{"id":9090,"date":"2019-11-17T22:32:52","date_gmt":"2019-11-17T14:32:52","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9090"},"modified":"2019-11-17T22:34:37","modified_gmt":"2019-11-17T14:34:37","slug":"css-image-set","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2019\/11\/css-image-set\/","title":{"rendered":"\u6211\u4eec\u4e00\u8d77\u5b66\u4e60CSS image-set()"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9090\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=9090<\/a><br \/>\n\u672c\u6587\u6b22\u8fce\u5206\u4eab\u4e0e\u805a\u5408\uff0c\u5168\u6587\u8f6c\u8f7d\u5c31\u4e0d\u5fc5\u4e86\uff0c\u5c0a\u91cd\u7248\u6743\uff0c\u5708\u5b50\u5c31\u8fd9\u4e48\u5927\uff0c\u82e5\u6025\u7528\u53ef\u4ee5\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<p><script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/201911-image-set.jpg';<\/script><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/we-study-cut.jpg\" width=\"480\" height=\"291\" alt=\"\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\u5360\u4f4d\u56fe\" class=\"alignright clip thumb size-medium\" \/><\/p>\n<style>\n.msg-header {\n\tline-height: 48px;\n\tcolor: #fff;\n\tfont-weight: bold;\n\ttext-align: center;\n\tbackground-color: #222;\n\tmargin-bottom: 10px;\n}\n.msg-list {\n    width: 480px;\n    max-width: 100vw;\n    margin-left: auto; margin-right: auto;\n    background-color: #ebebeb;\n   \tpadding-bottom: 10px;\n}\n@media all and (max-width:480px){.msg-list{margin-left:-13px;margin-right:-15px;}}\n.msg-list p:empty{display:none;}\n.msg-item{\n    display: flex;\n    padding: 7px;\n    margin-bottom: 15px;\n}\n.msg-item::after{\n    content: '';\n    display: inline-block;\n    width: 44px;\n}\nimg.msg-avator{\n    width: 44px; height: 44px;\n    border-radius: 50%;\n    object-fit: cover;\n}\n.msg-info{\n    flex: 1;\n    text-align: start;\n    padding: 0 10px;\n    overflow:hidden;\n}\n.msg-user{\n    margin: 0;\n    font-weight: normal;\n    font-size: 13px;\n    color: #949ead;\n}\n.msg-time{\n    padding: 0 8px;\n}\n.msg-txt[class]{\n    position: relative;\n    width: fit-content;\n    background: #fff;\n    border-color: #fff;\n    font-size: 14px;\n    line-height: 1.5;\n    color: #000;\n    padding: .6em 1em;\n    text-align: left;\n    margin: 5px 0 0;\n    border-radius: 6px;\n    direction: ltr;\n}\n.msg-txt:first-of-type::before{\n    content: '';\n    position: absolute;\n    width: .75em; height: .75em;\n    top: 2px; left: -3px;\n    background-color: inherit;\n    -ms-transform: skew(35deg, 12deg);\n    transform: skew(35deg, 12deg);\n}\n.msg-code {\n\tfont-family: \"Lucida Console\", Consolas, Monaco;\n\twhite-space: pre-wrap;\n}\n.msg-last {\n\tcolor: gray;\n\tfont-size: 12px;\n\ttext-align: center;\n\tmargin: 8px 0;\n\ttext-shadow: 1px 1px hsla(0,0%,100%,.5);\n}\n.msg-last::before {\n\tcontent: '- ';\n}\n.msg-last::after {\n\tcontent: ' -';\n}\n.msg-item[data-self]{\n    direction: rtl;\n}\n.msg-item[data-self] .msg-txt{\n    background: #9CE553;\n    border-color: #9CE553;\n    color: #000;\n}\n[data-self] .msg-txt::before {\n\tleft: calc(100% - .575em);\n\t-ms-transform: skew(-35deg, -12deg);\n\ttransform: skew(-35deg, -12deg);\n}\n<\/style>\n<div class=\"msg-list\">\n<header class=\"msg-header\">\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\u7fa4<\/header>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6850\u987b\u771f\u51ac\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-teacher.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6850\u987b\u771f\u51ac<\/div>\n<p class=\"msg-txt\">\u5173\u4e8eimage-set()\u8fd9\u4e2aCSS\u65b0\u5c5e\u6027\u7684\u5b66\u4e60\uff0c\u5927\u5bb6\u6709\u4ec0\u4e48\u4e0d\u61c2\u7684\u76f4\u63a5\u5728\u7fa4\u91cc\u95ee\u552f\u6211\u540c\u5b66\u5427\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">\u597d\u7684<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\">o<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6b66\u5143\u6da6\u9999\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-runxiang.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6b66\u5143\u6da6\u9999<\/div>\n<p class=\"msg-txt\">\u6ca1\u95ee\u9898\u54df~<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u5927\u5bb6\u6709\u4ec0\u4e48\u60f3\u8981\u4e86\u89e3\u7684\u5417\uff1f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">\u6211\u5148\u95ee\u5427\uff0cimage-set()\u662f\u505a\u4ec0\u4e48\u7528\u7684\uff1f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u53ef\u4ee5\u7528\u6765\u6839\u636e\u4e0d\u540c\u8bbe\u5907\u7684\u5c4f\u5e55\u5bc6\u5ea6\u6216\u8005\u5206\u8fa8\u7387\u663e\u793a\u4e0d\u540c\u7684\u80cc\u666f\u56fe\u7247\uff08background-image\uff09\u6216\u8005<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/2017\/11\/css-css3-mask-masks\/\">\u906e\u7f69\u56fe\u7247<\/a>\uff08mask-image\uff09\u7b49\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">\u53ef\u4e0d\u53ef\u4ee5\u4e3e\u4e2a\u4f8b\u5b50\uff1f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u6ca1\u95ee\u9898\uff0c\u7a0d\u7b49\u2026\u2026<\/p>\n<p class=\"msg-txt\">\u8bf7\u770b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"msg-txt msg-code\">background-image: image-set(url(zxx.png) 1x, url(zxx-2x.png) 2x, url(zxx-print.png) 600dpi);<\/pre>\n<p class=\"msg-txt\">\u6ce8\u610f\uff0c\u56fe\u7247\u5730\u5740\u5916\u9762\u9700\u8981\u7528url()\u5305\u8d77\u6765\uff0c\u89c4\u8303\u6587\u6863\u8fd8\u6709MDN\u4e2d\u7684\u793a\u4f8b\u5728Chrome\u4e0b\u662f\u65e0\u6548\u7684\u54df\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6b66\u5143\u6da6\u9999\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-runxiang.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6b66\u5143\u6da6\u9999<\/div>\n<p class=\"msg-txt\">\u8d5e\u6ce8\u610f\u4e8b\u9879\uff01<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44d.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<p class=\"msg-txt\">\u5173\u4e8e\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u6bcf\u4e2a\u5b57\u6bcd\u90fd\u8ba4\u8bc6\uff0c\u4f46\u662f\u4e3a\u4ec0\u4e48\u8fde\u8d77\u6765\u6211\u5c31\u4e0d\u61c2\u4e86\u5462\uff1f\u563f\u563f\u563f\u563f\u2026\u2026<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u4e0a\u9762CSS\u4ee3\u7801\u7684\u610f\u601d\u662f\uff1a\u5982\u679c\u5c4f\u5e55\u662f\u4e00\u500d\u5c4f\uff0c\u4e5f\u5c31\u662f\u8bbe\u5907\u50cf\u7d20\u6bd4\u662f1\u7684\u8bdd\uff0c\u5c31\u4f7f\u7528zxx.png\u4f5c\u4e3a\u80cc\u666f\u56fe\u7247\uff1b\u5982\u679c\u5c4f\u5e55\u662f2\u500d\u5c4f\u53ca\u5176\u4ee5\u4e0a\uff0c\u5219\u4f7f\u7528zxx-2x.png\u8fd9\u5f20\u56fe\u4f5c\u4e3a\u80cc\u666f\u56fe\uff1b\u5982\u679c\u8bbe\u5907\u7684\u5206\u8fa8\u7387\u5927\u4e8e600dpi\uff0c\u5219\u4f7f\u7528zxx-print.png\u4f5c\u4e3a\u80cc\u666f\u56fe\u3002<\/p>\n<p class=\"msg-txt\">\u5982\u679c\u4e0d\u4e86\u89e3\u8bbe\u5907\u50cf\u7d20\u6bd4\u7684\u6982\u5ff5\uff0c\u53ef\u4ee5\u8bbf\u95ee<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/2012\/08\/window-devicepixelratio\/\">\u8fd9\u7bc7\u6587\u7ae0<\/a>\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\">dpi?<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6b66\u5143\u6da6\u9999\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-runxiang.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6b66\u5143\u6da6\u9999<\/div>\n<p class=\"msg-txt\">\u6211\u4e5f\u60f3\u95ee\u5462<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">dpi\u8868\u793a\u6bcf\u82f1\u5bf8\u70b9\u6570\u3002\u5c4f\u5e55\u901a\u5e38\u6bcf\u82f1\u5bf8\u5305\u542b72\u621696\u70b9\uff0c\u6253\u5370\u6587\u6863\u7684dpi\u901a\u5e38\u8981\u5927\u5f97\u591a\u3002\u6240\u4ee5\uff0cdpi\u503c\u5728600\u4ee5\u4e0a\u6211\u4eec\u5c31\u53ef\u4ee5\u8ba4\u4e3a\u662f\u6253\u5370\u8bbe\u5907\u4e86\u3002<\/p>\n<p class=\"msg-txt\">\u53e6\u5916\uff0c1x\uff0c2x\u8fd9\u91cc\u7684x\u5176\u5b9e\u662fdppx\u7684\u522b\u79f0\uff0c\u8868\u793a\u6bcf\u50cf\u7d20\u5355\u4f4d\u7684\u70b9\u6570\uff0c\u4e5f\u53ef\u4ee5\u7406\u89e3\u4e3a\u5c4f\u5e55\u5bc6\u5ea6\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\">soga<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">\u611f\u89c9\u548c\u6211\u4ee5\u524d\u770b\u5230\u8fc7\u7684\u4e00\u4e2a\u540d\u53ebsrcset\u7684html\u5c5e\u6027\u5f88\u50cf\u5462\uff1f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u6ca1\u9519\uff0c\u548csrcset\u65e0\u8bba\u662f\u540d\u79f0\u8fd8\u662f\u8bed\u6cd5\u786e\u5b9e\u6709\u76f8\u4f3c\u4e4b\u5904\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"msg-txt msg-code\">&lt;img src=\"zxx.jpg\" srcset=\"zxx-2x.png 2x\"&gt;<\/pre>\n<p class=\"msg-txt\">\u4e0d\u8fc7srcset\u8981\u590d\u6742\uff0c\u8fd8\u5305\u62ecsizes\u5c5e\u6027, w\u63cf\u8ff0\u7b26\u3002\u5f3a\u70c8\u5efa\u8bae\u8bfe\u540e\u770b\u770b\u201c<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=4371\">\u54cd\u5e94\u5f0f\u56fe\u7247srcset\u5168\u65b0\u91ca\u4e49<\/a>\u201d\u8fd9\u7bc7\u6587\u7ae0\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44c.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44c.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u4e3a\u4e86\u65b9\u4fbf\u5927\u5bb6\u5b66\u4e60\uff0c\u6211\u8fd8\u505a\u4e86\u4e2ademo\u6f14\u793a\u9875\u9762\uff0c\u5927\u5bb6\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/201911\/background-image-set-demo.php\" target=\"_blank\">CSS image-set()\u4e0e\u4e0d\u540c\u5c3a\u5bf8\u80cc\u666f\u56fedemo<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44d.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44d.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6b66\u5143\u6da6\u9999\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-runxiang.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6b66\u5143\u6da6\u9999<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44d.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u5927\u5bb6\u53ef\u4ee5\u70b9\u8fdb\u53bb\uff0c\u770b\u770b\u81ea\u5df1\u624b\u673a\u52a0\u8f7d\u7684\u662f\u54ea\u4e2a\u89c4\u683c\u7684\u56fe\u7247\uff0c\u603b\u5171\u6709128px\uff0c256px\uff0c512px\u4e09\u4e2a\u89c4\u683c\u3002\u4e0b\u9762\u662f\u4f7f\u7528\u7684\u4ee3\u7801\uff1a<\/p>\n<pre class=\"msg-txt msg-code\" style=\"letter-spacing: -1px;\">.image-set-by-zxx {\r\n  width: 128px; height: 96px;\r\n  background: url(not.jpg);\r\n  background: -webkit-image-set(\r\n    url(w128px.jpg) 1x, \r\n    url(w256px.jpg) 2x, \r\n    url(w512px.jpg) 3x);\r\n  background: image-set(\r\n    url(w128px.jpg) 1x, \r\n    url(w256px.jpg) 2x, \r\n    url(w512px.jpg) 3x);\r\n  background-size: cover;\r\n}<\/pre>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\">\u8fd9\u6b21\u770b\u61c2\u4e86\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6b66\u5143\u6da6\u9999\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-runxiang.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6b66\u5143\u6da6\u9999<\/div>\n<p class=\"msg-txt\">\u6211\u4e5f\u61c2\u4e86\uff0c\u5c31\u662f1\u500d\u5c4f\u52a0\u8f7dw128px.jpg\uff0c2\u500d\u5c4f\u52a0\u8f7dw256.jpg\uff0c3\u500d\u53ca\u5176\u4ee5\u4e0a\u5c4f\u52a0\u8f7dw512.jpg<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u6ca1\u9519\u6ca1\u9519<\/p>\n<p class=\"msg-txt\">\u4f8b\u5982\u6211\u81ea\u5df1\u5bb6\u53f0\u5f0f\u673a\u7684\u666e\u901a\u663e\u793a\u5668\u4e0b\u6253\u5f00demo\u9875\u9762\u52a0\u8f7d\u7684\u662f128px\u89c4\u683c\u56fe\u7247\uff0c\u622a\u56fe\u5982\u4e0b\uff1a<\/p>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/2019-11-17_205460.png\" width=\"235\" height=\"238\" alt=\"\u666e\u901a\u663e\u793a\u5668Chrome\u52a0\u8f7d128\u5c3a\u5bf8\"><\/p>\n<p class=\"msg-txt\">\u5982\u679c\u6253\u5f00\u5f00\u53d1\u8005\u5de5\u5177\uff0c\u8fdb\u5165\u79fb\u52a8\u7aef\u9884\u89c8\u6a21\u5f0f\uff0c\u5982iPhone6\/7\/8\uff0c\u5219\u52a0\u8f7d\u7684\u662f256px\u7684\u56fe\u7247\uff0c\u622a\u56fe\u5982\u4e0b\uff1a<\/p>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/2019-11-17_211309.png\" width=\"235\" height=\"321\" alt=\"iphone6\u52a0\u8f7d256\u5c3a\u5bf8\"><\/p>\n<p class=\"msg-txt\">iPhone 6\/7\/8 plus\u662f3\u500d\u5c4f\uff0c\u56e0\u6b64\u52a0\u8f7d\u7684\u662f512px\u7684\u56fe\u7247\uff0c\u622a\u56fe\u5982\u4e0b\uff1a<\/p>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/2019-11-17_211457.png\" width=\"235\" height=\"320\" alt=\"iphone plus\u52a0\u8f7d256\u5c3a\u5bf8\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f44d.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"> \u4e00\u76ee\u4e86\u7136<\/p>\n<p class=\"msg-txt\">\u90a3\u8fd9\u4e2aCSS\u5c5e\u6027\u7684\u517c\u5bb9\u6027\u5982\u4f55\u5462\uff0c\u53ef\u4ee5\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4f7f\u7528\u5417\uff1f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u517c\u5bb9\u6027\u5982\u4e0b\u56fe\u6240\u793a\uff0cIE\u548cFirefox\u90fd\u4e0d\u652f\u6301\u3002Chrome\u548cSafari\u90fd\u652f\u6301\uff0c\u56e0\u6b64\uff0c\u79fb\u52a8\u7aef\u53ef\u4ee5\u4f7f\u7528\uff0cPC\u7aef\u5176\u5b9e\u4e5f\u662f\u53ef\u4ee5\u4f7f\u7528\u7684\u3002<\/p>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/2019-11-17_213349.png\" width=\"235\" height=\"673\" alt=\"image-set\u7684\u517c\u5bb9\u6027\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">PC\u4e0d\u662f\u6709\u4e9b\u6d4f\u89c8\u5668\u4e0d\u652f\u6301\u7684\u5417\uff1f\u4e5f\u80fd\u4f7f\u7528\uff1f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u5bf9\u7684\uff0c\u6e10\u8fdb\u589e\u5f3a\u5c31\u597d\u4e86\u3002\u518d\u4f7f\u7528image-set()\u8bed\u53e5\u4e4b\u524d\u52a0\u4e00\u884c\u4f20\u7edf\u7684background: url()\u8bed\u53e5\u5c31\u597d\u4e86\uff0c\u515c\u5e95\uff0c\u8fd9\u6837\u5c31\u7b97\u6d4f\u89c8\u5668\u4e0d\u652f\u6301image-set()\uff0c\u6211\u4eec\u7684\u754c\u9762\u6837\u5f0f\u4f9d\u7136\u826f\u597d\u3002Demo\u9875\u9762\u5c31\u6709\u8fd9\u6837\u7684\u5904\u7406\u54e6\u3002<\/p>\n<p class=\"msg-txt\">\u4ece\u8fd9\u4e00\u70b9\u6765\u770b\uff0cimage-set()\u5b9e\u7528\u6027\u5176\u5b9e\u4e5f\u5c31\u90a3\u6837\uff0c\u5b9e\u9645\u5f00\u53d1\u5f80\u5f80\u76f4\u63a5\u4f20\u7edf\u8bed\u6cd5\u4f7f\u75282\u500d\u56fe\uff0c\u4e00\u6765\u73b0\u5728\u6d41\u91cf\u4e0d\u503c\u94b1\uff0c\u4e8c\u6765\u7701\u5f97\u51c6\u5907\u591a\u4efd\u5c3a\u5bf8\u56fe\u7247\uff0c\u51cf\u5c11\u4e86\u5f00\u53d1\u548c\u7ef4\u62a4\u6210\u672c\u3002\u53ea\u6709\u6d77\u91cf\u7528\u6237\u4ea7\u54c1\uff0c\u6216\u8005\u7ed9\u4e1c\u5357\u4e9a\u3001\u975e\u6d32\u5f00\u53d1\u7684\u4ea7\u54c1\u624d\u9700\u8981\u8003\u8651image-set()\u517c\u987e\u4f53\u9a8c\u548c\u6d41\u91cf\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">\u5662\u5566\uff0c\u90a3\u6211\u770b\u4e0b\u515c\u5e95\u6548\u679c\u662f\u600e\u6837\u7684\u3002<\/p>\n<p class=\"msg-txt\">\u5947\u602a\uff0c\u4e3a\u4ec0\u4e48\u6211\u7528Firefox\u6d4f\u89c8\u5668\u6253\u5f00\u663e\u793a\u7684\u662f\u4e0b\u9762\u8fd9\u6837\u5b50\u5462\uff1f<\/p>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/image-set-not.jpg\" width=\"256\" height=\"192\" alt=\"\u4e0d\u652f\u6301\u56fe\u7247\u793a\u610f\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\" data-self>\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u552f\u6211\u6210\u5e78\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-weiwo.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u552f\u6211\u6210\u5e78<\/div>\n<p class=\"msg-txt\">\u90a3\u662f\u56e0\u4e3a\u4f60\u7684\u6d4f\u89c8\u5668\u4e0d\u652f\u6301image-set()\uff0c\u6240\u4ee5\u663e\u793a\u4e86\u515c\u5e95\u7684\u56fe\u7247\uff0c\u6211\u968f\u4fbf\u627e\u4e86\u5f20\u7535\u8111\u91cc\u7684\u56fe\u7247\u793a\u610f\u4e86\u4e0b\u3002<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u53e4\u6865\u6587\u4e43\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-wennai.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u53e4\u6865\u6587\u4e43<\/div>\n<p class=\"msg-txt\">\u9053\u7406\u6211\u90fd\u61c2\uff0c\u4f46\u662f\u4f60\u4e3a\u4ec0\u4e48\u4f7f\u7528\u771f\u51ac\u8001\u5e08\u8fd9\u5f20\u7167\u7247\uff1f@\u6850\u987b\u771f\u51ac<\/p>\n<p class=\"msg-txt\">\u800c\u4e14\u8fd8\u662f\u4e0d\u7a7f\u8863\u670d\u7167\u7247\uff0c\u4f60\u4e2a\u5927\u53d8\u6001\u3002<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f621.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u7eea\u65b9\u7406\u73e0\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-lizhu.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u7eea\u65b9\u7406\u73e0<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f628.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6b66\u5143\u6da6\u9999\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-runxiang.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6b66\u5143\u6da6\u9999<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f621.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"> <img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f621.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"> <img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f621.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"msg-item\">\n        <img decoding=\"async\" class=\"msg-avator\" alt=\"\u6850\u987b\u771f\u51ac\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/avatar-teacher.png\"><\/p>\n<div class=\"msg-info\">\n<div class=\"msg-user\">\u6850\u987b\u771f\u51ac<\/div>\n<p class=\"msg-txt\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/2019-11-17_214547.png\" width=\"150\" height=\"130\" alt=\"\u6850\u987b\u771f\u51ac\u9707\u60ca\"><\/p>\n<p class=\"msg-txt\">\u4ec0\u4e48\u60c5\u51b5\uff1f\uff1f\uff01\uff01\uff01<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p class=\"msg-last\">\u6b32\u77e5\u540e\u4e8b\u5982\u4f55\uff0c\u4e14\u542c\u4e0b\u56de\u5206\u89e3<\/p>\n<\/div>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u6b22\u8fce\u5206\u4eab\uff0c\u52ff\u5168\u6587\u8f6c\u8f7d\uff0c\u5982\u679c\u5185\u5bb9\u4f60\u5b9e\u5728\u559c\u6b22\uff0c\u53ef\u4ee5\u52a0\u5165\u6536\u85cf\u5939\uff0c\u8bf4\u4e0d\u5b9a\u54ea\u5929\u6545\u4e8b\u53c8\u7ee7\u7eed\u66f4\u65b0\u4e86\u5462\u3002<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9090\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=9090<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201911\/we-study-cut.jpg\" width=\"160\" height=\"94\" alt=\"\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\u5360\u4f4d\u56fe\" class=\"alignright  size-medium\" \/><\/p>\n<p>\u6211\u4eec\u65e0\u6cd5\u4e00\u8d77\u5b66\u4e60\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u4e00\u8d77\u8c08\u604b\u7231\u3002\u6211\u4eec\u65e0\u6cd5\u5b66\u4e60CSS image-set()\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u770b\u552f\u6211\u6210\u5e78\u548c\u4f17\u59b9\u5b50\u4eec\u4e00\u8d77\u5b66\u4e60CSS 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