{"id":2207,"date":"2017-05-03T13:14:37","date_gmt":"2017-05-03T05:14:37","guid":{"rendered":"http:\/\/www.qdabc.cn\/?p=2207"},"modified":"2017-05-03T13:14:37","modified_gmt":"2017-05-03T05:14:37","slug":"%e7%bd%91%e9%a1%b5%e6%8f%90%e9%ab%98%e5%8a%a0%e8%bd%bd%e9%80%9f%e5%ba%a6%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.qdabc.cn\/?p=2207","title":{"rendered":"\u7f51\u9875\u63d0\u9ad8\u52a0\u8f7d\u901f\u5ea6\u7684\u65b9\u6cd5"},"content":{"rendered":"<p>\u63d0\u9ad8\u52a0\u8f7d\u901f\u5ea6\u6700\u672c\u8d28\u5c31\u662f\u51cf\u5c11\u9875\u9762\u8bf7\u6c42\u6570\u91cf\uff0c\u51cf\u5c11\u8bf7\u6c42\u5927\u5c0f\u3002\u5b9e\u73b0\u65b9\u5f0f\u4e3b\u8981\u6709<br \/>\n1.\u56fe\u7247\u61d2\u52a0\u8f7d\uff0c\u8fd9\u4e2a\u63a8\u8350\u4f7f\u7528\u6210\u719f\u7684\u5e93lazysizes\uff0c\u56fa\u5b9a\u5bbd\u9ad8\u503c\u7684\u56fe\u7247\u5b9e\u73b0\u6bd4\u8f83\u7b80\u5355\uff0c<br \/>\n\u56fa\u5b9a\u5bbd\u9ad8\u6bd4\u7684\u8bdd\u6709\u51e0\u79cd\u5b9e\u73b0\u65b9\u6848\uff1a<br \/>\n\u7b2c\u4e00\u79cd\u65b9\u6848\u4f7f\u7528padding-top\u6216\u8005padding-bottom\u6765\u5b9e\u73b0\u56fa\u5b9a\u5bbd\u9ad8\u6bd4\u3002\u4f18\u70b9\u662f\u7eafCSS\u65b9\u6848\uff0c\u7f3a\u70b9\u662fHTML\u5197\u4f59\uff0c\u5e76\u4e14\u5bf9\u8f93\u51fa\u5230\u7b2c\u4e09\u65b9\u4e0d\u53cb\u597d\u3002<br \/>\n\u7b2c\u4e8c\u79cd\u65b9\u6848\u5728\u9875\u9762\u521d\u59cb\u5316\u9636\u6bb5\u5229\u7528ratio\u8bbe\u7f6e\u5b9e\u9645\u5bbd\u9ad8\u503c\uff0c\u4f18\u70b9\u662fhtml\u5e72\u51c0\uff0c\u5bf9\u8f93\u51fa\u5230\u7b2c\u4e09\u65b9\u53cb\u597d\uff0c\u7f3a\u70b9\u662f\u4f9d\u8d56js\uff0c\u7406\u8bba\u4e0a\u4f1a\u81f3\u5c11\u6296\u52a8\u4e00\u6b21\u3002<br \/>\n\u6b64\u65b9\u6848\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u8bbe\u7f6e\u56fe\u7247\u9ad8\u5ea6\u7684\u51fd\u6570\uff1a<\/p>\n<pre>function resetImgHeight(els, placeholder) {\r\n    var ratio = 0,\r\n        i, len, width;\r\n\r\n    for (i = 0, len = els.length; i &lt; len; i++) {\r\n        els[i].src = placeholder;\r\n\r\n        width = els[i].clientWidth; \/\/\u4e00\u5b9a\u8981\u4f7f\u7528clientWidth\r\n        if (els[i].attributes['data-ratio']) {\r\n            ratio = els[i].attributes['data-ratio'].value || 0;\r\n            ratio = parseFloat(ratio);\r\n        }\r\n\r\n        if (ratio) {\r\n            els[i].style.height = (width * ratio) + 'px';\r\n        }\r\n    }\r\n}<\/pre>\n<p>3.js\/css\u6309\u9700\u6253\u5305<br \/>\n\u8fd9\u91cc\u9700\u8981webpack\u7684\u914d\u5408\u6765\u5b9e\u73b0<br \/>\n4.\u7528base64\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u7f51\u7edc\u8bf7\u6c42<br \/>\n\u53ef\u4ee5\u4f7f\u7528gulp\u81ea\u52a8\u5316\u5de5\u5177\u6765\u5b9e\u73b0<br \/>\n5.js\/css\u6309\u9700\u52a0\u8f7d<br \/>\n\u7b80\u5355\u8bf4\u5c31\u662f\u52a8\u6001\u63d2\u5165script\u8282\u70b9\uff0c\u7528webpack\u5b9e\u73b0\u5c31\u662frequire.ensure();<\/p>\n<p class=\"post-copyright\">\u6b22\u8fce\u5206\u4eab\u672c\u6587\uff0c\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u51fa\u5904\uff1a<a href=\"http:\/\/www.qdabc.cn\">\u524d\u7aefABC<\/a> &raquo; <a href=\"http:\/\/www.qdabc.cn\/?p=2207\">\u7f51\u9875\u63d0\u9ad8\u52a0\u8f7d\u901f\u5ea6\u7684\u65b9\u6cd5<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u63d0\u9ad8\u52a0\u8f7d\u901f\u5ea6\u6700\u672c\u8d28\u5c31\u662f\u51cf\u5c11\u9875\u9762\u8bf7\u6c42\u6570\u91cf\uff0c\u51cf\u5c11\u8bf7\u6c42\u5927\u5c0f\u3002\u5b9e\u73b0\u65b9\u5f0f\u4e3b\u8981\u6709 1.\u56fe\u7247\u61d2\u52a0\u8f7d\uff0c\u8fd9\u4e2a\u63a8\u8350\u4f7f\u7528\u6210\u719f\u7684\u5e93lazysizes\uff0c\u56fa\u5b9a\u5bbd\u9ad8\u503c\u7684\u56fe\u7247\u5b9e\u73b0\u6bd4\u8f83\u7b80\u5355\uff0c \u56fa\u5b9a\u5bbd\u9ad8\u6bd4\u7684\u8bdd\u6709\u51e0\u79cd\u5b9e\u73b0\u65b9\u6848\uff1a \u7b2c\u4e00\u79cd\u65b9\u6848 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"_links":{"self":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2207"}],"collection":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2207"}],"version-history":[{"count":1,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2207\/revisions"}],"predecessor-version":[{"id":2208,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2207\/revisions\/2208"}],"wp:attachment":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2207"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}