{"id":2732,"date":"2012-10-25T17:10:04","date_gmt":"2012-10-25T09:10:04","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=2732"},"modified":"2018-01-02T02:18:59","modified_gmt":"2018-01-01T18:18:59","slug":"new-pad-retina-devicepixelratio-css-page","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2012\/10\/new-pad-retina-devicepixelratio-css-page\/","title":{"rendered":"\u89c6\u7f51\u819cNew iPad\u4e0e\u666e\u901a\u5206\u8fa8\u7387iPad\u9875\u9762\u7684\u517c\u5bb9\u5904\u7406"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=2732<\/a><\/p>\n

\u4e00\u3001\u8fd9\u662f\u7bc7\u7ecf\u9a8c\u5206\u4eab<\/h3>\n

\u5c31\u7b97\u4e0d\u662f\u679c\u7c89\u4e5f\u5e94\u8be5\u77e5\u9053\uff0ciPad2\u4e0enew iPad\u7684\u91cd\u5927\u533a\u522b\u4e4b\u4e00\u5c31\u662f\u663e\u793a\u5c4f\u7684\u5206\u8fa8\u7387\u3002new iPad\u663e\u793a\u5c4f\u88ab\u79f0\u4e4b\u4e3a\u201c\u89c6\u7f51\u819c\u663e\u793a\u5c4f\u201d\uff0c\u5176\u8bbe\u5907\u5206\u8fa8\u6bd4<\/a>\uff08\u4e4b\u524d\u6709\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u70b9\u51fb\u8fd9\u91cc<\/a>\u67e5\u770b\uff09\u662fiPad2\u7684\u4e24\u500d\u3002 – iPad mini\u4e5f\u662f\u666e\u901a\u5206\u8fa8\u6bd4\u3002<\/p>\n

iPad2\u4e0enew iPad\u540c\u65f6\u663e\u793a\u4e00\u4e2a\u9875\u9762\uff0c\u5bbd\u5ea6\u90fd\u662f1024\u50cf\u7d20\u7684\uff0c\u90a3\u5dee\u522b\u5728\u4ec0\u4e48\u5730\u65b9\u5462\uff1f\u2014\u2014\u5c31\u5728\u4e8enew iPad\u6bcf\u4e2a\u50cf\u7d20\u70b9\u5b9e\u9645\u4e0a\u67094\u500d\u7684\u666e\u901a\u50cf\u7d20\u70b9\uff0c\u5982\u4e0b\u793a\u610f(© smashingmagazine)\uff1a
\n\"\u6807\u51c6\u50cf\u7d20\u4e0e\u89c6\u7f51\u819c\u50cf\u7d20<\/p>\n

\u6211\u4eec\u4f7f\u7528CSS\u8bbe\u7f6e\u7684\u50cf\u7d20\u503c(px)\u5c5e\u4e8e\u666e\u901a\u50cf\u7d20\u70b9\uff0c\u6216\u8005\u79f0\u4e4b\u4e3a\u6807\u51c6\u50cf\u7d20\u70b9\u3002<\/p>\n

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\n
img {\n    width: 200px;\n    height: 200px;\n}<\/pre>\n<\/div>\n
\u5728iPad2\u6216Mini iPad\u4e2d\u5c31\u662f\u5f88\u6b63\u5e38\u663e\u793a\u7684\u56fe\u7247\uff1b\u4f46\u662f\uff0c\u5728New iPad\u4e2d\uff0c1\u4e2aCSS\u50cf\u7d20\u70b9\u5b9e\u9645\u4e0a\u67094\u4e2a\u4f4d\u56fe\u50cf\u7d20\u70b9\uff0c1\u4e2a\u5206\u62104\u4e2a\uff0c\u663e\u7136\u4e0d\u591f\u5206\u554a\uff0c\u53ea\u80fd\u989c\u8272\u8fd1\u4f3c\u9009\u53d6<\/strong>\uff0c\u4e8e\u662f\uff0c\u56fe\u7247\u611f\u89c9\u5c31\u662f\u6a21\u7cca\u7684(© smashingmagazine)\uff01
\n\"\u6807\u51c6\u50cf\u7d20\u5728\u89c6\u7f51\u819c\u5c4f\u5e55\u4e0b\u4e0d\u591f\u7528<\/p>\n
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\n
img {\n    width: 200px;\n    height: 200px;\n}<\/pre>\n<\/div>\n
\u6b64\u65f6\uff0c\u89c6\u7f51\u819c\u5c4f\u5e55\u4e0b\u56fe\u7247\u5c31\u663e\u793aOK\u4e86\uff08\u975e\u89c6\u7f51\u819c\u5c4f\u5e55\u56fe\u7247\u88ab\u538b\u7f29-\u51cf\u5c11\u50cf\u7d20\u53d6\u6837\u2014\u2014\u8d44\u6e90\u6d6a\u8d39\uff01\uff09(© smashingmagazine)\uff1a
\n\"\u964d\u4f4e\u53d6\u6837\"<\/p>\n
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\u955c\u82b1\u6c34\u6708\uff0c\u98d8\u6e3a\u6d6e\u4e91\uff0c\u5f88\u591a\u4e8b\u60c5\u4e0d\u662f\u4e00\u4eba\u80fd\u5de6\u53f3\u7684\u3002\u8fd8\u662f\u505a\u70b9\u5b9e\u5728\u7684\u4e8b\u60c5\uff1a\u9493\u9493\u9c7c\uff0c\u5206\u4eab\u4e9b\u6280\u672f\u5fc3\u5f97\uff0c\u53ef\u80fd\u4ef7\u503c\u66f4\u5927\u4e9b\uff0c\u54c8\u54c8\uff01<\/p>\n
\u4e8c\u3001\u5173\u4e8e\u8bbe\u8ba1\u56fe<\/h3>\n
\u8bbe\u8ba1\u56fe\u4e00\u5b9a\u8981\u662f\u9488\u5bf9\u9ad8\u6e05\u8bbe\u8ba1\u7684\uff0c\u5373\u5bbd\u5ea6\u4e3a2048\u50cf\u7d20\u3002\u4e3a\u4ec0\u4e48\u5462\uff1f\u5386\u53f2\u662f\u5411\u524d\u7684\uff0c\u5411\u4e0b\u517c\u5bb9\u624d\u662f\u738b\u9053\u4e0e\u8d8b\u52bf\u3002<\/p>\n
\u5728\u5b9a\u5143\u7d20\u7684CSS\u50cf\u7d20\u5c3a\u5bf8\u7684\u65f6\u5019\uff0c\u8bbe\u8ba1\u56fesize\u9664\u4ee52\u5c31\u662f\u51c6\u786e\u503c\u3002\u4f8b\u5982\uff0c\u8bbe\u8ba1\u56fe\u4e0a\u8fd9\u4e2a\uff1a
\n\"\u5b9e\u9645CSS\u5c3a\u5bf8\u53ea\u6709\u4e00\u534a\u5927\u5c0f\"<\/p>\n
\u4e09\u3001CSS\u56fe\u5f62\u751f\u6210<\/h3>\n
\u663e\u7136\uff0c\u4e00\u4e9b\u5706\u89d2\uff0c\u4ee5\u53ca\u6e10\u53d8\u4e4b\u7c7b\uff0c\u4f7f\u7528CSS3\u5b9e\u73b0\uff0c\u8fd9\u6837\uff0c\u65e0\u8bba\u662f\u9ad8\u6e05\u5c4f\u8fd8\u662f\u666e\u901a\u5c4f\uff0c\u90fd\u663e\u793a\u5f88\u8d5e\uff0c\u5c24\u5176\u5728New iPad\u4e0a\uff0c\u663e\u793a\u6548\u679c\u771f\u7684\u5f88\u8d5e\u7684\uff01<\/p>\n
\u4f8b\u5982\u4e0a\u9762\u7684\u90a3\u4e2a\u5238\u5b57\u56fe\u6807\uff0c\u91cc\u9762\u7684\u6587\u5b57\u5c31\u662f\u6587\u5b57\uff0c\u540e\u9762\u7684\u6e10\u53d8\u4ee5\u53ca\u5706\u89d2\u90fd\u662fCSS\u5b9e\u73b0\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\n
.priv_icon_coupon {\n    display: inline-block;\n    width: 70px;\n    height: 70px;\n    border-radius: 0.1em;\n    background-image: -webkit-gradient(linear, 0 0, 0 bottom, from(#EF137A), to(#9C117A));\n    font: bold 50px\/64px \"\u5fae\u8f6f\u96c5\u9ed1\";\n    color: #fff;\n    text-align: center;\n    text-shadow: 0 1px rgba(0,0,0,.5);\n}<\/pre>\n<\/div>\n
\n
<span class=\"priv_icon_coupon\">\u5238<\/span><\/pre>\n<\/div>\n
\u5982\u4e0bChrome\u6d4f\u89c8\u5668\u4e0b\u7684\u6548\u679c\uff0cNew iPad\u663e\u793a\u6548\u679c\u5f88\u7ec6\u817b\uff08\u6055\u6211\u5f04\u4e0d\u5230\u622a\u56fe\uff0c\u6211\u5c31\u60f3\u554a\uff0c\u603b\u4e0d\u80fd\u7528\u6211\u7684\u8bfa\u57fa\u4e9a\u624b\u673a\u62cd\u4e0b\u6765\u5c55\u793a\u5427~~\uff09
\n\"Chrome\u6d4f\u89c8\u5668\u4e0b\u7684\u5b9e\u9645\u6548\u679c<\/p>\n
\u6216\u8005\u4e0b\u9762\u7684\u56fe\u5f62\u6548\u679c\u7b49\u7b49\uff08Chrome\u6d4f\u89c8\u5668\u4e0b\u622a\u56fe\uff09\uff0c\u90fd\u53ef\u4ee5\u4f7f\u7528CSS\u5b9e\u73b0\u2014\u2014\u65e0\u9700\u62c5\u5fc3IE\u4e4b\u7c7b\u7684\u517c\u5bb9\u95ee\u9898\uff01
\n\"Chrome\u4e0bCSS3\u751f\u6210\u56fe\u5f62\u6548\u679c<\/p>\n
\u56db\u3001\u81ea\u5b9a\u4e49\u56fe\u6807\u5b57\u4f53(Icon Fonts)<\/h3>\n
\u5e76\u4e0d\u662f\u6240\u6709\u7684\u56fe\u5f62\u90fd\u53ef\u4ee5\u4f7f\u7528CSS\u751f\u6210\u7684\uff0c\u4f8b\u5982\u5f88\u591a\u7684\u7eaf\u8272\u5c0f\u56fe\u6807\u3002\u6b64\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u501f\u52a9\u53e6\u4e00\u9879\u6280\u672f\uff1a\u81ea\u5b9a\u4e49\u56fe\u6807\u5b57\u4f53\uff01<\/p>\n
\u6211\u662f\u5229\u7528IcoMoon\u7684\u514d\u8d39\u5f00\u6e90\u56fe\u6807\u5b57\u4f53\u8fdb\u884c\u5236\u4f5c\u7684\uff0c\u6839\u636e\u8bbe\u8ba1\u56fe\u9009\u62e9\u5408\u9002\u7684\u5c0f\u56fe\u6807\u4eec\uff0c\u751f\u6210\u81ea\u5b9a\u4e49\u5b57\u4f53\uff0c\u4e4b\u524d\u6709\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u70b9\u51fb\u8fd9\u91cc<\/a>\u67e5\u770b\u8be6\u60c5\uff01<\/p>\n
\u6709\u4eba\u66fe\u50cf\u6211\u62b1\u6028\uff0c\u8be5\u7f51\u7ad9\u66f4\u65b0\u592a\u5feb\uff0c\u4e0d\u80fd\u7528\u3002\u5176\u5b9e\u5b8c\u5168\u4e0d\u7528\u62c5\u5fc3\uff0c\u9996\u5148\uff0c\u5728\u540c\u4e00\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0a\uff0c\u60a8\u9009\u62e9\u7684\u5b57\u4f53\u5176\u4f1a\u672c\u5730\u5b58\u50a8\u4e0b\u6765\uff0c\u4e0b\u6b21\u6253\u5f00\u7684\u65f6\u5019\u4f1a\u81ea\u52a8\u663e\u793a\u60a8\u4e4b\u524d\u7684\u9009\u62e9\uff1b\u518d\u8005\uff0c\u5c31\u7b97\u672c\u5730\u4fe1\u606f\u88abremove\u6389\uff0c\u60a8\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5bfc\u5165\u4e4b\u524d\u751f\u6210\u7684SVG\u5b57\u4f53\u6587\u4ef6\u8fdb\u884c\u65b0\u7684\u7f16\u8f91\u4e0e\u751f\u6210\uff01<\/p>\n
\u4e0b\u56fe\u4e3a\u6211\u5728\u9879\u76ee\u4e2d\u4f7f\u7528\u5230\u7684\u6240\u6709\u56fe\u6807\u5b57\u4f53\uff1a
\n\"\u6240\u6709\u56fe\u6807\u5b57\u4f53<\/p>\n
\u76f8\u5173CSS\u5982\u4e0b\uff1a<\/p>\n
\n
\/* custom fonts *\/<\/span>\n@font-face {\n    font-family: ico;\n    src: url(\/b\/pad\/font\/icomoon.eot);\n    src: url(\/b\/pad\/font\/icomoon.eot?#iefix) format('embedded-opentype'),\n        url(\/b\/pad\/font\/icomoon.woff) format('woff'),\n        url(\/b\/pad\/font\/icomoon.ttf) format('truetype'),\n        url(\/b\/pad\/font\/icomoon.svg#icomoon) format('svg');\n}<\/pre>\n<\/div>\n
\u5f53\u7136\uff0c\u4f20\u7edfweb\u5f00\u53d1\u7684@font-face<\/code>\u76f8\u5173\u4ee3\u7801\u4e0e\u4e0a\u9762\u8fd8\u662f\u6709\u5dee\u5f02\u7684\uff08\u8fd9\u91cc\u65e0\u9700\u5173\u5fc3\u4f4e\u7248\u672cIE\u6d4f\u89c8\u5668\uff09\uff0c\u5177\u4f53\u53ef\u4ee5\u67e5\u770b\u6211\u4e4b\u524d\u7684\u201cCSS3 @font-face\u5b9e\u73b0\u989c\u8272\u5927\u5c0f\u53ef\u63a7\u7684\u4e09\u89d2\u6548\u679c<\/a>\u201d\u4e00\u6587\u3002<\/p>\n
\u4f7f\u7528\u81ea\u5b9a\u4e49\u5b57\u4f53\u56fe\u5f62\u7684\u597d\u5904\u5c31\u662f\uff0c\u65e0\u8bba\u4f60\u5c4f\u5e55\u7684\u50cf\u7d20\u6bd4\u591a\u9ad8\uff0c\u6211\u7684\u56fe\u5f62\u90fd\u662f\u7ec6\u817b\u7684\u5e73\u6ed1\u7684\uff0c\u8d8a\u9ad8\u50cf\u7d20\u6bd4\u6548\u679c\u8d8a\u597d\uff01\u56e0\u6b64\uff0ciPad2\u4e0eiPad3\u4e4b\u95f4\u5c4f\u5e55\u5206\u8fa8\u7387\u5dee\u5f02\u95ee\u9898\u5c31\u65e0\u9700\u62c5\u5fc3\uff01<\/p>\n
\u4f8b\u5982\uff0c\u5728Chrome\u6d4f\u89c8\u5668\u4e0b\uff0c\u6211\u7528\u9f20\u6807\u628a\u9875\u9762\u6bd4\u4f8b\u641e\u5f97\u86ee\u5927\u7684\uff0c\u6548\u679c\u4e5f\u662f\u5e73\u6ed1\u7684\uff1a
\n\"\u81ea\u5b9a\u4e49\u56fe\u6807\u5b57\u4f53\u65e0\u6240\u754f\u60e7\u4efb\u4f55\u50cf\u7d20<\/p>\n
\u4e94\u3001\u4f7f\u7528SVG\u80cc\u666f<\/h3>\n
\u672c\u9879\u76ee\u4e2d\uff0c\u6211\u5e76\u6ca1\u6709\u4f7f\u7528\u8fc7SVG\u80cc\u666f\uff0c\u4e0d\u8fc7\u4e4b\u524d\u7684\u624b\u673a\u9879\u76ee\u5230\u65f6\u4f7f\u7528\u8fc7\uff0c\u4e0e\u4e4b\u7c7b\u4f3c\u7684\uff0c\u53ef\u4ee5\u89e3\u51b3\u9ad8\u6e05iPhone\u4e0e\u666e\u901aiPhone\u7684\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u5177\u4f53\u53ef\u67e5\u770b\u524d\u6587\u201cSVG\u7279\u5f81\u3001\u652f\u6301\u4ee5\u53ca\u4e00\u4e9b\u5b9e\u9645\u4f7f\u7528\u95ee\u9898<\/a>\u201d\u3002<\/p>\n
\u5176\u4e2d\uff0c\u4e3e\u4f8b\u4e86\u5b9e\u73b0\u4e0b\u56fe\u7684\u6ce2\u6ce2\u6548\u679c\uff1a
\n\"\u6ce2\u7eb9\u72b6\u6548\u679c<\/p>\n
\u8be5SVG\u6587\u4ef6\u53ef\u4ee5\u70b9\u51fb\u8fd9\u91cc\u67e5\u770b\uff1acircle.svg<\/a><\/p>\n
\u8be5SVG\u6587\u4ef6\u662f\u81ea\u5df1\u7ed8\u5236\u7684\uff0c\u5982\u679c\u60a8\u4e5f\u60f3\u81ea\u5df1\u7ed8\u5236\u521b\u5efaSVG\u6587\u4ef6\uff0c\u53ef\u4ee5\u53c2\u89c1\u8fd9\u91cc<\/a>\u3002<\/p>\n
\u516d\u3001background-size\u4e0b\u7684\u5411\u4e0b\u517c\u5bb9<\/h3>\n
\u6709\u4e9b\u5c0f\u56fe\u6807\uff0c\u8bbe\u8ba1\u5e08\u628a\u5b83\u5f04\u6210\u6e10\u53d8\u7684\uff0c\u5e26\u8fb9\u6846\u7684\uff0c\u4e0d\u89c4\u5219\u7684\uff0c\u8fd9\u65f6\u5019\uff0c\u81ea\u5b9a\u4e49\u5b57\u4f53\u641e\u4e0d\u5b9a\uff08\u6587\u5b57\u6e10\u53d8\u4ec5\u90e8\u5206\u652f\u6301\uff09\uff0cSVG\u4e5f\u641e\u4e0d\u5b9a\uff08\u81ea\u5df1\u753b\u56fe\u529f\u529b\u6709\u9650\uff0c55555555\uff09\uff0c\u4e0d\u5f97\u5df2\uff0c\u8fd8\u662f\u4f7f\u7528\u4f20\u7edf\u7684\u56fe\u7247\u3002<\/p>\n
\u8fd9\u65f6\u5019\uff0c\u5076\u7684\u7b56\u7565\u662f\u8fd9\u6837\u5b50\u7684\uff0c\u9ad8\u6e05\u56fe\u7247\u4e0a\u539f\u59cb\u5927\u5c0f\u62a0\u51fa\u8fd9\u4e9b\u5c0f\u56fe\u6807\uff0c\u4f7f\u7528background-size\u8fdb\u884c\u5c3a\u5bf8\u9650\u5236\uff0c\u4f18\u5148\u9ad8\u6e05\u8bbe\u5907\uff1b\u56e0\u4e3a\u90fd\u5c5e\u4e8e\u5c0f\u56fe\u6807\uff0c\u6240\u6d6a\u8d39\u7684\u5c3a\u5bf8\u5927\u5c0f\u6709\u9650\uff0c\u6743\u8861\u6765\u770b\uff0c\u662f\u6700\u4f73\u7b56\u7565\u3002<\/p>\n
\u4f8b\u5982\u4e0b\u9762\u8fd9\u4e2a\u8bbe\u8ba1\u6548\u679c\uff1a
\n\"\u661f\u661f\u8bc4\u5206\u6548\u679c\"<\/p>\n
\u5f04\u51fa\u6765\u7684\u56fe\u7247\u4fe1\u606f\u5982\u4e0b\uff1a
\n\"\u661f\u661f\u6548\u679c\u62a0\u56fe\u6548\u679c<\/p>\n
\u53ef\u89c1\uff0c\u9ad8\u5ea6\u4ec5\u4e3a\u8bbe\u8ba1\u56fe\u4e0a\u7684\u539f\u59cb\u9ad8\u5ea6\u3002\u5728\u5b9e\u9645CSS\u5904\u7406\u7684\u65f6\u5019\uff0c\u5c3a\u5bf81\/2\u9650\u5236\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\n
star, .star_in {\n    background: url(star.png) repeat-x;\n    background-size: 14px 30px; \/* \u539f\u59cb\u5927\u5c0f28x60 *\/<\/span>\n}\n...<\/pre>\n<\/div>\n
\u4e8e\u662f\uff0c\u6700\u7ec8\uff0c\u9ad8\u6e05new iPad\u4e0b\u9ad8\u6e05\u663e\u793a\uff0c\u6548\u679c\u6760\u6760\u7684\uff1b\u666e\u901apad\u4e0a\u56fe\u72471\/2\u538b\u7f29\uff0c\u6548\u679c\u4e5f\u8fd8\u597d\uff0c\u4e5f\u7b97\u6e05\u695a\uff01<\/p>\n
\u5f53\u7136\uff0c\u5982\u679c\u4f60\u7cbe\u529b\u591f\u591a\uff0c\u8ffd\u6c42\u5b8c\u7f8e\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528CSS\u8fdb\u884c\u7cbe\u786e\u63a7\u5236\uff0c\u4f8b\u5982\uff1a<\/p>\n
\n
\n@media only screen and (-Webkit-min-device-pixel-ratio: 1.5) {\n    \/* \u5f53\u8bbe\u5907\u50cf\u7d20\u6bd4\u4e0d\u5c0f\u4e8e1.5\u7684\u65f6\u5019... *\/<\/span>\n}<\/pre>\n<\/div>\n
\u4e03\u3001\u6700\u96be\u5904\u7406\u7684\u666e\u901a\u7684img\u56fe\u7247\u4eec<\/h3>\n
\u5c55\u793a\u6027\u7684\u56fe\u7247\u662f\u6700\u96be\u5904\u7406\u7684\u3002<\/p>\n
\u4f8b\u5982\uff0c\u4e00\u4e2a\u9910\u5385\u56fe\u7247\uff0cCSS\u9650\u5236\u7684\u50cf\u7d20\u5bbd\u5ea6\u662f480×320, \u5982\u679c\u6211\u4eec\u76f4\u63a5\u663e\u793a480*320\u50cf\u7d20\u7684\u56fe\u7247\uff0c\u5219\u5728\u9ad8\u6e05\u8bbe\u5907\u4e0b\uff0c\u56fe\u7247\u76f8\u5f53\u4e8e2\u500d\u62c9\u4f38\u7684\u6548\u679c – \u6a21\u7cca\uff01\u5982\u679c\u9650\u5236\u9ad8\u6e05\u7684960*640\u56fe\u7247\uff0cOh, my gaga! \u8fd9\u589e\u52a0\u7684\u56fe\u7247\u5c3a\u5bf8\u5927\u5c0f\u4f30\u8ba1\u67094\u500d\u4e4b\u591a\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u666e\u901aiPad\u4e0a\uff0c3\/4\u7684\u56fe\u7247\u6d41\u91cf\u662f\u591a\u4f59\u7684\uff0c\u6d6a\u8d39\u7684\uff0c\u5173\u952e\u663e\u793a\u7684\u6548\u679c\u8fd8\u4e0d\u5982480*320\u50cf\u7d20\u7684\u597d\uff01\u5982\u4f55\u6743\u8861\uff0c\u5982\u4f55\u535a\u5f08\uff01\uff1f<\/p>\n
\u7406\u8bba\u4e0a\u8bb2\uff0c\u6700\u4f73\u7684\u505a\u6cd5\u662f\uff0c\u4e0d\u540c\u7684\u5c4f\u5e55\u8bbe\u5907\u663e\u793a\u4e0d\u540c\u7684\u5927\u5c0f\u56fe\u7247\u3002\u5177\u4f53\u505a\u6cd5\u5982\u4e0b\uff1a<\/p>\n
    \n
  1. \u51c6\u5907\u51e0\u5957\u5957\u56fe\u7247\uff0c\u5927\u5c0f\u9ad8\u5bbd\u6b63\u597d2\u500d\u62161.5\u500d\u5dee\u5f02\uff08\u53ea\u662fiPad\u5f00\u53d1\u7684\u8bdd\uff0c\u53ea\u8981\u4e24\u5957\uff09\uff0c\u56fe\u7247\u7684\u8def\u5f84\u8981\u53ef\u4ee5\u5f70\u663e\u5176\u6bd4\u4f8b\u5927\u5c0f\u3002\u4f8b\u5982\uff1a\n
    \n
    \/1\/a.jpg\n\/1.5\/a.jpg\n\/2\/a.jpg<\/pre>\n<\/div>\n<\/li>\n
  2. \u901a\u8fc7\u8bbe\u5907\u50cf\u7d20\u6bd4devicePixelRatio\u6765\u51b3\u5b9a\u5230\u5e95\u4f7f\u7528\u54ea\u5f20\u56fe\u7247\u3002\u4f8b\u5982\uff0c\u9ad8\u6e05iPad\u4e0b\uff0cwindow.devicePixelRatio<\/code>\u4e3a2<\/code>, \u56e0\u6b64\uff0c\u6211\u4eec\u7684\u56fe\u7247HTML\u5e94\u8be5\u662f\uff1a\n
    \n
    <img src=\"\/2\/a.jpg\" \/><\/pre>\n<\/div>\n<\/li>\n
  3. \u53ef\u4ee5\u901a\u8fc7url\u6216ajax\u8bf7\u6c42\u5f62\u5f0f\u5c06devicePixelRatio<\/code>\u5927\u5c0f\u901a\u77e5\u540e\u53f0\uff0c\u4ee5\u5b9e\u73b0HTML\u7684\u5b8c\u7f8e\u8f93\u51fa\uff1b\u6216\u8005\u56fe\u7247\u5177\u4f53\u663e\u793a\u54ea\u4e2aURL\u4f7f\u7528JavaScript\u8fdb\u884c\u63a7\u5236\uff0c\u5982\uff1a\n
    \n
    <img src=\"\u5360\u4f4d.jpg\" data-url=\"\/1\/a.jpg\" data-url2=\"\/2\/a.jpg\" width=\"240\" height=\"180\" \/><\/pre>\n<\/div>\n
    \n
    var eleImg = $(\"img\"), ratio = window.devicePixelRatio;\neleImg.attr(\"src\", eleImg.attr(ratio  > 1.5? \"data-url2\": \"\"data-url\"));<\/pre>\n<\/div>\n<\/li>\n<\/ol>\n
    \u4f46\u662f\uff0c\u4e0a\u9762\u7684\u505a\u6cd5\u53ea\u662f\u7406\u8bba\u7684\u505a\u6cd5\u3002\u5b9e\u9645\u4e0a\uff0c\u5982\u679c\u5b8c\u5168\u6309\u7167\u4e0a\u9762\u7684\u5b9e\u8df5\uff0c\u4f1a\u9047\u5230\u5f88\u591a\u963b\u788d\u2014\u2014\u8d44\u6e90\u3001\u914d\u5408\u3001\u5b9e\u65bd\u4ee5\u53ca\u6700\u7ec8\u6548\u679c\u7b49\uff01\u8bf4\u767d\u4e86\uff0c\u5c31\u662f\u975e\u5e38\u7684\u6298\u817e\uff0c\u5de5\u4f5c\u91cf\u5927\uff1b\u6700\u540e\u8bf4\u4e0d\u5b9a\u8fd8\u5403\u529b\u4e0d\u8ba8\u597d\u2014\u2014\u8001\u677f\u62ff\u7740\u4e2a\u9ad8\u6e05iPad\u5728\u5486\u54ee\uff1a\u600e\u4e48\u8fd9\u4e2a\u7011\u5e03\u6d41\u9875\u9762\u7684\u56fe\u7247\u52a0\u8f7d\u8fd9\u4e48\u6162\u554a\uff01\uff01<\/p>\n
    \u8fd8\u662f\u90a3\u53e5\u8bdd\uff0c\u4e00\u5207\u5728\u4e8e\u6743\u8861\uff01<\/strong><\/p>\n
    \u5927\u4f17\u70b9\u8bc4iPad\u9ad8\u6e05\u7248\uff0c\u9910\u5385\u8be6\u60c5\u9875\u9762\u7684\u7279\u8272\u83dc\u56fe\u7247\u90fd\u662f\u6a21\u7cca\u7684\uff08\u56fe\u5728\u6211\u773c\u4e2d\uff0c\u5f04\u4e0d\u4e0b\u6765~\uff09\uff1b\u53ef\u4ee5\u770b\u5230\uff0c\u5927\u4f17\u70b9\u8bc4\u53ef\u80fd\u9009\u62e9\u4e86\u901f\u5ea6\uff0c\u800c\u4e0d\u662f\u56fe\u7247\u7684\u663e\u793a\u8d28\u91cf\uff08\u56e0\u4e3a\u8fd9\u91cc\u7684\u7279\u8272\u83dc\u56fe\u7247\u53ef\u80fd\u4e0a\u767e\u4e4b\u591a\u2014\u2014\u867d\u7136\u4f7f\u7528\u4e86\u52a8\u6001\u52a0\u8f7d\uff09\uff01<\/p>\n
    \u4f46\u662f\uff0c\u5bf9\u4e8e\u67d0\u4e9b\u7279\u6b8a\u56fe\u7247\uff0c\u5230\u65f6\u53ef\u4ee5\u505a\u4e00\u4e9b\u517c\u5bb9\u5904\u7406\u3002<\/p>\n
    \u4f8b\u5982\uff0c\u9910\u5385\u4f4d\u7f6e\u7684Google\u9759\u6001\u56fe\u7247\uff08\u622a\u56fe\u6709\u7f29\u653e\uff09\uff1a
    \n\"Google\u9759\u6001\u5730\u56fe\u8bbe\u8ba1\u56fe\u622a\u56fe\u7f29\u7565\u56fe\"<\/p>\n
    \u5982\u679c\u4e0d\u8003\u8651new iPad\u7b49\u89c6\u7f51\u819c\u5c4f\u5e55\u8bbe\u5907\uff0c\u76f4\u63a5\u4e0b\u9762\u7684Code\u5c31\u53ef\u4ee5\u641e\u5b9a\u4e86\uff1a<\/p>\n
    \n
    <img src=\"http:\/\/maps.google.com\/maps\/api\/staticmap?center=31.230393,121.473704&zoom=12&size=300x210&sensor=false\" height=\"210\" width=\"300\" \/><\/pre>\n<\/div>\n
    \u5982\u4e0b\u6548\u679c\uff08\u975e\u622a\u56fe\uff09\uff1a
    \n<\/p>\n
    \u4f46\u662f\uff0c\u4e0a\u9762\u8fd9\u4e2a\u56fe\u5728\u6700\u65b0\u7684iMac\u4e0a\u6216\u8005new iPad\u4e0a\u5c31\u662f\u6a21\u7cca\u7684\uff0c\u8ddf\u65c1\u8fb9\u7ec6\u817b\u7684\u6587\u5b57\uff0c\u56fe\u6807\u6df7\u5728\u4e00\u8d77\uff0c\u663e\u5f97\u5341\u5206\u7684\u4e0d\u548c\u8c10\uff1b\u6211\u4eec\u6709\u5fc5\u8981\u8fdb\u884c\u7279\u6b8a\u5904\u7406\u3002<\/p>\n
    \u5f88\u7b80\u5355\uff0cnew iPad\u4e0a\u56fe\u7247\u4e24\u500d\u5927\u5c0f\u5c31\u53ef\u4ee5\u4e86\uff0c\u56e0\u6b64\uff0c\u4e0a\u9762\u7684size=300x210<\/code>\u6211\u4eec\u6539\u6210size=600x420<\/code>\uff0c\u7136\u540e\uff0c\u628a\u7f29\u653e\u6bd4\u4f8bzoom=12<\/code>\u518d\u63d0\u9ad8\u4e00\u70b9\u5c31\u53ef\u4ee5\u4e86\uff0c\u6bd4\u5982\u8bf4zoom=16<\/code>.<\/p>\n
    \u56e0\u6b64\uff0cnew iPad\u4e0bHTML\u4ee3\u7801\u4e3a\uff1a<\/p>\n
    \n
    <img src=\"http:\/\/maps.google.com\/maps\/api\/staticmap?center=31.230393,121.473704&zoom=16&size=600x420&sensor=false\" height=\"210\" width=\"300\" \/><\/pre>\n<\/div>\n
    \u5982\u4e0b\u6548\u679c\uff08\u975e\u622a\u56fe\uff09\uff1a
    \n<\/p>\n
    \u81f3\u4e8e\u5982\u4f55\u8ba9\u4e0d\u540c\u5c4f\u5e55\u663e\u793a\u4e0d\u540c\u56fe\u7247\uff0c\u90a3\u5c31\u662f\u4f60\u7684\u4e8b\u60c5\u4e86\uff0c\u65b9\u6cd5\u591a\u591a\uff0c\u60c5\u51b5\u4e0d\u540c\u4f7f\u7528\u65b9\u6cd5\u4e0d\u4e00\u6837\u3002<\/p>\n
    \u4f8b\u5982\uff0c\u6211\u8fd9\u91cc\u9910\u5385\u7684\u4fe1\u606f\uff08\u5305\u62ec\u9759\u6001\u5730\u56fe\u4f4d\u7f6e\uff09\u90fd\u662fAjax load HTML\u8f7d\u5165\u7684\uff0c\u56e0\u6b64\uff0c\u6211\u53ea\u9700\u8981\u5728Ajax\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u5c06iPad\u7684\u8bbe\u5907\u50cf\u7d20\u6bd4devicePixelRatio\u503c\u53d1\u7ed9\u540e\u53f0\uff0c\u5176\u4ed6\u7684\u4e8b\u60c5\uff0c\u5c31\u4ea4\u7ed9\u540e\u53f0\u4ed6\u4eec\u53bb\u5224\u65ad\u3001\u53bb\u8f93\u51fa\u4e86\uff01
    \n\"\u8bbe\u5907\u50cf\u7d20\u6bd4\u901a\u8fc7Ajax\u8bf7\u6c42\u53d1\u9001\u51fa\u53bb<\/p>\n
    \u6211\u5bf9\u9759\u6001\u5730\u56fe\u7814\u7a76\u4e0d\u662f\u5f88\u6df1\uff0c\u8fd9\u91cc\u53ef\u80fd\u6709\u5904\u7406\u4e0d\u5f53\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u540c\u884c\u6307\u6b63\uff0c\u4e0d\u751a\u611f\u8c22\uff01<\/p>\n
    \u516b\u3001\u54e6\uff0c\u83ab\u975e\u8fd9\u662f\u7ed3\u8bed<\/h3>\n
    \u672c\u6587\u7684\u5185\u5bb9\u5176\u5b9e\u4e0d\u53ea\u53d7\u7528\u4e8eiPad\u7684\u9875\u9762\u5236\u4f5c<\/code>\uff0c\u8fd8\u6709\u624b\u673a\u3002\u968f\u7740\u89c6\u7f51\u819c\u684c\u9762\u663e\u793a\u5668\u8d8a\u53d1\u7684\u666e\u53ca\uff08\u59822012\u6b3eiMac\u91c7\u7528\u4e86\u201d\u89c6\u7f51\u819c\u201d\u5c4f\u5e55\uff0c\u4ee5\u540e\uff0c\u5176\u4ed6\u4e00\u4e9b\u663e\u793a\u5668\u4eec\u4e5f\u4f1a\u8ddf\u98ce\uff0c\u505a\u5671\u5934\u7684~~\uff09\uff0c\u6211\u4eec\u4f20\u7edfweb\u7684\u9875\u9762\u5f00\u53d1\u4e5f\u5c06\u9762\u5bf9\u65b0\u7684\u6311\u6218\u2014\u2014\u4e0d\u4ec5\u8981\u5904\u7406\u4e0d\u540c\u7684\u663e\u793a\u5c4f\u5206\u8fa8\u7387\uff0c\u8fd8\u8981\u5904\u7406\u4e0d\u540c\u7684\u8bbe\u5907\u50cf\u7d20\u6bd4\uff01<\/p>\n
    \u770b\u6765\u82f9\u679c\u516c\u53f8\u60f3\u98a0\u8986\u7684\u4e1c\u897f\u6ce2\u53ca\u751a\u5e7f\uff0c\u5c14\u7b49\u4f30\u8ba1\u4e5f\u4e0d\u80fd\u5e78\u514d\u4e86\u3002<\/p>\n
    \u53d1\u5c55\u5f88\u5feb\uff0c\u6b62\u6b65\u4e0d\u524d\uff0c\u5bb9\u6613\u6dd8\u6c70\uff1b\u673a\u9047\u4e0e\u6311\u6218\u5171\u5b58\uff0c\u52a0\u6cb9\u5427\uff0c\u963f\u90ce\uff01<\/p>\n
    \u63a8\u8350\u9605\u8bfb\uff1aTowards A Retina Web<\/a><\/p>\n
    \u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u81ea\u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<\/a>[http:\/\/www.zhangxinxu.com<\/a>]
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