大家真的用过yslow 这个工具吗？我比较好奇。。。。

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ylsow 插件已经在最新的火狐浏览器和谷歌浏览器里面  已经用不了
现在要继续使用只能通过下载ylsow 在 nodejs 社区的相关工具下使用
官网 http://yslow.org/

我现在使用 1YSlow for PhantomJS 插件配合nodejs 用用
                   2 浏览器审查元素 查看 网络 右键 导出为har 文件 在配合YSlow nodejs 插件使用
YSlow 一般用户分析前端站点 结构问题和页面加载的各种资源的服务器的配合问题

现在浏览器有了导出 har 文件 在一定成都上也可以分析用户终端的网络问题
国外由 一种技术 叫rum（ 真实用户体验监控）【rum real user monitoring】 一定程度上可以解决YSlow 无法在用户哪里使用的问题

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看看我整的 本地效果 略丑
代码在github  dotTpl
  master
  svg
  webshot
  webshot-book
* yslow
webjs@webjs-upc:~/codepalce/nodejslearn/app$
执行命令行后
生成的json 文件

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看下本站
^Cwebjs@webjs-upc:~/codepalce/nodejslearn/app$ node yslow.js
===
200
getYSlowURL
http://bbs.linuxtone.org/forum.php

Running (Async)....
=> overall:   74
=> load time: 3777
===
{ w: 920119,
  o: 74,
  u: 'http%3A%2F%2Fbbs.linuxtone.org%2F',
  r: 100,
  i: 'ydefault',
  lt: 3777,
  g:
   { ynumreq:
      { score: 20,
        message: 'This page has 12 external Javascript scripts.  Try combining them into one.\nThis page has 4 external stylesheets.  Try combining them into one.\nThis page has 18 external background images.  Try combining them with CSS sprites.',
        components: [] },
     ycdn:
      { score: 0,
        message: 'There are 98 static components that are not on CDN. <p>You can specify CDN hostnames in your preferences. See <a href="https://github.com/marcelduran/yslow/wiki/FAQ#wiki-faq_cdn">YSlow FAQ</a> for details.</p>',
        components: [Object] },
     yemptysrc: { score: 100, message: '', components: [] },
     yexpires:
      { score: 0,
        message: 'There are 13 static components without a far-future expiration date.',
        components: [Object] },
     ycompress:
      { score: 56,
        message: 'There are 4 plain text components that should be sent compressed',
        components: [Object] },
     ycsstop: { score: 100, message: '', components: [] },
     yjsbottom: { score: 100, message: '', components: [] },
     yexpressions:
      { score: 58,
        message: 'There is a total of 16 expressions',
        components: [Object] },
     yexternal:
      { message: 'Only consider this if your property is a common user home page.',
        components: [Object] },
     ydns:
      { score: 70,
        message: 'The components are split over more than 4 domains',
        components: [Object] },
     yminify:
      { score: 90,
        message: 'There is 1 component that can be minified',
        components: [Object] },
     yredirects: { score: 100, message: '', components: [] },
     ydupes: { score: 100, message: '', components: [] },
     yetags: { score: 100, message: '', components: [] },
     yxhr: { score: 100, message: '', components: [] },
     yxhrmethod: { score: 100, message: '', components: [] },
     ymindom:
      { score: 69,
        message: 'There are 1450 DOM elements on the page',
        components: [] },
     yno404: { score: 100, message: '', components: [] },
     ymincookie: { score: 100, message: '', components: [] },
     ycookiefree:
      { score: 90,
        message: 'There are 2 components that are not cookie-free',
        components: [Object] },
     ynofilter: { score: 100, message: '', components: [] },
     yimgnoscale: { score: 100, message: '', components: [] },
     yfavicon:
      { score: 95,
        message: 'Favicon is not cacheable',
        components: [] } } }
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