{"id":2181,"date":"2020-03-18T22:10:28","date_gmt":"2020-03-18T14:10:28","guid":{"rendered":"http:\/\/ufqi.com\/blog\/?p=2181"},"modified":"2020-03-19T15:03:20","modified_gmt":"2020-03-19T07:03:20","slug":"5g-network-speed-webpage-lazyloading","status":"publish","type":"post","link":"https:\/\/ufqi.com\/blog\/5g-network-speed-webpage-lazyloading\/","title":{"rendered":"\u5199\u51995G\u7f51\u901f\u53ca\u9875\u9762\u63d0\u901f\u4e2d\u7684\u5ef6\u8fdf\u52a0\u8f7dLazyloading"},"content":{"rendered":"<p>\u6700\u8fd1\u5173\u6ce8\u7f51\u7edc\u901f\u5ea6\u591a\u4e00\u4e9b\uff0c\u65e0\u8bba\u662f\u8d22\u7ecf\u4eba\u58eb\u53e3\u4e2d\u7684\u65b0\u57fa\u5efa\u76845G\uff0c\u8fd8\u662f\u5bb6\u5ead\u8def\u7531\u5668\u4e2d\u76845G Wifi\uff0c\u4e5f\u5305\u62ec\u5373\u5c06\u8d2d\u4e70\u65b0\u76845G\u624b\u673a&#8230; \u5199\u5b8c\u4e0a\u4e00\u7bc7\uff1a<a href=\"https:\/\/ufqi.com\/blog\/gmis-with-ipv4-ipv6-dual-stack\/\">gMIS\u5409\u7c73\u65af \u5347\u7ea7\u652f\u6301IPv4\/IPv6\u53cc\u6808\u7f51\u7edc\u6a21\u5f0f<\/a>\u00a0 \u4e4b\u540e\uff0c\u89c9\u5f97\u8fd8\u6709\u5fc5\u8981\u518d\u5199\u5199\u70ed\u70b95G\u53ca\u5176\u5e26\u5bbd\u901f\u5ea6\u3002<\/p>\n<p>\u5c3d\u7ba1\u4e92\u8054\u7f51\u7edc\u5df2\u7ecf\u7a81\u98de\u731b\u8fdb\u5730\u53d1\u5c55\u5efa\u8bbe\u8fd9\u4e48\u591a\u5e74\uff0c\u5982\u679c\u7559\u610f\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6253\u5f00\u4e00\u4e2a\u56fe\u6587\u9875\u9762\u4ecd\u89c9\u5f97\u5f88\u5403\u529b\u3002\u5c3d\u7ba1\u7ec8\u7aef\u624b\u673a\u548c\u8fd0\u8425\u5546\u90fd\u63d0\u4f9b\u4e86\u767e\u5146\u3001\u51e0\u767e\u5146\u7684\u8fde\u63a5\u901f\u5ea6\uff0c\u57fa\u672c\u7684\u56fe\u6587\u9875\u9762\u6253\u5f00\uff0c\u4ecd\u96be\u7528\u6d41\u7545\u6765\u5f62\u5bb9\u3002<\/p>\n<p>\u51b7\u9759\u5730\u89c2\u5bdf\u4e00\u4e0b\uff0c\u773c\u4e0b\u7684<strong>\u7f51\u7edc\u6d4f\u89c8\u6709\u70b9\u50cf\u5f00\u8f66\u53bb\u57ce\u91cc\u7684\u5927\u533b\u9662\u770b\u533b\u751f<\/strong>\u7684\u8fc7\u7a0b\uff1b<br \/>1) \u98de\u901f\u5730\u51b2\u51fa\u5c0f\u533a\u4e0a\u4e86\u57ce\u5e02\u4e3b\u5e72\u9053\uff08\u5bbd\u5e26\u5165\u6237\uff1a\u5feb\uff09\uff0c<br \/>2) \u4e3b\u5e72\u9053\u62e5\u5835\uff0c\u9f9f\u901f\uff08\u793e\u533a\u5230\u7535\u4fe1\u5c40\u5171\u4eab\u5e26\u5bbd\uff1a\u5361\uff09\uff0c<br \/>3) \u8de8\u533a\u5feb\u901f\u8def\u3001\u57ce\u5e02\u73af\u8def\u62e5\u5835\uff0c\u9f9f\u901f\uff08\u57ce\u5e02\u95f4\u3001\u8fd0\u8425\u5546\u4e4b\u95f4\u3001\u8de8\u56fd\uff1a\u5835\uff09\uff0c<br \/>4) \u8fdb\u533b\u9662\u533a\u96be\u3001\u505c\u8f66\u6f2b\u957f\uff0c\u6302\u53f7\u6392\u961f\u6f2b\u957f\uff08\u670d\u52a1\u7aef\u5e26\u5bbd\u53ca\u961f\u5217\uff1a\u6162\uff09\uff0c<br \/>5) \u89c1\u533b\u751f\uff0c\u5feb\u901f\u9762\u8c08\u51e0\u5206\u949f\uff08\u670d\u52a1\u5668\u5904\u7406\u5355\u4e2a\u8bf7\u6c42\uff1a\u5feb\uff09\u3002<\/p>\n<p>\u6982\u7565\u5730\u770b\uff0c\u73b0\u5728\u7684\u5835\u70b9\u5728\u4e2d\u95f4\u7f51\u7edc\u5c42\uff0c\u4e0d\u5728\u7ec8\u7aef\u5c42\uff08\u6700\u540e\u4e00\u516c\u91cc\uff09\uff0c\u65e0\u8bba\u662f\u5feb\u901f\u76845G\u624b\u673a\u30015G\u57fa\u7ad9\uff0c\u8fd8\u662f\u5149\u7ea4\u5165\u6237\u51e0\u767e\u5146\u3001\u5343\u5146\u7684\u8def\u7531\uff0c<strong>\u51fa\u4e86\u5c0f\u533a\u4e4b\u540e\u5f00\u59cb\u5c31\u5361\u3001\u5835\u3001\u6162<\/strong>\u3002\u62e5\u5835\u70b9\u5728\u793e\u533a\u5230\u7535\u4fe1\u5c40\u3001\u8de8\u57ce\u5e02\u8de8\u8fd0\u8425\u5546\u8de8\u56fd\u5bb6\u4ee5\u53ca\u670d\u52a1\u5668\u7aef\u5e26\u5bbd\u53ca\u961f\u5217\uff0c\u4e5f\u5373<strong>\u9aa8\u5e72\u7f51\u548c\u6570\u636e\u4e2d\u5fc3<\/strong>\u3002<\/p>\n<p><strong>1. 5G Wifi \u548c 5G Cellular<\/strong><\/p>\n<p>\u4e24\u8005\u7684\u5171\u540c\u70b9\u662f\uff0c\u8fd9\u4e24\u4e2a5G\u90fd\u662f\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u3002<br \/>\u8fd9\u4e24\u8005\u7684\u533a\u522b\u662f\u524d\u8005\u76845G\u662f\u6307Wifi\u901a\u4fe1\u6807\u51c6802.11x\u4e2d\u7684 5Ghtz\u7684\u9891\u7387\u6bb5\uff0c\u800c\u540e\u80055G\u662f\u6307\u7b2c\u4e94\u4ee3\u901a\u4fe1\u6807\u51c6\uff0c\u5177\u4f53\u7528\u5230\u591a\u5c11\u9891\u7387\u6bb5\uff0c\u5404\u56fd\u5404\u8fd0\u8425\u5546\u81ea\u5df1\u9009\u5b9a\u3002\u4e0b\u56fe\u662f\u4e2d\u56fd\u4e09\u5927\u8fd0\u8425\u5546\u76845G Cellular\u7528\u5230\u7684\u9891\u7387\u6bb5\u3002<\/p>\n<p>5G Wifi \u548c 5G Cellular\u975e\u8981\u7ffb\u8bd1\u4e00\u4e0b\u662f\uff1a <strong>5G Wifi: 5G\u8d6b\u5179\u9891\u7387\u7684\u9ad8\u4fdd\u771f\u65e0\u7ebf\u8fde\u63a5\u6280\u672f\uff1b5G Cellular: \u7b2c\u4e94\u4ee3\u8702\u7a9d\u5f0f\u7ec4\u7f51\u6280\u672f \u3002<\/strong>5G\u624b\u673a\uff0c\u5c31\u662f\u652f\u6301\u7b2c\u4e94\u4ee3\u8702\u7a9d\u5f0f\u7ec4\u7f51\u6280\u672f\u7684\u624b\u673a\u30025G\u5bb6\u7528\u8def\u7531\u5668\u5c31\u662f\u652f\u63015G\u8d6b\u5179\u9891\u7387\u9ad8\u4fdd\u771f\u65e0\u7ebf\u8fde\u63a5\u6280\u672f\u7684\u8def\u7531\u5668\u3002<\/p>\n<p>\u8fd1\u671f\u7f51\u7edc\u65b0\u95fb\u4e2d\u6251\u9762\u800c\u6765\u76845G\u5e94\u8be5\u662f\u6307 5G Cellular\uff0c\u53ef\u60f3\u800c\u77e5\uff0c\u6269\u5c55\u518d\u591a\u76845G\u57fa\u7ad9\uff0c\u4f7f\u7528\u518d\u5feb\u76845G\u624b\u673a\uff0c\u4e5f\u65e0\u6cd5\u89e3\u51b3\u4e0a\u8ff0\u8fc7\u7a0b\u4e2d\u7684\u5361\u3001\u5835\u3001\u6162\u30025G Cellular\u4e0b\u7684\u70b9\u5bf9\u70b9\u7684\u5c40\u90e8\u8fde\u63a5\uff0c\u6216\u6709\u79ef\u6781\u610f\u4e49\uff0c\u5bf9\u63a8\u52a8\u5c40\u90e8\u7ec4\u7f51\u7684\u7269\u8054\u7f51\u6216\u6709\u5e2e\u52a9\u3002<\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/img-blog.csdnimg.cn\/20190807094702646.png?x-oss-process=image\/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDYwNTE3OQ==,size_16,color_FFFFFF,t_70\" width=\"441\" height=\"246\" \/><\/p>\n<p>\u8fd9\u4e48\u62e5\u5835\u800c\u8270\u96be\u7684\u9aa8\u5e72\u7f51\u548c\u6570\u636e\u4e2d\u5fc3\uff0c\u4e3a\u4f55\u4e00\u4e9b\u6210\u89c4\u6a21\u7684\u4e92\u8054\u7f51\u670d\u52a1\u8fd8\u662f\u770b\u8d77\u6765\u5f88\u6d41\u7545\uff0c\u56fe\u6587\u6d4f\u89c8\u4e0d\u8bf4\uff0c\u751a\u81f3\u662f\u89c6\u9891\u70b9\u64ad\u3001\u76f4\u64ad\u4e5f\u8fd8\u53ef\u4ee5\uff1f\u5927\u81f4\u6709\u4e09\u70b9\uff1a1) \u8d44\u6e90\u4e0b\u6c89&amp;\u524d\u7f6e\u5230\u7528\u6237\u6700\u8fd1\u7684\u5730\u65b9\uff08\u533b\u751f\u5230\u5c0f\u533a\u95e8\u53e3\u5f00\u8bca\uff09\uff1b2) \u538b\u7f29\u53ca\u4f20\u8f93\u6280\u672f\u7684\u8fdb\u6b65\u4f7f\u5f97\u9ad8\u6e05\u56fe\u50cf\u6570\u636e\u6d41\u53ef\u4ee5\u5728\u4f4e\u901f\u7f51\u7edc\u4e0a\u8fd0\u884c\uff08\u9a91\u8f66\u6216\u8005\u5f00\u98de\u673a\u53bb\u770bVIP\u533b\u751f\uff09\uff1b3) \u70ed\u70b9\u6570\u636e.<\/p>\n<p>\u8fd9\u4e9b\u90fd\u9700\u8981\u5de8\u5927\u7684\u5f00\u652f\uff08\u66f4\u591a\u7684\u786c\u5e7f\u544a\u65f6\u95f4\/\u66f4\u6784\u9677\u7684\u8f6f\u5185\u5bb9\u8bbe\u8ba1\uff09\u6765\u652f\u6491\u3002<\/p>\n<p><strong>2. \u7f51\u7edc\u9875\u9762\u52a0\u8f7d\u4e2d\u7684\u5ef6\u8fdf\u52a0\u8f7dLazy loading<\/strong><\/p>\n<p>\u65e0\u8bba\u662f\u7ec8\u7aef\u63d0\u901f\uff0c\u8fd8\u662f\u9aa8\u5e72\u7f51\u548c\u6570\u636e\u4e2d\u5fc3\u7684\u63d0\u901f\uff0c\u90fd\u662f\u7cfb\u7edf\u5de5\u7a0b\u3001\u793e\u4f1a\u5de5\u7a0b\u3002\u4f5c\u4e3a\u5176\u4e2d\u7684\u4e2a\u4f53\uff0c\u4e00\u4e2a\u7f51\u7ad9\u548c\u4e00\u4e2a\u7f51\u9875\u5982\u4f55\u80fd\u5728\u65e2\u6709\u7684\u7f51\u7edc\u901f\u5ea6\u6761\u4ef6\u4e0b\uff0c\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u597d\u7684\u6d4f\u89c8\u4f53\u9a8c\uff0c\u662f\u6280\u672f\u548c\u8bbe\u8ba1\u4eba\u5458\u9700\u8981\u5171\u540c\u8003\u8651\u7684\u95ee\u9898\u3002\u8fd9\u5176\u4e2d\u5ef6\u8fdf\u52a0\u8f7dLazy Loading\u6280\u672f\u662f\u9887\u53d7\u6b22\u8fce\u7684\u6280\u672f\u4e4b\u4e00\u3002<\/p>\n<p>\u00a0\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6d4f\u89c8\u5668\u52a0\u8f7d\u4e00\u4e2a\u56fe\u6587\u9875\u9762\uff0c\u901a\u5e38\u662f\u6309\u81ea\u7136\u987a\u5e8f\uff0c\u7531\u524d\u5230\u540e\uff0c\u81ea\u4e0a\u800c\u4e0b\u7684\u8fdb\u884c\u3002\u5f53\u67d0\u4e9b\u8d44\u6e90\u5c3a\u5bf8\u8f83\u5927\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u6280\u5de7\u8df3\u8fc7\u8fd9\u4e9b\u5927\u5757\u5934\uff0c\u5c06\u9875\u9762\u5168\u8c8c\u5e03\u5c40\u663e\u793a\u5b8c\u6210\u540e\u518d\u5206\u51fa\u65f6\u95f4\u548c\u7cbe\u529b\u6765\u5904\u7406\u8fd9\u5927\u5757\u5934\u7684\u5bf9\u8c61\uff0c\u8fd9\u5c31\u662f\u5ef6\u8fdf\u52a0\u8f7d\u3002<\/p>\n<p>\u6bd4\u5982\u7f51\u9875\u4e2d\u7684\u56fe\u7247\uff0c\u6216\u8005\u8f83\u5927\u7684\u6570\u636eList\u3002\u6211\u4eec\u66fe\u7ecf\u5728 <a href=\"https:\/\/ufqi.com\/dev\/gmis\/\">gMIS\u5409\u7c73\u65af<\/a> \u7684\u90e8\u7f72\u4e2d\u9047\u5230\u8981\u5c06\u4e0a\u4e07\u6761\u8bb0\u5f55\u52a0\u8f7d\u5230\u4e00\u4e2a Select \u4e2d\u7684\u9700\u6c42\uff0c\u901a\u8fc7\u5f02\u6b65\u5ef6\u8fdf\u52a0\u8f7d\u53ef\u4ee5\u5f88\u597d\u7684\u6539\u5584\u6d4f\u89c8\u4f53\u9a8c\uff0c\u907f\u514d\u9875\u9762\u5361\u6b7b\u3002<\/p>\n<p>gMIS\/\u5409\u7c73\u65af GitHub\u6e90\u4ee3\u7801\uff1a<br \/>comm\/ido.js:\u00a0function imageLoadAsync(imgId, imgRealPath);<\/p>\n<p>\u7ec6\u7a76\u8d77\u6765\uff0c\u5ef6\u8fdf\u52a0\u8f7dLazy Loading\u53ef\u4ee5\u533a\u5206\u4e3a\u4e24\u4e2a\u5c42\u6b21\uff1a<br \/>1) \u5c06\u56fe\u7247\u7b49\u4ece\u4e3b\u4f53\u6587\u672c\u4e2d\u533a\u5206\u5f00\u6765\uff0c\u901a\u8fc7\u7f51\u9875\u4e2d\u7684 JavaScript \u7684 window.setTimeout \u53ef\u4ee5\u5c06\u67d0\u4e9b\u56fe\u7247\u5ef6\u8fdf\u52a0\u8f7d\uff1b<br \/>2) \u66f4\u8fdb\u4e00\u6b65\u5730\uff0c\u53ef\u4ee5\u5c06\u4e00\u7ec4\u56fe\u7247\u7684\u6bcf\u4e00\u5f20\u90fd\u4f7f\u7528\u7f51\u9875\u4e2d\u7684 JavaScript \u7684 window.setTimeout \u5206\u522b\u4e88\u4ee5\u5ef6\u8fdf\u4e00\u5b9a\u7684\u65f6\u95f4\u3002<\/p>\n<p>\u5c24\u5176\u662f\u540e\u4e00\u79cd\u505a\u6cd5\uff0c\u53ea\u8981\u5ef6\u8fdf\u7684\u901f\u5ea6\u8ddf\u5f97\u4e0a\u7528\u6237\u7684\u6d4f\u89c8\u548c\u9605\u8bfb\u7684\u901f\u5ea6\u5373\u53ef\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u540c\u65f6\u5e76\u53d1\u591a\u4e2aHTTP\u8bf7\u6c42\u62d6\u6162\u6d4f\u89c8\u5668\uff0c\u4e5f\u907f\u514d\u4e86\u77ac\u95f4\u5730\u5bf9\u670d\u52a1\u5668\u7684\u5e76\u53d1\u8bf7\u6c42\u7684\u51b2\u51fb\u3002<\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/ufqi.com\/blog\/wp-content\/uploads\/2020\/03\/loading.gif\" width=\"262\" height=\"173\" \/><\/p>\n<p>\u5728 <a href=\"https:\/\/ufqi.com\/news\/\">-Ufqi-News \u6709\u798f\u65b0\u95fb<\/a> \u548c \u4e00\u4e9b\u57fa\u4e8e <a href=\"https:\/\/ufqi.com\/dev\/gwa2\/\">-GWA2 \u5409\u5a03\u5154 <\/a>\u7684\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u8bbe\u8ba1\u4e86\u5982\u4e0b\u8fd9\u6837\u7684\u56fe\u7247\u5f02\u6b65\u5ef6\u8fdf\u52a0\u8f7d\u7684\u7b56\u7565\u3002<\/p>\n<blockquote>\n<p>&lt;img class=&#8221;iconList&#8221; src=&#8221;loading.gif&#8221; data-src=&#8221;real-image-1.jpg&#8221; alt=&#8221;-x-&#8220;\/&gt;<br \/>&lt;img class=&#8221;iconList&#8221; src=&#8221;loading.gif&#8221; data-src=&#8221;real-image-2.jpg&#8221; alt=&#8221;-x-&#8220;\/&gt;<\/p>\n<p>&#8230;.<\/p>\n<p>&lt;script&gt;<br \/>var delayImgLoadi = window.setTimeout(function(){<br \/> \/\/-<br \/> var myImgs = document.getElementsByClassName(&#8220;iconList&#8221;);<br \/> var imgListSize = myImgs.length;<br \/>var mysrc = &#8221;;<br \/> for(var ii=0; ii&lt;imgListSize; ii++){<br \/> mysrc = myImgs[ii].getAttribute(&#8216;data-src&#8217;);<br \/> if(mysrc == &#8221;){<br \/> myImgs[ii].src = &#8216;data:image\/jpeg;base64,0&#8217;; <br \/> }<br \/> else{<br \/> var loadAsyncImg = window.setTimeout(function(myObj, mySrc){<br \/> myObj.src = mySrc; <br \/> }, 1000*1.5*ii, myImgs[ii], mysrc);<br \/> }<br \/> }<br \/> \/\/-<br \/> }, 1500*1);<br \/>&lt;\/script&gt;<\/p>\n<\/blockquote>\n<p>\u8fd9\u79cd\u7b56\u7565\u7684\u5177\u4f53\u5b9e\u73b0\u662f\uff0c<br \/>\u9996\u5148\u5c06\u4e00\u7ec4\u56fe\u7247\u7684\u9ed8\u8ba4 src\u8d44\u6e90\u6307\u5411\u4e00\u4e2a\u9ed8\u8ba4\u7684\u56fe\u7247\uff08\u5982 loading.gif ), \u9875\u9762\u52a0\u8f7d\u65f6\u4f1a\u5feb\u901f\u5b8c\u6210\u8fd9\u4e2a\u56fe\u7247\u5217\u8868\uff1b<br \/>\u5176\u6b21\u5728\u9875\u9762\u4e0b\u9762\u5b89\u6392\u4e86\u4e00\u6bb5 JavaScript \u4ee3\u7801\uff0c\u5b89\u6392\u4e86\u4e00\u4e2a\u5f02\u6b65\u6267\u884c\u7684\u4ee3\u7801\u6bb5A\uff0c\u5176\u4e2d\u5c06\u8981\u8bfb\u53d6\u4e0a\u9762\u4e00\u7ec4\u56fe\u7247\uff1b<br \/>\u518d\u6b21\uff0c\u4ee3\u7801\u6bb5A\u6839\u636e\u8bfb\u53d6\u5230\u7684\u56fe\u7247\uff0c\u5224\u65ad\u5176\u771f\u5b9esrc\uff08 data-src )\u662f\u5426\u5408\u6cd5\uff0c\u5982\u679c\u5408\u6cd5\uff0c\u5c31\u989d\u5916\u5730\u5b89\u6392\u53e6\u5916\u4e00\u4e2a\u5f02\u6b65\u6267\u884c\u7684\u4ee3\u7801\u6bb5B\uff1b<br \/>\u6700\u540e\uff0c\u4ee3\u7801\u6bb5B\u5c06\u8fd9\u4e2a\u771f\u5b9e\u7684src\u4ece\u670d\u52a1\u5668\u7aef\u8bfb\u53d6\u8fc7\u6765\uff0c\u5e76\u5448\u73b0\u5728\u9875\u9762\u4e2d\uff0c\u6267\u884c\u901f\u5ea6\u662f\u6bcf1.5\u79d2\u8bfb\u53d6\u4e00\u4e2a\u3002<\/p>\n<p>\u5f53\u4ee3\u7801\u6bb5A\u88ab\u5b89\u6392\u5b8c\u6210\u540e\uff0c\u9875\u9762\u5df2\u7ecf\u5448\u73b0\u5b8c\u6210\uff0c\u7528\u6237\u53ef\u4ee5\u9605\u8bfb\u5176\u4e2d\u7684\u6587\u5b57\u5185\u5bb9\uff1b\u5f53\u4ee3\u7801\u6bb5B\u88ab\u6267\u884c\u65f6\uff0c\u7528\u6237\u5df2\u7ecf\u5f00\u59cb\u9605\u8bfb\u5185\u5bb9\uff1b\u968f\u7740\u4ee3\u7801\u6bb5B\u88ab\u987a\u5e8f\u6267\u884c\u65f6\uff0c\u56fe\u7247\u4e5f\u4e00\u4e00\u5448\u73b0\uff0c\u7528\u6237\u4e5f\u5c31\u987a\u5e8f\u9605\u8bfb\u5230\u56fe\u7247\uff1b\u53ea\u8981\u4ee3\u7801\u6bb5B\u7684\u6267\u884c\u901f\u5ea6\u5927\u4e8e\u7528\u6237\u7684\u9605\u8bfb\u901f\u5ea6\uff0c\u7528\u6237\u4f53\u9a8c\u5e94\u8be5\u662f\u80fd\u591f\u4fdd\u8bc1\u7684\u3002<\/p>\n<p>\u5176\u4e2d src=\u201cdata:image\/jpeg;base64,0\u201d \u8868\u793a\u52a0\u8f7d\u4e00\u4e2a\u7a7a\u56fe\u7247\uff0c\u5185\u5bb9\u4e3a Base64\u7684\u5f62\u5f0f\u6587\u672c\uff0c\u65e0\u9700\u518d\u505a\u989d\u5916\u5730HTTP\u8bf7\u6c42\u3002<\/p>\n<p>\u5e78\u8fd0\u5730\u662f\uff0c\u9488\u5bf9\u8fd9\u79cd\u8bbe\u60f3\uff0cHTML\u56fd\u9645\u6807\u51c6\u7ec4\u7ec7\u6b63\u5728\u8bbe\u6cd5\u5c06\u5176\u53d8\u6210\u6807\u51c6\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p><strong>Loading Attribute<\/strong><br \/>The\u00a0<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTML\/Attributes\">loading\u00a0attribute<\/a>\u00a0allows the browser to defer loading of images\/iframes that are off-screen until the user scrolls near them.\u00a0Indicates if the element should be loaded lazily (<code>loading=\"lazy\"<\/code>) or loaded immediately (<code>loading=\"eager\"<\/code>).\u00a0\u00a0<strong>WIP:<\/strong>\u00a0<a class=\"external\" href=\"https:\/\/github.com\/whatwg\/html\/pull\/3752\" rel=\"noopener\">WHATWG PR #3752<\/a><\/p>\n<pre class=\"line-numbers language-html\"><code class=\" language-html\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>img <span class=\"token attr-name\">src<\/span><span class=\"token attr-value\"><span class=\"token punctuation\">=<\/span><span class=\"token punctuation\">\"<\/span>image.jpg<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">loading<\/span><span class=\"token attr-value\"><span class=\"token punctuation\">=<\/span><span class=\"token punctuation\">\"<\/span>lazy<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">alt<\/span><span class=\"token attr-value\"><span class=\"token punctuation\">=<\/span><span class=\"token punctuation\">\"<\/span>...<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token punctuation\">\/&gt;<\/span><\/span>\r\n<span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>iframe <span class=\"token attr-name\">src<\/span><span class=\"token attr-value\"><span class=\"token punctuation\">=<\/span><span class=\"token punctuation\">\"<\/span>video-player.html<span class=\"token punctuation\">\"<\/span><\/span> <span class=\"token attr-name\">loading<\/span><span class=\"token attr-value\"><span class=\"token punctuation\">=<\/span><span class=\"token punctuation\">\"<\/span>lazy<span class=\"token punctuation\">\"<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>iframe<span class=\"token punctuation\">&gt;<\/span><\/span><\/code><\/pre>\n<p>\u4e5f\u8bb8\u672a\u6765\uff0c\u60f3\u8981 img \u548c iframe\u8fd9\u4e9b\u8d44\u6e90\u5f02\u6b65\u52a0\u8f7d\uff0c\u53ea\u8981\u4e00\u4e2a loading\u5c5e\u6027\u6765\u8bbe\u7f6e\u4e00\u4e0b\u5373\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u5173\u6ce8\u7f51\u7edc\u901f\u5ea6\u591a\u4e00\u4e9b\uff0c\u65e0\u8bba\u662f\u8d22\u7ecf\u4eba\u58eb\u53e3\u4e2d\u7684\u65b0\u57fa\u5efa\u76845G\uff0c\u8fd8\u662f\u5bb6\u5ead\u8def\u7531\u5668\u4e2d\u76845G &hellip; <a href=\"https:\/\/ufqi.com\/blog\/5g-network-speed-webpage-lazyloading\/\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[41,42,7,6,2],"tags":[339,341,342,340,343],"_links":{"self":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts\/2181"}],"collection":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/comments?post=2181"}],"version-history":[{"count":15,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts\/2181\/revisions"}],"predecessor-version":[{"id":2198,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/posts\/2181\/revisions\/2198"}],"wp:attachment":[{"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/media?parent=2181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/categories?post=2181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ufqi.com\/blog\/wp-json\/wp\/v2\/tags?post=2181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}