{"id":5419,"date":"2016-06-04T00:47:38","date_gmt":"2016-06-03T16:47:38","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=5419"},"modified":"2018-01-10T01:04:21","modified_gmt":"2018-01-09T17:04:21","slug":"image-preload-based-on-user-behavior","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2016\/06\/image-preload-based-on-user-behavior\/","title":{"rendered":"\u57fa\u4e8e\u7528\u6237\u884c\u4e3a\u7684\u56fe\u7247\u7b49\u8d44\u6e90\u9884\u52a0\u8f7d"},"content":{"rendered":"<p>by <a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a><br \/>\n\u672c\u6587\u5730\u5740\uff1a<a 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mousedown\u6309\u94ae\u7b49\u3002<\/p>\n<p>\u4e8e\u662f\uff0c\u5c31\u7ed9\u4e86\u6211\u4eec\u673a\u4f1a\uff0c\u5728click\u884c\u4e3a\u53d1\u751f\u4e4b\u524d\u53bb\u9884\u52a0\u8f7d\u56fe\u7247\uff0c\u4f8b\u5982\uff0c\u6211\u4eec\u9f20\u6807hover\u6309\u94ae\u7684\u65f6\u5019\u3002\u4e00\u822c\u4e00\u4e2a\u7528\u6237hover\u4e00\u4e2a\u6309\u94ae\u518dclick\u884c\u4e3a\u6280\u672f\uff0c\u8bf4\u67090.5\u79d2\u7684\u65f6\u957f\u4e00\u70b9\u90fd\u4e0d\u4e3a\u8fc7\u5427\uff0c\u56e0\u4e3a\u5149\u9f20\u6807\u6309\u4e0b\u518d\u62ac\u8d77\u5c31\u4e0a\u767e\u6beb\u79d2\u4e86\u3002\u4ecehover\u5230click\u4e4b\u95f4\u7684\u8fd9\u6bb5\u65f6\u95f4\uff0c\u5df2\u7ecf\u8db3\u591f\u6211\u4eec\u56fe\u7247\u8fdb\u884c\u9884\u52a0\u8f7d\u4e86\u3002\u800chover\u5230click\u7684\u884c\u4e3a\u662f\u6781\u5927\u6982\u7387\u4e8b\u4ef6\u3002\u4e8e\u662f\u4e4e\uff0c\u6211\u4eec\u901a\u8fc7\u63d0\u524d\u6355\u6349\u7528\u6237\u7684\u5176\u4ed6\u884c\u4e3a\u5b9e\u73b0\u4e86\u61d2\u52a0\u8f7d\u548c\u9884\u52a0\u8f7d\u7684\u5b8c\u7f8e\u7ed3\u5408\uff01<\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/study\/201606\/tab-image-preload.html\" target=\"_blank\">\u9009\u9879\u5361\u7528\u6237hover\u884c\u4e3a\u4e0b\u7684\u56fe\u7247\u9884\u52a0\u8f7ddemo<\/a><\/p>\n<p>\u70b9\u51fb\u9009\u9879\u5361\uff0c\u5341\u6709\u516b\u4e5d\u56fe\u7247\u77ac\u95f4\u5c31\u5448\u73b0\u4e86\uff0c\u5c31\u662f\u56e0\u4e3a\u4f60hover\u7684\u65f6\u5019\uff0c\u56fe\u7247\u5df2\u7ecf\u53bb\u52a0\u8f7d\u4e86\u3002\u5927\u5bb6\u6709\u5174\u8da3\u53ef\u4ee5\u6253\u5f00\u63a7\u5236\u53f0\u89c2\u5bdf\u8d44\u6e90\u7684\u52a0\u8f7d\uff0c\u5c31\u53ef\u4ee5\u660e\u767d\u4e0a\u9762\u5df4\u62c9\u5df4\u62c9\u8bf4\u7684hover\u9884\u52a0\u8f7d\u662f\u600e\u4e48\u56de\u4e8b\u4e86\u3002<\/p>\n<h3>\u4e09\u3001\u7528\u6237\u884c\u4e3a\u4e0e\u9884\u52a0\u8f7d\u5176\u4ed6<\/h3>\n<p>\u5176\u5b9eHTML5\u4e2d\u6709\u539f\u751f\u7684\u9884\u52a0\u8f7d\u5c5e\u6027\uff0c\u540d\u4e3a<code>prefetch<\/code>\u548c<code>prerender<\/code>\uff0c\u4f8b\u5982\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;link rel=\"prefetch\" href=\"(url)\"&gt;<\/pre>\n<\/div>\n<p>\u5982\u679c\u4f60\u6709\u5f88\u5927\u6982\u7387\u4f1a\u8bbf\u95eehref\u6307\u5411\u7684\u8d44\u6e90\uff0c\u5219\u53ef\u4ee5\u52a0\u5165\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u6d4f\u89c8\u5668\u4f1a\u9884\u52a0\u8f7d\u4e00\u4e9b\u8d44\u6e90\uff0c\u8bbf\u95ee\u5c31\u4f1a\u66f4\u8fc5\u901f\uff01<\/p>\n<p><a href=\"http:\/\/caniuse.com\/link-rel-prefetch\/embed\" rel=\"nofollow\" target=\"_blank\">\u517c\u5bb9\u6027<\/a>\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201801\/2018-01-10_010029.png\" width=\"555\" height=\"264\" alt=\"prefetch\u517c\u5bb9\u6027\" class=\"alignnone\" \/><\/p>\n<div class=\"zxx_code\">\n<pre>&lt;link rel=\"prefetcher\" href=\"(url)\"&gt;<\/pre>\n<\/div>\n<p><code>prerender<\/code>\u6bd4<code>prefetch<\/code>\u591a\u4e86\u4e2a<code>er<\/code>\uff0c\u6709\u201c\u4eba\u201d\u7684\u610f\u5473\u5728\u91cc\u9762\uff0c\u8868\u793a\u7684\u662f\u9884\u52a0\u8f7d\u9875\u9762\uff0c\u51c6\u786e\u70b9\u5c31\u662f\u6d4f\u89c8\u5668\u4f1a\u5728\u540e\u53f0\uff08\u9875\u9762\u4e0d\u53ef\u89c1\uff09\u7684\u4f4d\u7f6e\u9884\u52a0\u8f7d\u548c\u6e32\u67d3\u6211\u4eec\u7684\u9875\u9762\uff0c\u5f53\u6211\u4eec\u771f\u7684\u53bb\u8bbf\u95ee\u8fd9\u4e2a\u9875\u9762\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u500f\u5730\u5448\u73b0\u5728\u6211\u4eec\u9762\u524d\uff0c\u76f8\u6bd4<code>prefetch<\/code>\uff0c<a href=\"http:\/\/caniuse.com\/link-rel-prerender\/embed\" rel=\"nofollow\" target=\"_blank\">\u517c\u5bb9\u6027<\/a>\u8981\u5dee\u4e00\u4e9b\uff0c\u76ee\u524dFireFox\u548cAndroid\u90fd\u8fd8\u672a\u652f\u6301\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201801\/2018-01-10_010156.png\" width=\"560\" height=\"265\" alt=\"prerender\u517c\u5bb9\u6027\" class=\"alignnone\" \/><\/p>\n<p><strong>\u66f4\u65b0\u4e8e2018-01-10<\/strong><br \/>\nChrome\u770b\u6765\u5df2\u7ecf\u653e\u5f03\u652f\u6301\u4e86\uff0c\u4ee5\u4e3a\u7740\u8fd9\u4e2a\u7279\u6027\u53ef\u80fd\u4ee5\u540e\u4e5f\u4e0d\u4f1a\u652f\u6301\u4e86\uff0c\u4f1a\u88ab\u5e9f\u5f03\u3002<\/p>\n<hr>\n<p>\u629b\u5f00HTML\u9884\u52a0\u8f7d\u5c5e\u6027\u4e0d\u8c08\uff0c\u5b9e\u9645\u4e0a\uff0cChrome\u6d4f\u89c8\u5668\u672c\u8eab\u5185\u7f6e\u4e86\u7f51\u9875\u94fe\u63a5\u7684\u9884\u52a0\u8f7d\uff0c\u4ee5\u63d0\u9ad8\u7f51\u9875\u52a0\u8f7d\u901f\u5ea6\uff0c\u5728\u8bbe\u7f6e\u4e2d\u53ef\u4ee5\u7aa5\u89c1\u5230\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/image.zhangxinxu.com\/image\/blog\/201606\/2016-06-04_003451.png\" width=\"409\" height=\"265\" alt=\"Chrome\u6d4f\u89c8\u5668\u9884\u52a0\u8f7d\" class=\"alignnone\" \/><\/p>\n<p>\u4ee5\u524d\u53eb\u505a\u201c\u9884\u6d4b\u7f51\u7edc\u64cd\u4f5c\u201d\uff0c\u73b0\u5728\u6539\u4e3a\u201c\u8054\u60f3\u67e5\u8be2\u670d\u52a1\u201d\uff0c\u542b\u4e49\u66f4\u52a0\u6666\u6da9\u4e86\uff0c\u4f46\u662f\uff0c\u6211\u786e\u5b9a\u7684\u662f\uff0c\u548c\u4e0a\u9762\u7684\u9009\u9879\u5361\u4f8b\u5b50\u5982\u51fa\u4e00\u8f99\uff0c\u5bf9\u4e8e\u4f20\u7edf\u7684URL\u94fe\u63a5\uff0cChrome\u6d4f\u89c8\u5668\u4e0b\uff0c\u5f53\u4f60hover\u8be5\u94fe\u63a5\u7684\u65f6\u5019\uff0c\u9875\u9762\u7684\u52a0\u8f7d\u5df2\u7ecf\u5728\u6267\u884c\u4e86\uff0c\u6240\u8c13\u201c\u9884\u6d4b\u7f51\u7edc\u64cd\u4f5c\u201d\u5c31\u6709\u9884\u6d4b\u4f60\u5373\u5c06\u8bbf\u95ee\u8be5\u94fe\u63a5\u7684\u610f\u5473\u5728\u91cc\u9762\uff1b\u5f53\u7136\uff0c\u73b0\u5728\u7684\u9884\u52a0\u8f7d\u884c\u4e3a\u53ef\u80fd\u8981\u66f4\u52a0\u590d\u6742\u548c\u51c6\u786e\u4e86\u3002<\/p>\n<h3>\u56db\u3001\u7ed3\u675f\u8bed<\/h3>\n<p>\u5f53\u7136\uff0c\u7528\u6237\u7684\u884c\u4e3a\u4e0d\u4ec5\u5c40\u9650\u4e8e\u624b\u6307\u6309\u4e0b\uff0c\u6216\u8005hover\u3002\u4e3e\u4e2a\u5176\u4ed6\u4f8b\u5b50\uff0c\u641c\u7d22\u884c\u4e3a\uff0c\u5f53\u4f60\u5728\u4e00\u4e2a\u641c\u7d22\u6846\u91cc\u9762\u5f00\u59cb\u8f93\u5165\u5185\u5bb9\u7684\u65f6\u5019\uff0c\u5176\u5b9e\u6211\u4eec\u5c31\u53ef\u4ee5\u9884\u6d4b\uff0c\u5f88\u5927\u53ef\u80fd\u6027\u9a6c\u4e0a\u4f1a\u8df3\u5230\u641c\u7d22\u7ed3\u679c\u9875\u9762\uff0c\u6b64\u65f6\uff0c\u6211\u4eec\u662f\u4e0d\u662f\u53ef\u4ee5\u9884\u52a0\u8f7d\u641c\u7d22\u9875\u9762\u7684\u4e00\u4e9b\u8d44\u6e90\uff0c\u8fd9\u6837\uff0c\u4e00\u56de\u8f66\uff0c\u9875\u9762\u556a\u5730\u4e00\u58f0\u5c31\u51fa\u73b0\u4e86\uff0c\u5c82\u4e0d\u5e05\u5446\uff01<img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/4.gif\" align=\"absmiddle\"><\/p>\n<p>\u5173\u952e\u8981\u6709\u5fc3\uff0c\u5728\u6027\u80fd\u548c\u4f53\u9a8c\u4e4b\u95f4\u627e\u51fa\u66f4\u597d\u5730\u89e3\u51b3\u7b56\u7565\u3002<\/p>\n<p>\u6b22\u8fce\u63d0\u4f9b\u66f4\u591a\u9884\u52a0\u8f7d\u7684\u7cbe\u5f69\u6848\u4f8b\uff01<\/p>\n<p>\u611f\u8c22\u9605\u8bfb\uff0c\u5468\u672b\u6109\u5feb\uff01<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/mat1.gtimg.com\/www\/mb\/images\/face\/14.gif\" align=\"absmiddle\"><\/p>\n<p>\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<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=5419\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=5419<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u61d2\u52a0\u8f7d\u548c\u672c\u6587\u8981\u63d0\u5230\u7684\u9884\u52a0\u8f7d\u5b9e\u9645\u662f\u4e0d\u540c\u7684\u6982\u5ff5\u3002<\/p>\n<p>\u5178\u578b\u7684\u61d2\u52a0\u8f7d\uff0c\u4f8b\u5982\u672c\u535a\u6587\u7ae0\u7684\u56fe\u7247\uff0c\u5f53\u7528\u6237\u6eda\u52a8\u56fe\u7247\u8fdb\u5165\u7a97\u4f53\u7684\u65f6\u5019\uff0c\u624d\u53bb\u52a0\u8f7d\uff1b\u6216\u8005\u7528\u6237\u70b9\u51fb\u9009\u9879\u5361\uff0c\u539f\u672c\u9690\u85cf\u7684\u56fe\u7247\u6b64\u65f6\u518d\u53bb\u52a0\u8f7d\uff0c\u8fd9\u4e2a\u4e5f\u79f0\u4e4b\u4e3a\u61d2\u52a0\u8f7d\u3002<\/p>\n<p>\u800c\u9884\u52a0\u8f7d\u5219\u662f\uff0c\u7528\u6237\u8fd8\u6ca1\u6709\u884c\u4e3a\u53d1\u751f\uff0c\u8d44\u6e90\u5df2\u7ecf\u52a0\u8f7d\u5b8c\u6bd5\uff0c\u4ece\u8fd9\u4e00\u5b9a\u4e49\u6765\u8bb2\uff0c\u6211\u4eec\u4f20\u7edf\u56fe\u7247\u556a\u556a\u556a\u5168\u90e8\u52a0\u8f7d\u5b8c\u6bd5\uff0c\u672c\u8d28\u4e0a\u4e5f\u662f\u9884\u52a0\u8f7d\uff0c\u597d\u5904\u5c31\u5728\u4e8e\uff0c\u4f53\u9a8c\u597d\u554a\uff0c\u6ca1\u6709\u6cdb\u767d\u6216\u8005\u83ca\u82b1\u7684\u51fa\u73b0\u3002\u4e0d\u8db3\u4e5f\u5f88\u660e\u663e\uff0c\u90a3\u5c31\u662f\u8d44\u6e90\u53ef\u80fd\u767d\u767d\u52a0\u8f7d\u4e86\u3002<\/p>\n<p>\u90a3\u6709\u4ec0\u4e48\u529e\u6cd5\u53ef\u4ee5\u628a\u61d2\u52a0\u8f7d\u7684\u7701\u8d44\u6e90\u7701\u6d41\u91cf\u548c\u9884\u52a0\u8f7d\u826f\u597d\u4f53\u9a8c\u7ed3\u5408\u5728\u4e00\u8d77\u5462\uff1f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[180],"tags":[278,1067,1068,529,31,1066],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/5419"}],"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=5419"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/5419\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=5419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=5419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=5419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}