测试1:移动端测试
userAgent',"Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1
从输入url开始记时，
onLoadStarted 输入url到下载开始费时ms
onLoadStarted 输入url到第二次下载开始费时ms
openPage domReading费时ms（不能截图）
onLoadFinished 页面资源下载完成费时ms，（包含js、css、img、iframe等，不包含ajax接口）（可以截图，有图片）
http://movie.weibo.com/moviehomepage 2019-01-12 16:12:49 529 onLoadStarted 149 openPage 419 onLoadFinished 425 https://www.baidu.com/ 2019-01-12 16:12:50 150 onLoadStarted 407 openPage 1074 onLoadFinished 1080 https://www.qidian.com/ 2019-01-12 16:12:51 540 onLoadStarted 110 onLoadStarted 578 openPage 578 onLoadFinished 3350
测试2:pc端测试
http://movie.weibo.com/moviehomepage 2019-01-12 16:15:03 772 onLoadStarted 142 openPage 1310 onLoadFinished 1316 https://www.baidu.com/ 2019-01-12 16:15:05 791 onLoadStarted 105 openPage 335 onLoadFinished 341 https://www.qidian.com/ 2019-01-12 16:15:06 310 onLoadStarted 105 openPage 2164 onLoadFinished 2169
附上新浪、百度、起点的首屏截图
更详细的，包含每个资源的加载顺序
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https://mu1.sinaimg.cn/frame.150x200/weiyinyue.music.sina.com.cn/movie_poster/184367_vertical.jpg 732 start https://mu1.sinaimg.cn/frame.150x200/weiyinyue.music.sina.com.cn/movie_poster/178684_vertical.jpg 733 start https://mu1.sinaimg.cn/frame.150x200/weiyinyue.music.sina.com.cn/movie_poster/185270_vertical.jpg 733 start https://mu1.sinaimg.cn/frame.150x200/weiyinyue.music.sina.com.cn/movie_poster/185537_vertical.jpg 734 https://tva1.sinaimg.cn/crop.0.0.628.628.180/6750ff8fjw8fddft6649xj20hg0hgajj.jpg 1382 https://tva3.sinaimg.cn/crop.0.0.628.628.180/6750ff8fjw8fddft6649xj20hg0hgajj.jpg 1383 http://movie.weibo.com/movieapp/homepage/top 1386 https://wx3.sinaimg.cn/crop.0.0.1904.1070.1000/6750ff8fgy1fz2jwzqx62j21gw0u0kjn.jpg 1394 https://mu1.sinaimg.cn/frame.150x200/weiyinyue.music.sina.com.cn/movie_poster/184692_vertical.jpg 1437 https://mu1.sinaimg.cn/frame.150x200/weiyinyue.music.sina.com.cn/movie_poster/185270_vertical.jpg 1453 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