{"id":440,"date":"2022-07-06T08:50:42","date_gmt":"2022-07-06T00:50:42","guid":{"rendered":"http:\/\/gjweb.top\/?p=440"},"modified":"2022-07-06T08:50:43","modified_gmt":"2022-07-06T00:50:43","slug":"%e6%b5%85%e8%b0%88%e5%89%8d%e7%ab%af%e7%9b%91%e6%8e%a7%e4%ba%8c","status":"publish","type":"post","link":"https:\/\/gjweb.top\/?p=440","title":{"rendered":"\u6d45\u8c08\u524d\u7aef\u76d1\u63a7(\u4e8c)"},"content":{"rendered":"\n

\u9875\u9762\u52a0\u8f7d\u65f6\u95f4<\/h2>\n\n\n\n

\u9636\u6bb5\u8ba1\u7b97\u8868<\/h3>\n\n\n\n
\u5b57\u6bb5<\/th>\u63cf\u8ff0<\/th>\u8ba1\u7b97\u65b9\u5f0f<\/th>\u610f\u4e49<\/th><\/tr><\/thead>
unload<\/td>\u524d\u4e00\u4e2a\u9875\u9762\u5378\u8f7d\u8017\u65f6<\/td>unloadEventEnd – unloadEventStart<\/td>–<\/td><\/tr>
redirect<\/td>\u91cd\u5b9a\u5411\u8017\u65f6<\/td>redirectEnd – redirectStart<\/td>\u91cd\u5b9a\u5411\u7684\u65f6\u95f4<\/td><\/tr>
appCache<\/td>\u7f13\u5b58\u8017\u65f6<\/td>domainLookupStart – fetchStart<\/td>\u8bfb\u53d6\u7f13\u5b58\u7684\u65f6\u95f4<\/td><\/tr>
dns<\/td>DNS\u89e3\u6790\u8017\u65f6<\/td>domainLookupEnd – domainLookupStart<\/td>\u53ef\u89c2\u5bdf\u57df\u540d\u89e3\u6790\u670d\u52a1\u662f\u5426\u6b63\u5e38<\/td><\/tr>
tcp<\/td>TCP\u8fde\u63a5\u8017\u65f6<\/td>connectEnd – connectStart<\/td>\u5efa\u7acb\u8fde\u63a5\u7684\u8017\u65f6<\/td><\/tr>
ssl<\/td>\u5b89\u5168\u8fde\u63a5\u8017\u65f6<\/td>connectEnd – secureConnectiuonstart<\/td>\u53cd\u6620\u6570\u636e\u5b89\u5168\u8fde\u63a5\u5efa\u7acb\u8017\u65f6<\/td><\/tr>
TTFB<\/td>\u7f51\u7edc\u8bf7\u6c42\u8017\u65f6<\/td>responseStart – requestStart<\/td>TTFB\u662f\u53d1\u51fa\u9875\u9762\u8bf7\u6c42\u5230\u63a5\u6536\u6570\u636e\u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u65f6\u95f4(ms)<\/td><\/tr>
response<\/td>\u54cd\u5e94\u6570\u636e\u4f20\u8f93\u8017\u65f6`<\/td>responseEnd – resoibseStart<\/td>\u89c2\u5bdf\u7f51\u7edc\u662f\u5426\u6b63\u5e38<\/td><\/tr>
dom<\/td>DOM\u89e3\u6790\u8017\u65f6<\/td>domInteractive – responseEnd<\/td>\u89c2\u5bdfDOM\u7ed3\u6784\u662f\u5426\u5408\u7406,\u662f\u5426\u6709JS\u963b\u585e\u9875\u9762\u89e3\u6790<\/td><\/tr>
dcl<\/td>DOMDOntentLoaded\u4e8b\u4ef6\u8017\u65f6<\/td>domContentLoadedEventEnd – domContentLoadedEventStart<\/td>\u5f53HTML\u6587\u6863\u5b8c\u6210\u52a0\u8f7d\u548c\u89e3\u6790\u4e4b\u540e,DOMDOntentLoaded\u4e8b\u4ef6\u7b49\u5f85\u6837\u5f0f\u8868\\\u56fe\u50cf\u5b8c\u6210\u52a0\u8f7d\u7684\u65f6\u957f<\/td><\/tr>
resources<\/td>\u8d44\u6e90\u52a0\u8f7d\u8017\u65f6<\/td>domComplete – domContentLoadedEventEnd<\/td>\u53ef\u89c2\u5bdf\u6587\u6863\u6d41\u662f\u5426\u8fc7\u5927<\/td><\/tr>
domReady<\/td>DOM\u9636\u6bb5\u6e32\u67d3\u8017\u65f6<\/td>rdomContentLoadedEventEnd – fetchStart<\/td>DOM\u548c\u9875\u9762\u8d44\u6e90\u52a0\u8f7d\u5b8c\u6210\u65f6\u95f4,\u4f1a\u89e6\u53d1 domDContentLoaded \u4e8b\u4ef6<\/td><\/tr>
\u9996\u6b21\u6e32\u67d3\u8017\u65f6<\/td>–<\/td>responseEnd – fetchStart<\/td>\u52a0\u8f7d\u6587\u6863\u5230\u770b\u5230\u7b2c\u4e00\u9488\u975e\u7a7a\u56fe\u50cf\u7684\u65f6\u95f4,(\u767d\u5c4f\u65f6\u95f4)<\/td><\/tr>
\u9996\u6b21\u53ef\u4ea4\u4e92\u65f6\u95f4<\/td>–<\/td>domInteractive – fetchStart<\/td>DOM\u6811\u89e3\u6790\u5b8c\u6210\u65f6\u95f4,\u6b64\u65f6 document.readyState \u4e3a interactive<\/td><\/tr>
\u9996\u5305\u65f6\u95f4\u8017\u65f6<\/td>–<\/td>responseSyary – domainLookupStart<\/td>DNS\u89e3\u6790\u5230\u54cd\u5e94\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282<\/td><\/tr>
\u9875\u9762\u5b8c\u5168\u52a0\u8f7d\u65f6\u95f4<\/td>–<\/td>loadEventStart – fetchStart<\/td>–<\/td><\/tr>
onLoad<\/td>onLoad\u4e8b\u4ef6\u8017\u65f6<\/td>loadEventEnd – loadEventSatrt<\/td>–<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u5b9e\u73b0<\/h3>\n\n\n\n

\u503c\u5f97\u6ce8\u610f\u7684\u662f performance.timing \u8fd9\u4e2a\u5c5e\u6027\u5728MDN\u4e0a\u6807\u8bc6\u4e3a\u5e9f\u5f03\u5c5e\u6027, \u63a8\u8350\u66ff\u6362\u5c5e\u6027PerformanceTiming<\/p>\n\n\n\n

onload(function(){
    var perfEntries = performance.getEntriesByType(\"navigation\");
    setTimeout(()=>{
      const {
        fetchStart,
        connectStart,
        connectEnd,
        requestStart,
        responseStart,
        responseEnd,
        domInteractive,
        domContentLoadedEventStart,
        domContentLoadedEventEnd,
        loadEventStart
      } = perfEntries[0];
      
      let log = {
        kind:\"experience\",
        type:'timing',
        connectTime:connectStart -connectEnd , \/\/\u8fde\u63a5\u65f6\u95f4
        ttfbTime:responseStart - requestStart, \/\/ \u9996\u5b57\u8282\u5230\u8fbe\u65f6\u95f4
        responseTime:responseEnd - responseStart, \/\/ \u54cd\u5e94\u7684\u8bfb\u53d6\u65f6\u95f4
        domContentLoadedTime:domContentLoadedEventEnd - domContentLoadedEventStart,\/\/ \u8d44\u6e90\u5168\u90e8\u52a0\u8f7d\u5b8c\u6210\u65f6\u95f4
        timeToInteractive:domInteractive - fetchStart, \/\/ \u9996\u6b21\u53ef\u4ea4\u4e92\u65f6\u95f4
        loadTime:loadEventStart - fetchStart, \/\/ \u5b8c\u6574\u7684\u52a0\u8f7d\u65f6\u95f4
      }
      console.log(\"\u7528\u6237\u4f53\u9a8c\u76d1\u63a7\",log)
    },3000)<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u6027\u80fd\u6307\u6807<\/h2>\n\n\n\n
\u5b57\u6bb5<\/th>\u63cf\u8ff0<\/th>\u5907\u6ce8<\/th><\/tr><\/thead>
FP<\/td>\u9996\u6b21\u7ed8\u5236<\/td>\u5305\u62ec\u81ea\u5b9a\u4e49\u80cc\u666f\uff0c\u8868\u793a\u7684\u9996\u6b21\u5c06\u50cf\u7d20\u7ed8\u5236\u5230\u5c4f\u5e55\u7684\u65f6\u95f4<\/td><\/tr>
FCP<\/td>\u9996\u6b21\u5185\u5bb9\u7ed8\u5236<\/td>\u7b2c\u4e00\u4e2aDOM\u6e32\u67d3\u5230\u5c4f\u5e55\u7684\u65f6\u95f4\uff08\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u767d\u5c4f\u65f6\u95f4\uff09<\/td><\/tr>
FMP<\/td>\u9996\u6b21\u6709\u610f\u4e49\u7ed8\u5236<\/td>\u9875\u9762\u6709\u610f\u4e49\u7684\u5185\u5bb9\u7ed8\u5236\u65f6\u95f4\uff08\u6d4f\u89c8\u5668\u4e0d\u77e5\u9053\u90a3\u4e2a\u5143\u7d20\u662f\u6709\u610f\u4e49\u7684\uff0c\u9700\u8981\u5728\u6307\u5b9a\u7684html\u4e2d\u52a0\u5165 elementtiming\u5c5e\u6027\uff0c\u503c\u53ef\u4ee5\u968f\u610f\u586b\u5199\uff09<\/td><\/tr>
LCP<\/td>\u6700\u5927\u5185\u5bb9\u6e32\u67d3<\/td>\u4ee3\u8868\u5728\u8bd5\u56fe\u4e2d\u6700\u5927\u7684\u5143\u7d20\u7684\u52a0\u8f7d\u65f6\u95f4<\/td><\/tr>
DCL<\/td>DOM\u52a0\u8f7d\u5b8c\u6210<\/td>HTML\u52a0\u8f7d\u89e3\u6790\u4e4b\u540e\uff0cDOMCIntentLoaded\u65f6\u95f4\u88ab\u89e6\u53d1\u7684\u65f6\u95f4\uff0c\u65e0\u9700\u7b49\u5f85\u6837\u5f0f\u8868\u3001\u56fe\u50cf\u7b49\u52a0\u8f7d<\/td><\/tr>
L<\/td>onLoad<\/td>\u5f53\u4f9d\u8d56\u7684\u8d44\u6e90\u5168\u90e8\u88ab\u52a0\u8f7d\u5b8c\u6bd5\u4e4b\u540e\u89e6\u53d1\u7684\u65f6\u95f4<\/td><\/tr>
TTI<\/td>\u53ef\u4ea4\u4e92\u65f6\u95f4<\/td>\u6807\u8bb0\u5e94\u7528\u53ca\u8fdb\u884c\u6e32\u67d3\u5e76\u53ef\u4ee5\u76f8\u5e94\u7528\u6237\u8f93\u5165\u7684\u65f6\u95f4<\/td><\/tr>
FID<\/td>\u9996\u6b21\u8f93\u5165\u5ef6\u8fdf<\/td>\u7528\u6237\u9996\u6b21\u548c\u9875\u9762\u4ea4\u4e92\u65f6\u9875\u9762\u7684\u54cd\u5e94\u65f6\u95f4\uff08\u53cd\u5c04\u5f27\u65f6\u95f4\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u5b9e\u73b0<\/h3>\n\n\n\n
function timing(){
   let FMP,LCP;
  \/\/ \u6dfb\u52a0\u6027\u80fd\u6761\u76ee\u7684\u89c2\u5bdf\u8005
  new PerformanceObserver((entryList,observer)=>{
    let perfEntries = entryList.getEntries();
    FMP = perfEntries[0];
    observer.disconnect(); \/\/\u53d6\u6d88\u89c2\u5bdf
  }).observe({entryTypes:['element']}); \/\/\u89c2\u5bdf\u9875\u9762\u4e2d\u6709\u610f\u4e49\u7684\u5143\u7d20
\u200b
  new PerformanceObserver((entryList,observer)=>{
    let perfEntries = entryList.getEntries();
    LCP = perfEntries[0];
    observer.disconnect(); \/\/\u53d6\u6d88\u89c2\u5bdf
  }).observe({entryTypes:['largest-contentful-paint']}); \/\/ \u89c2\u5bdf\u9875\u9762\u6700\u5927\u6e32\u67d3\u5143\u7d20
\u200b
  \/**TTI\u9996\u6b21\u5ef6\u8fdf OR FIO\u5904\u7406\u5ef6\u8fdf\u65f6\u95f4 *\/
  new PerformanceObserver((entryList,observer)=>{
    let lastEvent = getLastEvent()
    let firstInput = entryList.getEntries()[0];
    if(firstInput){
      \/\/inputDelay(\u53cd\u5c04\u5f27\u65f6\u95f4) = processingStart(\u5f00\u59cb\u5904\u7406\u7684\u65f6\u95f4) - startTime(\u5f00\u70b9\u51fb\u7684\u65f6\u95f4) 
      let inputDelay = firstInput.processingStart - firstInput.startTime;
      let duration = firstInput.duration; \/\/ \u5904\u7406\u7684\u8017\u65f6
      if(inputDelay>0 || duration>0){
        let log = {
          kind:\"experience\", \/\/ \u7528\u6237\u4f53\u9a8c\u6307\u6807
          type:\"firstInputDelay\", \/\/ \u9996\u6b21\u8f93\u5165\u5ef6\u8fdf
          inputDelay:inputDelay, \/\/ \u5ef6\u8fdf\u7684\u65f6\u95f4
          duration:duration, \/\/ \u5904\u7406\u7684\u65f6\u95f4
          startTime:firstInput.startTime, \/\/ \u53cd\u5c04\u5f27\u65f6\u95f4
          selector:lastEvent?getSelector(lastEvent.path || lastEvent.target) : \"\", \/\/ \u70b9\u51fb\u7684\u5143\u7d20
        }
        console.log(\"\u9996\u6b21\u4ea4\u4e92\u65f6\u957f\",log)
      }
    }
    observer.disconnect(); \/\/\u53d6\u6d88\u89c2\u5bdf
  }).observe({type:\"first-input\",buffered:true}); \/\/ \u89c2\u5bdf\u7b2c\u4e00\u6b21\u4ea4\u4e92
   
  onload(()=>{
      setTimeout(()=>{
          let FP = performance.getEntriesByName(\"first-paint\")[0]
          let FCP = performance.getEntriesByName(\"first-contentful-paint\")[0];
          let paint_log = {
            kind:\"experience\", \/\/\u7528\u6237\u4f53\u9a8c\u6307\u6807,
            type:'paint', \/\/ \u7edf\u8ba1\u6bcf\u4e2a\u9636\u6bb5\u7684\u65f6\u95f4
            firstPaint:FP.startTime, \/\/ \u9996\u6b21\u7ed8\u5236\u65f6\u95f4
            firstContentPaint:FCP.startTime, \/\/ \u9996\u6b21\u5185\u5bb9\u7ed8\u5236\u65f6\u95f4
            firstMeaningfulPaint:FMP.startTime, \/\/ \u9996\u6b21\u610f\u4e49\u7ed8\u5236\u65f6\u95f4
            largestContentfulPaint:LCP.startTime, \/\/\u6700\u5927\u5185\u5bb9\u6e32\u67d3\u65f6\u95f4
          }
          console.log(\"-----\u6027\u80fd\u76d1\u63a7---\",paint_log)
      },2000)
  })
}<\/code><\/pre>\n\n\n\n
\u4e0a\u9762\u8868\u683c\u4e2d\u63d0\u5230\uff0c\u5728\u83b7\u53d6\u9996\u6b21\u6709\u610f\u4e49\u7ed8\u5236\u7684\u8017\u65f6\u7684\u65f6\u5019\uff0c\u9700\u8981\u5728HTML\u4e2d\u6dfb\u52a0\u4e00\u4e2a elementtiming \u5c5e\u6027\uff0c\u5c5e\u6027\u503c\u53ef\u4ee5\u968f\u610f\u3002 \u793a\u4f8b\u5982\u4e0b<\/p>\n\n\n\n
<!DOCTYPE html>
<html lang=\"en\">
\u200b
<head>
  <meta charset=\"UTF-8\">
  <meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">
  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">
  <title>\u524d\u7aef\u76d1\u63a7SDK<\/title>
  <script src=\"https:\/\/cdn.bootcdn.net\/ajax\/libs\/axios\/0.27.2\/axios.js\"><\/script>
<\/head>
\u200b
<body>
  <div class=\"container\">
    <p>\u6d4b\u8bd5\u4e00\u4e0b\u6e32\u67d3\u901f\u5ea6<\/p>
  <\/div>
\u200b
  <script>
    setTimeout(()=>{
      let content = document.getElementsByClassName(\"container\")[0];
      let h1 = document.createElement(\"h1\");
      h1.innerHTML = \"\u6211\u4e3a\u5565\u662f\u6709\u610f\u4e49\u7684\u5185\u5bb9\u5440,\u56e0\u4e3a\u6211\u6709elementtiming\";
      h1.setAttribute(\"elementtiming\",\"xxx\")
      content.appendChild(h1)
    },2000)
  <\/script>
<\/body>
<\/html><\/code><\/pre>\n\n\n\n
DEMO\u5730\u5740,\u6bcf\u4e00\u4e2a\u529f\u80fd\u90fd\u5728\u4e00\u4e2a\u5355\u72ec\u7684commit\u4e2d<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u9875\u9762\u52a0\u8f7d\u65f6\u95f4 \u9636\u6bb5\u8ba1\u7b97\u8868 \u5b57\u6bb5 \u63cf\u8ff0 \u8ba1\u7b97\u65b9\u5f0f \u610f\u4e49 unload \u524d\u4e00\u4e2a\u9875\u9762\u5378\u8f7d\u8017\u65f6 unloadEvent […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[],"class_list":["post-440","post","type-post","status-publish","format-standard","hentry","category-51"],"_links":{"self":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=440"}],"version-history":[{"count":1,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/440\/revisions"}],"predecessor-version":[{"id":441,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/440\/revisions\/441"}],"wp:attachment":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}