{"id":388,"date":"2005-10-31T06:31:43","date_gmt":"2005-10-30T18:31:43","guid":{"rendered":""},"modified":"2005-10-31T06:31:43","modified_gmt":"2005-10-30T18:31:43","slug":"","status":"publish","type":"post","link":"https:\/\/www.mudone.com\/?p=388","title":{"rendered":"Alt\u5c5e\u6027\u548cTitle\u5c5e\u6027"},"content":{"rendered":"<p># \u539f\u6587\uff1a<a href=\"http:\/\/www.456bereastreet.com\/archive\/200412\/the_alt_and_title_attributes\/\" title=\"http:\/\/www.456bereastreet.com\/archive\/200412\/the_alt_and_title_attributes\/\" target=\"_blank\">http:\/\/www.456bereastreet.com\/archive\/200412\/the_alt_and_title_attributes\/<\/a><br \/>\n# \u7ffb\u8bd1\uff1aJunChen<br \/>\n# \u9996\u53d1\uff1a<a href=\"http:\/\/blog.handsbrain.com\/junchen\/archive\/2005\/05\/21\/3355.aspx\" title=\"http:\/\/blog.handsbrain.com\/junchen\/archive\/2005\/05\/21\/3355.aspx\" target=\"_blank\">http:\/\/blog.handsbrain.com\/junchen\/archive\/2005\/05\/21\/3355.aspx<\/a><br \/>\n# \u7248\u6743\uff1a\u672c\u6587\u7248\u6743\u5f52\u8bd1\u8005Junchen\u6240\u6709\uff0c\u8f6c\u8f7d\u8bf7\u5148\u8054\u7cfb\u8bd1\u8005\u3002<\/p>\n<p>\u5f53\u6d4f\u89c8\u5668\u5356\u4e3b\u626d\u66f2\u4e86\u6807\u51c6\u5e76\u4e14\u81ea\u987e\u81ea\u7684\u4e0d\u6309\u89c4\u5219\u53bb\u505a\u4e00\u4e9b\u4e8b\uff0c\u4ed6\u4eec\u53ef\u80fd\u4f1a\u9020\u6210\u4e00\u4e9b\u95ee\u9898\uff0c\u6216\u8005\u81f3\u5c11\u4ea7\u751f\u4e86\u6df7\u6dc6\u3002\u4f8b\u5b50\u4e4b\u4e00\u5c31\u662f\u4e00\u4e9b\u6d4f\u89c8\u5668\u5904\u7406alt\u5c5e\u6027\uff08\u4e00\u822c\u4f1a\u88ab\u9519\u8bef\u7684\u79f0\u4f5calt\u6807\u7b7e\uff09\u7684\u65b9\u5f0f\uff0c\u6bd4\u5982\u62e5\u6709\u5927\u91cf\u7528\u6237\u7684Windows\u7684IE\u6d4f\u89c8\u5668\u3002<\/p>\n<p>\u66ff\u6362\u6587\u5b57\uff08alt text\uff09\u5e76\u4e0d\u662f\u7528\u6765\u505a\u63d0\u793a\uff08tool tip\uff09\uff0c\u6216\u8005\u66f4\u52a0\u786e\u5207\u7684\u8bf4\uff0c\u5b83\u5e76\u4e0d\u662f\u4e3a\u56fe\u7247\u63d0\u4f9b\u989d\u5916\u8bf4\u660e\u4fe1\u606f\u7684\u3002\u76f8\u53cd\u5730\uff0ctitle\u5c5e\u6027\u624d\u5e94\u8be5\u7528\u6765\u4e3a\u5143\u7d20\u63d0\u4f9b\u989d\u5916\u8bf4\u660e\u4fe1\u606f\u3002\u8fd9\u4e9b\u4fe1\u606f\u5728\u5927\u90e8\u5206\u56fe\u50cf\u6d4f\u89c8\u5668\u91cc\u663e\u793a\u4e3a\u63d0\u793a\uff08tool <!--more-->tip\uff09\uff0c\u867d\u7136\u5236\u9020\u5546\u53ef\u4ee5\u4efb\u610f\u91c7\u53d6\u5176\u4ed6\u65b9\u5f0f\u6e32\u67d3title\u5c5e\u6027\u7684\u6587\u5b57\u3002<\/p>\n<p>\u5f88\u591a\u4eba\u770b\u6765\u5bf9\u8fd9\u4e24\u4e2a\u5c5e\u6027\u611f\u5230\u8ff7\u60d1\uff08\u6700\u8fd1\u8fd9\u4e2a\u95ee\u9898\u5728Web Standards Group\u90ae\u4ef6\u5217\u8868\u91cc\u53d8\u591a\u4e86\uff09\uff0c \u6240\u4ee5\u6211\u5199\u4e0b\u6211\u7684\u60f3\u6cd5\uff0c\u5982\u4f55\u53bb\u7528\u5b83\u4eec\u3002<\/p>\n<p>alt\u5c5e\u6027<\/p>\n<p>\u4e3a\u4e0d\u80fd\u663e\u793a\u56fe\u50cf\u3001\u7a97\u4f53\u6216applets\u7684\u7528\u6237\u4ee3\u7406\uff08UA\uff09\uff0calt\u5c5e\u6027\u7528\u6765\u6307\u5b9a\u66ff\u6362\u6587\u5b57\u3002\u66ff\u6362\u6587\u5b57\u7684\u8bed\u8a00\u7531lang\u5c5e\u6027\u6307\u5b9a\u3002<br \/>\n\u6765\u6e90\uff1aHow to specify alternate text.<\/p>\n<p>Alt\u5c5e\u6027\uff08\u6ce8\u610f\u662f\u201c\u5c5e\u6027\u201d\u800c\u4e0d\u662f\u201c\u6807\u7b7e\u201d\uff09\u5305\u62ec\u66ff\u6362\u8bf4\u660e\uff0c\u5bf9\u4e8e\u56fe\u50cf\u548c\u56fe\u50cf\u70ed\u70b9\u662f\u5fc5\u987b\u7684\u3002\u5b83\u53ea\u80fd\u7528\u5728img\u3001area\u548cinput\u5143\u7d20\u4e2d\uff08\u5305\u62ecapplet\u5143\u7d20\uff09\u3002\u5bf9\u4e8einput\u5143\u7d20\uff0calt\u5c5e\u6027\u610f\u5728\u7528\u6765\u66ff\u6362\u63d0\u4ea4\u6309\u94ae\u7684\u56fe\u7247\u3002\u6bd4\u5982\uff1a&lt;input type=&quot;image&quot; src=&quot;image.gif&quot; alt=&quot;Submit&quot; \/&gt;.<\/p>\n<p>\u4f7f\u7528alt\u5c5e\u6027\u662f\u4e3a\u4e86\u7ed9\u90a3\u4e9b\u4e0d\u80fd\u770b\u5230\u4f60\u6587\u6863\u4e2d\u56fe\u50cf\u7684\u6d4f\u89c8\u8005\u63d0\u4f9b\u6587\u5b57\u8bf4\u660e\u3002\u8fd9\u5305\u62ec\u90a3\u4e9b\u4f7f\u7528\u672c\u6765\u5c31\u4e0d\u652f\u6301\u56fe\u50cf\u663e\u793a\u6216\u8005\u56fe\u50cf\u663e\u793a\u88ab\u5173\u95ed\u7684\u6d4f\u89c8\u5668\u7684\u7528\u6237\uff0c\u89c6\u89c9\u969c\u788d\u7684\u7528\u6237\u548c\u4f7f\u7528\u5c4f\u5e55\u9605\u8bfb\u5668\u7684\u7528\u6237\u3002\u66ff\u6362\u6587\u5b57\u662f\u7528\u6765\u66ff\u4ee3\u56fe\u50cf\u800c\u4e0d\u662f\u63d0\u4f9b\u989d\u5916\u8bf4\u660e\u6587\u5b57\u7684\u3002<\/p>\n<p>\u5728\u5199\u66ff\u6362\u6587\u5b57\u524d\u4ed4\u7ec6\u60f3\u60f3\uff0c\u4fdd\u8bc1\u90a3\u4e9b\u6587\u5b57\u786e\u5b9e\u4e3a\u90a3\u4e9b\u770b\u4e0d\u5230\u56fe\u50cf\u7684\u4eba\u63d0\u4f9b\u4e86\u8bf4\u660e\u4fe1\u606f\uff0c\u5e76\u4e14\u5728\u4e0a\u4e0b\u6587\u4e2d\u6709\u610f\u4e49\u3002\u5bf9\u4e8e\u90a3\u4e9b\u88c5\u9970\u6027\u7684\u56fe\u7247\u53ef\u4ee5\u4f7f\u7528\u7a7a\u7684\u503c\uff08alt= &quot;&quot;\uff0c\u5f15\u53f7\u4e2d\u95f4\u6ca1\u6709\u7a7a\u683c\uff09\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u4e0d\u76f8\u5173\u7684\u66ff\u6362\u6587\u5b57\u6bd4\u5982\u201cblue bullet\u201d\u6216\u8005\u201cspacer.gif\u201d\u3002\u4e0d\u8981\u5ffd\u7565\u5b83\uff0c\u5982\u679c\u4f60\u5ffd\u7565\u4e86\uff0c\u90a3\u4e48\u4e00\u4e9b\u5c4f\u5e55\u9605\u8bfb\u5668\u4f1a\u76f4\u63a5\u9605\u8bfb\u56fe\u50cf\u6587\u4ef6\u7684\u6587\u4ef6\u540d\uff0c\u90a3\u4e9b\u6587\u5b57\u6d4f\u89c8\u5668\uff0c\u6bd4\u5982Lynx 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attribute.<\/p>\n<p>title\u5c5e\u6027\u53ef\u4ee5\u7528\u5728\u9664\u4e86base\uff0cbasefont\uff0chead\uff0chtml\uff0cmeta\uff0cparam\uff0cscript\u548ctitle\u4e4b\u5916\u7684\u6240\u6709\u6807\u7b7e\u3002\u4f46\u662f\u5e76\u4e0d\u662f\u5fc5\u987b\u7684\u3002\u53ef\u80fd\u8fd9\u6b63\u662f\u4e3a\u4ec0\u4e48\u5f88\u591a\u4eba\u4e0d\u660e\u767d\u4f55\u65f6\u4f7f\u7528\u5b83\u3002<\/p>\n<p>\u4f7f\u7528title\u5c5e\u6027\u63d0\u4f9b\u975e\u672c\u8d28\u7684\u989d\u5916\u4fe1\u606f\u3002\u5927\u90e8\u5206\u7684\u53ef\u89c6\u5316\u6d4f\u89c8\u5668\u5728\u9f20\u6807\u60ac\u6d6e\u5728\u7279\u5b9a\u5143\u7d20\u4e0a\u65f6\u663e\u793atitle\u6587\u5b57\u4e3a\u63d0\u793a\u4fe1\u606f\uff08tool 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text\uff09\u7cbe\u8981\u3002\u5728\u5927\u591a\u6570\u7684\u5e94\u7528\u91cc\uff0c\u90fd\u5e94\u8be5\u88ab\u7559\u767d\uff0calt=&quot;&quot;\uff08\u6ce8\u610f\u4e24\u5f15\u53f7\u4e2d\u6ca1\u6709\u7a7a\u683c\uff09\u3002\u60f3\u60f3\u90a3\u4e9b\u56fe\u50cf\uff0c\u4e3a\u90a3\u4e9b\u6d4f\u89c8\u8005\u63d0\u4f9b\u4e86\u4ec0\u4e48\u6837\u7684\u4fe1\u606f\uff0c\u4f60\u5e94\u8be5\u7528\u4ec0\u4e48\u6587\u5b57\u53bb\u63cf\u8ff0\u5b83\uff0c\u6216\u8005\u4f60\u8be5\u4e3a\u770b\u4e0d\u5230\u56fe\u50cf\u7684\u4eba\u63d0\u4f9b\u4ec0\u4e48\u4fe1\u606f\uff1f\u5c06\u66ff\u6362\u6587\u5b57\u5199\u6210\u201c\u7167\u7247\uff1a\u7ad9\u5728\u5927\u697c\u5916\u7684CEO\uff0c\u7a7f\u7740\u7070\u8272\u897f\u88c5\u548c\u9ed1\u8272\u9886\u5e26\uff0c\u671b\u7740\u5929\u201d\u5bf9\u4e8e\u770b\u4e0d\u5230\u56fe\u50cf\u7684\u4eba\u771f\u7684\u6709\u5e2e\u52a9\uff1f\u5982\u679c\u4f60\u89c9\u5f97\u662f\uff0c\u90a3\u4e48\u4f60\u5c31\u5199\u5427\u3002\u5728\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u6211\u89c9\u5f97\u8ba9\u66ff\u6362\u6587\u5b57\u7559\u767d\u6bd4\u8f83\u597d\u3002<\/p>\n<p>\u5bf9\u4e8etitle\u5c5e\u6027\uff0c\u6bd4\u8f83\u96be\u4e8e\u7ed9\u51fa\u4e25\u683c\u7684\u4f7f\u7528\u8bf4\u660e\u3002\u6211\u5927\u90e8\u5206\u7528\u5728\u90a3\u4e9b\u4e0d\u80fd\u81ea\u6211\u91ca\u610f\u7684\u94fe\u63a5\u4e0a\uff0c\u6bd4\u5982\u540c\u4e00\u9875\u9762\u4e0a\u7684\u76f8\u540c\u7684\u94fe\u63a5\u6587\u5b57\uff0c\u4e0d\u540c\u7684\u94fe\u63a5\u9875\u9762\u3002\u6709\u65f6\u5019\u4e5f\u4e3a\u4e00\u4e9b\u6309\u94ae\u6216\u8005\u8868\u5355\u5143\u7d20\u63d0\u4f9b\u66f4\u591a\u7684\u8bf4\u660e\u6587\u5b57\u3002<\/p>\n<p>\u66f4\u957f\u7684\u63cf\u8ff0<\/p>\n<p>\u5f53\u4e00\u4e2a\u56fe\u7247\u9700\u8981\u66f4\u52a0\u957f\u7684\u63cf\u8ff0\uff0c\u800c\u8d85\u8fc7alt\u5c5e\u6027\u7684\u9650\u5236\uff0c\u90a3\u4e48\u8fd8\u6709\u4e00\u4e9b\u9009\u62e9\u3002<\/p>\n<p>longdesc\u5c5e\u6027\u53ef\u4ee5\u7528\u6765\u63d0\u4f9b\u94fe\u63a5\u5230\u4e00\u4e2a\u5305\u542b\u56fe\u7247\u6587\u5b57\u63cf\u8ff0\u7684\u5355\u72ec\u9875\u9762\u3002\u8fd9\u5c31\u610f\u5473\u7740\u628a\u6d4f\u89c8\u8005\u94fe\u63a5\u5230\u53e6\u5916\u7684\u9875\u9762\uff0c\u8fd9\u53ef\u80fd\u4f1a\u9020\u6210\u7406\u89e3\u4e0a\u7684\u56f0\u96be\u3002\u53e6\u5916\u6d4f\u89c8\u5668\u5bf9\u4e8elongdesc\u5c5e\u6027\u7684\u652f\u6301\u4e5f\u662f\u4e0d\u4e00\u81f4\u7684\uff0c\u5e76\u4e14\u4e0d\u662f\u975e\u5e38\u597d\u3002<\/p>\n<p>longdesc\u5c5e\u6027\u53ef\u4ee5\u5305\u542b\u4e00\u4e2a\u94fe\u63a5\u5230\u5f53\u524d\u6587\u6863\u7684\u5176\u4ed6\u90e8\u5206\uff08\u951a\u70b9\uff09\u6765\u53d6\u4ee3\u94fe\u63a5\u5230\u53e6\u5916\u7684\u9875\u9762\u3002\u5728Accessibility footnotes, Andy Clarke\u5f88\u597d\u7684\u89e3\u91ca\u8bf4\u660e\u4e86\u5982\u4f55\u5e94\u7528\u3002<\/p>\n<p>\u63cf\u8ff0\u94fe\u63a5\uff08D links\uff09\u53ef\u4ee5\u7528\u6765\u8865\u5145longdesc\u3002\u4e00\u4e2a\u63cf\u8ff0\u94fe\u63a5\u5c31\u662f\u4e00\u4e2a\u5e38\u89c4\u7684\u94fe\u63a5\uff0c\u8fde\u63a5\u5230\u542b\u6709\u66ff\u6362\u6587\u5b57\u7684\u9875\u9762\u3002\u8be5\u94fe\u63a5\u88ab\u7f6e\u4e8e\u56fe\u50cf\u7684\u65c1\u8fb9\uff0c\u5e76\u4e14\u5728\u6240\u6709\u6d4f\u89c8\u5668\u4e2d\u90fd\u662f\u53ef\u662f\u7684\u3002\u5bf9\u4e8e\u5b83\u7684\u6709\u6548\u6027\u4eba\u4eec\u6709\u5f88\u591a\u4e0d\u540c\u610f\u89c1\uff0c\u6211\u7684\u4e2a\u4eba\u610f\u89c1\u4e0d\u5927\u559c\u6b22\u8fd9\u4e2a\u6ce8\u610f\u3002WCAG\u4e5f\u662f\uff0c\u5728\u4ed6\u4eec\u7684\u5de5\u4f5c\u8349\u6848HTML Techniques for WCAG 2.0\u4e2d\uff0c\u63cf\u8ff0\u94fe\u63a5\u662f\u88ab\u201c\u4e0d\u8d5e\u6210\u201d\u7684\u3002<\/p>\n<p>\u5982\u679c\u5bf9\u56fe\u7247\u7684\u957f\u7684\u63cf\u8ff0\u5bf9\u4e8e\u4efb\u4f55\u6d4f\u89c8\u8005\u90fd\u6709\u7528\uff0c\u90a3\u4e48\u4f60\u5f97\u8003\u8651\u8ba9\u5b83\u7b80\u5355\u7684\u663e\u793a\u5728\u540c\u4e00\u4e2a\u6587\u6863\u91cc\u9762\uff0c\u800c\u4e0d\u662f\u94fe\u63a5\u5230\u5176\u4ed6\u9875\u9762\u91cc\u6216\u8005\u85cf\u8d77\u6765\u3002\u8fd9\u6837\u6bcf\u4e2a\u4eba\u90fd\u53ef\u4ee5\u9605\u8bfb\u5230\u3002\u8fd9\u662f\u4e00\u79cd\u7b80\u5355\u4f4e\u6280\u672f\u542b\u91cf\u7684\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p># \u539f\u6587\uff1ahttp:\/\/www.456bereastreet.com\/archive\/200412\/the_a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-388","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/posts\/388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=388"}],"version-history":[{"count":0,"href":"https:\/\/www.mudone.com\/index.php?rest_route=\/wp\/v2\/posts\/388\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mudone.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}