65b0\u4e8e2023-03-13<\/strong><\/p>\n<p>\u6839\u636e\u6d4b\u8bd5\uff0c\u76ee\u524d\u6d4f\u89c8\u5668\u7684tabindex\u7d22\u5f15\u884c\u4e3a\u5df2\u7ecf\u53d1\u5c55\u4e86\u53d8\u5316\uff0c\u81ea\u7136\u6570\u7684tabindex\u7684\u7d22\u5f15\u5c5e\u6027\u4e0d\u518d\u662f\u6700\u9760\u524d\uff0c\u800c\u662f\u6700\u9760\u540e\uff0c\u6bd4\u6d4f\u89c8\u5668\u7a97\u4f53\u81ea\u8eab\u7684\u63a7\u4ef6\u5143\u7d20\u7684focus\u987a\u5e8f\u8fd8\u8981\u9760\u540e\u3002<\/p>\n<p>\u8868\u73b0\u4e3a\uff1a<\/p>\n<p><code>tabindex=\"0\"<\/code>\u88abfocus\uff0c\u968f\u540e\u6d4f\u89c8\u5668\u81ea\u8eab\u5404\u4e2a\u6309\u94ae\u548c\u5730\u5740\u680f\u88abfocus\uff0c\u7136\u540e\u624d\u662f<code>tabindex=\"1\"<\/code>\u3002<\/p>\n<p><code>tabindex=1<\/code>\u5143\u7d20 Tab \u540e\u662f 0\uff0c <code>tabindex=\"0\"<\/code> \u6309\u4e0bshift+tab\u952e\u540e\u662f 1\u3002<\/p>\n<p>\u4ee5\u53ca<code>tabindex=2<\/code>\u5143\u7d20\u4e00\u5b9a\u662f\u6bd4<code>tabindex=1<\/code>\u5143\u7d20\u7684\u7d22\u5f15\u503c\u9760\u540e\u7684\u3002<\/p>\n<p><span class=\"s\">&#8212; \u66f4\u65b0end &#8212;-<\/span><\/p>\n<p>\u90a3<code>tabindex=\"0\"<\/code>\u53c8\u662f\u600e\u4e48\u56de\u4e8b\u5462\uff1f<\/p>\n<p>\u524d\u6587\u8bf4\u8fc7\uff0c\u5143\u7d20\u8bbe\u7f6e<code>tabindex=\"-1\"<\/code>\uff0c\u53ef\u4ee5\u9f20\u6807\u548cJS\u53ef\u4ee5<code>focus<\/code>\uff0c\u4f46\u952e\u76d8\u4e0d\u80fd<code>focus<\/code>\uff1b<code>tabindex=\"0\"<\/code>\u548c<code>tabindex=\"-1\"<\/code>\u7684\u552f\u4e00\u533a\u522b\u5c31\u662f\u952e\u76d8\u4e5f\u80fd<code>focus<\/code>\uff0c\u7d22\u5f15\u7684\u987a\u5e8f\u6ca1\u6709\u4efb\u4f55\u7684\u53d8\u5316\u3002\u6216\u8005\u4f60\u53ef\u4ee5\u8fd9\u4e48\u7406\u89e3\uff0c<code>&lt;div&gt;<\/code>\u8bbe\u7f6e\u4e86<code>tabindex=\"0\"<\/code>\uff0c\u4ece\u952e\u76d8\u8bbf\u95ee\u7684\u89d2\u5ea6\u6765\u8bb2\uff0c\u76f8\u5bf9\u4e8e<code>&lt;div&gt;<\/code>\u5143\u7d20\u53d8\u6210\u4e86<code>&lt;button&gt;<\/code>\u5143\u7d20\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u662f\u53ef\u4ee5\u4f7f\u7528<code>&lt;div&gt;<\/code>\u6216\u8005<code>&lt;span&gt;<\/code>\u5143\u7d20\u6a21\u62df\u6309\u94ae\u7684\uff0c\u4f46\u662f\u5343\u4e07\u4e0d\u80fd\u5fd8\u8bb0\u8bbe\u7f6e<code>tabindex<\/code>\u5c5e\u6027\uff0c\u5982\u4e0b\u793a\u610f\uff1a<\/p>\n<pre>&lt;div class=\"button\" tabindex=\"0\" role=\"button\"&gt;\u6309\u94ae&lt;\/div&gt;<\/pre>\n<p>\u5982\u679c\u4f60\u662f<code>tabindex<\/code>\u5c5e\u6027\u91cd\u5ea6\u4f7f\u7528\u60a3\u8005\uff0c\u514d\u4e0d\u4e86\u4f1a\u9047\u5230<code>tabindex<\/code>\u5c5e\u6027\u503c\u4e00\u6837\u7684\u60c5\u51b5\uff0c\u8fd9\u65f6\u5019\u7684\u7d22\u5f15\u5c5e\u6027\u662f\u600e\u6837\u7684\u5462\uff1f<\/p>\n<p>\u6b64\u65f6\u987a\u5e8f\u662f\u6839\u636eDOM\u5143\u7d20\u5728\u6587\u6863\u4e2d\u7684\u4f4d\u7f6e\u51b3\u5b9a\u7684\uff0c\u8d8a\u9760\u524d\u8d8a\u5916\u5c42\u7684\u5143\u7d20\u7d22\u5f15\u987a\u5e8f\u66f4\u9ad8\u3002<\/p>\n<p>\u597d\uff0c\u4ee5\u4e0a\u5c31\u662fHTML <code>tabindex<\/code>\u7b49\u4e00\u4e9b\u57fa\u7840\u77e5\u8bc6\u3002\u6211\u7ecf\u5e38\u8ddf\u65b0\u4eba\u524d\u7aef\u5c0f\u4f19\u4f34\u7b54\u7591\u7684\u65f6\u5019\u8bb2\uff0c\u5f53\u52a1\u4e4b\u6025\u4e0d\u7528\u8ffd\u98ce\u9010\u5f71\uff0c\u800c\u662f\u60f3\u529e\u6cd5\u624e\u5b9e\u57fa\u7840\u3002\u6bd4\u5982\u8bf4\u4e0a\u9762\u4e00\u6574\u8282\u90fd\u662f\u57fa\u7840\u77e5\u8bc6\uff0c\u53ea\u6709\u4f60\u7684\u57fa\u7840\u77e5\u8bc6\u624e\u5b9e\u4e86\uff0c\u4f60\u624d\u80fd\u9ad8\u5c4b\u5efa\u74f4\uff0c\u4e3e\u4e00\u53cd\u4e09\uff0c\u5e76\u5728\u5b9e\u9645\u9879\u76ee\u5f00\u53d1\u4e2d\u81ea\u5982\u5e94\u7528\u3002<\/p>\n<h3>\u4e8c\u3001HTML tabindex\u7684\u4f7f\u7528\u573a\u666f<\/h3>\n<p>\u5728\u901a\u5e38\u7684web\u5f00\u53d1\u4e2d\uff0c\u4f60\u53ea\u8981\u4e0d\u72af\u4e00\u4e9bHTML\u5e38\u8bc6\u6027\u9519\u8bef\uff0c\u4f8b\u5982\u4f7f\u7528<code>&lt;div&gt;<\/code>\u6216\u8005<code>&lt;span&gt;<\/code>\u5143\u7d20\u4f5c\u4e3a\u6309\u94ae\uff0c\u6216\u8005\u5168\u5c40\u53bb\u9664<code>outline<\/code>\u7684\u9519\u8bef\uff0c<code>tabindex<\/code>\u5c5e\u6027\u5c31\u7b97\u4e0d\u51fa\u573a\uff0c\u7f51\u7ad9\u7684\u952e\u76d8\u65e0\u969c\u788d\u8bbf\u95ee\u652f\u6301\u5df2\u7ecf\u53ca\u683c\u4e86\u3002<\/p>\n<p>\u5982\u679c\u60f3\u66f4\u8fdb\u4e00\u6b65\uff0c\u53ef\u4ee5\u589e\u52a0CSS <code>:focus<\/code>\u6216JS <code>focus<\/code>\u4e8b\u4ef6\u7684\u4ea4\u4e92\u652f\u6301\uff0c\u5177\u4f53\u53ef\u53c2\u8003\u4e0d\u4e45\u524d\u6211\u7684\u8fd9\u7bc7\u6587\u7ae0\uff1a\u201c<a href=\" http:\/\/www.zhangxinxu.com\/wordpress\/?p=6102\">CSS :focus\u4f2a\u7c7bJS focus\u4e8b\u4ef6\u63d0\u9ad8\u7f51\u7ad9\u952e\u76d8\u53ef\u8bbf\u95ee\u6027<\/a>\u201d\u3002<\/p>\n<p>\u4f46\u662f\u4ec5\u4ec5\u989d\u5916\u589e\u52a0\u4e8b\u4ef6\u652f\u6301\uff0c\u5e76\u4e0d\u80fd\u8ba9\u7f51\u7ad9<code>100%<\/code>\u952e\u76d8\u652f\u6301\uff0c\u6216\u8005\u8bf4\u53ef\u4ee5<code>100%<\/code>\u652f\u6301\uff0c\u4f46\u4ea4\u4e92\u548c\u4f53\u9a8c\u4e0d\u4e00\u5b9a\u5b8c\u7f8e\uff0c\u6b64\u65f6\u53ef\u80fd\u5c31\u8981\u8f6e\u5230<code>tabindex<\/code>\u5c5e\u6027\u51fa\u9a6c\u4e86\uff01<\/p>\n<p><strong>\u573a\u666f\u4e00\uff1a<code>hover<\/code> <code>&lt;div&gt;<\/code>\u663e\u793a\u4e0b\u62c9\u952e\u76d8\u652f\u6301<\/strong><br \/>\n\u8fd9\u662f\u7f51\u9875\u4e2d\u975e\u5e38\u5e38\u89c1\u7684\u4e00\u79cd\u4ea4\u4e92\uff0c\u5f53\u6211\u4eec\u5185\u5bb9\u6bd4\u8f83\u9759\u6001\u7684\u65f6\u5019\uff0c\u5e38\u5e38\u76f4\u63a5\u4f7f\u7528CSS <code>:hover<\/code>\u4f2a\u7c7b\u5b9e\u73b0\u5185\u5bb9\u7684\u663e\u9690\u6548\u679c\uff0c\u901a\u5e38\uff0c\u6211\u4eec\u90fd\u4f1a\u4f7f\u7528\u4e00\u4e2a\u5927\u5927\u7684<code>&lt;div&gt;<\/code>\u5143\u7d20\u5305\u5728\u5916\u9762\uff0c\u4ece\u529f\u80fd\u4e0a\u8bb2\uff0c\u4f3c\u4e4e\u6ee1\u8db3\u4e86\u6211\u4eec\u7684\u9700\u6c42\uff0c\u4f46\u5b9e\u9645\u4e0a\uff0c\u5bf9\u952e\u76d8\u4ee5\u53ca\u5176\u5b83\u8f85\u52a9\u8bbe\u5907\u7684\u8bbf\u95ee\u5374\u4e0d\u53cb\u597d\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u9690\u85cf\u7684\u4e0b\u62c9\u5185\u5bb9\u53ea\u80fd\u901a\u8fc7\u9f20\u6807\u64cd\u4f5c\u663e\u793a\uff0c\u952e\u76d8\u6c38\u8fdc\u663e\u793a\u4e0d\u51fa\u6765\uff0c\u81ea\u7136\u5c4f\u5e55\u9605\u8bfb\u5668\u7b49\u8f85\u52a9\u8bbe\u5907\u4e5f\u4e0d\u80fd\u8bfb\u53d6\uff0c\u6b64\u65f6\uff0c\u5c31\u8f6e\u5230<code>tabindex<\/code>\u5c5e\u6027\u6765\u63d0\u9ad8\u6211\u4eec\u7ad9\u70b9\u7684\u53ef\u8bbf\u95ee\u6027\u4e86\u3002\u5c31\u662f\u7ed9<code>&lt;div&gt;<\/code>\u52a0\u4e00\u4e2a<code>tabindex=\"0\"<\/code>\uff0c\u5bf9\u5427\uff0c\u5c0f\u624b\u4e00\u6296\uff0c\u4f53\u9a8c\u5c31\u6709\uff0c\u7686\u5927\u6b22\u559c\uff0c\u4f55\u4e50\u4e0d\u4e3a\uff01\u7136\u540e\u518d\u52a0\u4e2a<code>:focus<\/code>\u4f2a\u7c7b\u663e\u793a\u4e0b\u62c9\u5185\u5bb9\u5c31\u597d\u4e86\uff01\u90fd\u662f\u4e3e\u624b\u4e4b\u52b3\u7684\u4e8b\u60c5\u3002<\/p>\n<p><strong>\u573a\u666f\u4e8c\uff1a\u5bf9\u7f51\u7ad9\u6a21\u5757\u8fdb\u884c\u81ea\u5b9a\u4e49\u7684\u952e\u76d8\u652f\u6301<\/strong><br \/>\n\u5199\u6587\u7ae0\u8fd9\u4e48\u591a\u5e74\uff0c\u7b2c\u4e00\u6b21\u62ff\u65b0\u6d6a\u5fae\u535a\u505a\u6b63\u9762\u7684\u4f8b\u5b50\u3002\u867d\u7136\u8bf4\u65b0\u6d6a\u5fae\u535aPC\u7aef\u6700\u91cd\u8981\u7684\u5fae\u535a\u9875\uff0c\u52a0\u8f7d\u6162\u6027\u80fd\u5dee\uff0c\u4f46\u662f\uff0c\u6570\u5e74\u524d\u5374\u4e13\u95e8\u589e\u52a0\u4e86\u81ea\u5b9a\u4e49\u7684\u952e\u76d8\u8bbf\u95ee\u652f\u6301\uff0c\u6bd4\u65b9\u8bf4\u6309\u4e0b\u952e\u76d8\u4e0a\u7684J\u952e\uff0c\u5219\u4f1a\u81ea\u52a8\u7d22\u5f15\u6bcf\u6761\u5fae\u535a\u4fe1\u606f\uff0c\u5e76\u4f7f\u7528JS\u8fdb\u884c<code>focus<\/code>\u9ad8\u4eae\uff0c\u5982\u4e0b\u622a\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201705\/2017-05-13_214018.png\" width=\"609\" height=\"260\" alt=\"\u952e\u76d8J\u7d22\u5f15\u9ad8\u4eae\u622a\u56fe\u6548\u679c\" class=\"alignnone\" \/><\/p>\n<p>\u5176\u539f\u7406\u5c31\u662f\u8bbe\u7f6e<code>tabindex=\"-1\"<\/code>\u7136\u540e\u4f7f\u7528JS\u8fdb\u884c<code>focus<\/code>\uff0c\u5982\u4e0bJS\u793a\u610f\uff1a<\/p>\n<pre>div.setAttribute('tabindex', '-1');\r\ndiv.focus();<\/pre>\n<p>\u7531\u4e8e\u8bbe\u7f6e\u4e86<code>tabindex=\"-1\"<\/code>\u7684\u5143\u7d20\u9f20\u6807\u70b9\u51fb\u53ef\u4ee5<code>focus<\/code>\u5e76<code>outline<\/code>\u8f6e\u5ed3\u663e\u793a\uff0c\u56e0\u6b64\uff0c\u8fd9\u91cc\u7684<code>tabindex=\"-1\"<\/code>\u5e76\u4e0d\u662f\u9ed8\u8ba4\u5c31\u6709\uff0c\u800c\u662f\u6309\u4e0b\u5bf9\u5e94\u7684\u5feb\u6377\u952e\u540e\u4e34\u65f6\u52a8\u6001\u6dfb\u52a0\u7684\u3002<\/p>\n<p><strong>\u573a\u666f\u4e09\uff1a\u4e34\u65f6\u6539\u53d8\u9875\u9762\u7d22\u5f15\u8d77\u59cb\u4f4d\u7f6e<\/strong><br \/>\n\u5f53\u6211\u4eec\u70b9\u51fb\u6309\u94ae\u5e76\u663e\u793a\u4e00\u4e2a\u5f39\u6846\u7684\u65f6\u5019\uff0cTab\u952e\u7684\u7d22\u5f15\u8d77\u59cb\u4f4d\u7f6e\u5e94\u8be5\u662f\u4ece\u5f39\u6846\u5143\u7d20\u5f00\u59cb\u7684\uff0c\u4f46\u662f\u5982\u679c\u6211\u4eec\u4e0d\u505a\u4efb\u4f55\u5904\u7406\uff0c\u7d22\u5f15\u8d77\u59cb\u4f4d\u7f6e\u8fd8\u662f\u5f39\u6846\u80cc\u540e\u7684\u9875\u9762\uff0c\u6b64\u65f6\u60f3\u8981\u901a\u8fc7Tab\u952e\u4e00\u4e2a\u4e00\u4e2a\u7d22\u5f15\u5230\u5f39\u6846\u5143\u7d20\uff0c\u4f30\u8ba1\u5929\u90fd\u5df2\u7ecf\u9ed1\u4e86\uff0c\u5f88\u663e\u7136\uff0c\u4e3a\u4e86\u8fbe\u5230\u5b8c\u7f8e\u7684\u952e\u76d8\u4ea4\u4e92\u4f53\u9a8c\uff0c\u6211\u4eec\u5c31\u9700\u8981\u989d\u5916\u505a\u70b9\u4e8b\u60c5\u3002<\/p>\n<ol>\n<li>\u7ed9\u5f39\u6846\u5bb9\u5668\u5143\u7d20\u8bbe\u7f6e<code>tabindex=\"-1\"<\/code>\uff1b<\/li>\n<li>\u5f39\u6846\u663e\u793a\u7684\u65f6\u5019\u5bb9\u5668\u5143\u7d20<code>DOM.focus()<\/code>\u4f7f\u5176\u83b7\u53d6\u7126\u70b9\uff1b<\/li>\n<li>\u5bb9\u5668\u5143\u7d20CSS\u8bbe\u7f6e<code>outline:none<\/code>\uff1b<\/li>\n<\/ol>\n<p>\u7b80\u7b80\u5355\u5355\u4e09\u6b65\u5373\u53ef\u5927\u529f\u544a\u6210\u3002<\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u7684\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/study\/201705\/dialog-tabindex.html\" target=\"_blank\">\u5f39\u6846\u51fa\u73b0\u4e0eTab\u952e\u7d22\u5f15\u8d77\u59cb\u4f4d\u7f6e\u53d8\u5316demo<\/a><\/p>\n<p>demo\u9875\u9762\u4e2d\uff0c\u70b9\u51fb\u6309\u94ae\u51fa\u73b0\u5f39\u6846\u540e\uff0c\u4f60\u518d\u6309\u4e00\u4e0bTab\u952e\uff0c\u4f1a\u53d1\u73b0\u7b2c\u4e00\u4e2a\u88ab<code>focus<\/code>\u7684\u662f\u5173\u95ed\u6309\u94ae\uff0c\u5982\u4e0b\u622a\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201705\/2017-05-13_224237.png\" width=\"358\" height=\"171\" alt=\"\u5173\u95ed\u6309\u94ae\u88abfocus\u65f6\u5019\u7684\u6837\u5f0f\" class=\"alignnone\" \/><\/p>\n<p>\u4f9d\u6b21Tab\uff0c\u5c31\u53ef\u4ee5<code>focus<\/code>\u5f39\u6846\u5185\u6240\u6709<code>focusable<\/code>\u5143\u7d20\u4e86\u3002<\/p>\n<h3>\u4e09\u3001HTML 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