Created
April 13, 2018 12:25
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(function() { | |
handleAddListener('load', getTiming) | |
function handleAddListener(type, fn){ | |
if(window.addEventListener){ | |
window.addEventListener(type, fn) | |
}else{ | |
window.attachEvent('on' + type, fn) | |
} | |
} | |
function getTiming () { | |
try { | |
var time = performance.timing; | |
var timingObj = {}; | |
var loadTime = (time.loadEventEnd - time.loadEventStart) / 1000; | |
if (loadTime < 0) { | |
setTimeout(function() { | |
getTiming(); | |
}, 200); | |
return; | |
} | |
timingObj['重定向时间'] = (time.redirectEnd - time.redirectStart) / 1000; | |
timingObj['DNS 解析时间'] = (time.domainLookupEnd - time.domainLookupStart) / 1000; | |
timingObj['TCP 完成握手时间'] = (time.connectEnd - time.connectStart) / 1000; | |
timingObj['HTTP 请求响应完成时间'] = (time.responseEnd - time.requestStart) / 1000; | |
timingObj['DOM 开始加载前所花费时间'] = (time.responseEnd - time.navigationStart) / 1000; | |
timingObj['DOM 加载完成时间'] = (time.domComplete - time.domLoading) / 1000; | |
timingObj['DOM 结构解析完成时间'] = (time.domInteractive - time.domLoading) / 1000; | |
timingObj['脚本加载时间'] = (time.domContentLoadedEventEnd - time.domContentLoadedEventStart) / 1000; | |
timingObj['onload 事件时间'] = (time.loadEventEnd - time.loadEventStart) / 1000; | |
timingObj['页面完全加载时间'] = (timingObj['重定向时间'] + timingObj['DNS 解析时间'] + timingObj['TCP 完成握手时间'] + timingObj['HTTP 请求响应完成时间'] + timingObj['DOM 结构解析完成时间'] + timingObj['DOM 加载完成时间']); | |
for (item in timingObj) { | |
console.log(item + ":" + timingObj[item] + '毫秒'); | |
} | |
console.log(performance.timing); | |
} catch (e) { | |
console.log(timingObj) | |
console.log(performance.timing); | |
} | |
} | |
})(); |
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