javascriptページレンダリング速度テストスクリプト共有
/* , PAGE_SPEED_TIME */
<html><script type="text/javascript">/*tag*/PAGE_SPEED_TIME = [new Date().getTime()];</script><head>
......
</head>
......
/* ， */
</body>
<script src="http://ossweb-img.qq.com/images/js/pagespeed/page_speed_v2.js"></script></html>
/* PageSpeed */
;(function() {
PageSpeed = {};/* var , window.PageSpeed */
/**
* createScript
*
* @param String a script src
* @param String b script id
*/
PageSpeed.createScript = function(a, b) {
var c = null;
if (document.getElementById(b)) { /* script */
c = document.getElementById(b)
} else { /* , script */
c = document.createElement('script');
var d = null;
if (document.getElementsByTagName) {
d = document.getElementsByTagName('head')[0] || document.documentElement;
} else {
d = document.documentElement;
}
d.insertBefore(c, d.firstChild); /* insertBefore , script */
}
/* */
{
c.setAttribute('type', 'text/html');
c.setAttribute('style', 'display:none;');
c.setAttribute('charset', 'gb2312');
c.setAttribute('id', b);
c.setAttribute('src', a);
}
return c; /* script */
};
/**
* submitDataForPageSpeed
*
* @param Object a Map
*/
PageSpeed.submitDataForPageSpeed = function(a) {
var b = {
'name': '',
'rate': 0
};
b.name = a.name;
b.rate = a.rate;
/* a.PAGE_SPEED_TIME */
b['1'] = a.PAGE_SPEED_TIME[a.PAGE_SPEED_TIME.length - 1] - a.PAGE_SPEED_TIME[0];
for (var i = 1; i < a.PAGE_SPEED_TIME.length - 1; i++) {
b[(i + 1) + ''] = a.PAGE_SPEED_TIME[i] - a.PAGE_SPEED_TIME[0]
}
/* */
var c = 'http://pagespeed-ied.qq.com/r.cgi';
/* b , query string */
var d = [];
for (var p in b) {
d.push(p + '=' + b[p])
}
c += '?' + d.join('&');
/* script */
PageSpeed.createScript(c, 'submitForPageSpeed')
};
/**
* defaultSubmit
*
*/
PageSpeed.defaultSubmit = function() {
var a = '';
try {
a = location.host
} catch(e) {}
var b = {
'name': a,
'rate': 1,
'PAGE_SPEED_TIME': []
};
if (!b.name) {
return
}
if (! (typeof(PAGE_SPEED_TIME) == 'object' && PAGE_SPEED_TIME instanceof Array)) {
return
}
/* */
PAGE_SPEED_TIME.push(new Date().getTime());
b.PAGE_SPEED_TIME = PAGE_SPEED_TIME;
/*
* aaa, a ?
* try ... catch aaaa , ? aaa?
*/
var aaa = '';
try {
aaaa = location.host
} catch(e) {}
var c = Math.floor(Math.random() * 10000);
if (aaa == "ktv.qq.com" || aaa == "ttd.qq.com" || aaa == "tian.qq.com" || aaa == "sura.qq.com" || aaa == "gw.tnt.qq.com" || aaa == "007.qq.com") {
c = Math.floor(Math.random() * 1000);
}
/* */
if (c <= b.rate * 1) {
PageSpeed.submitDataForPageSpeed(b);
}
};
/**
* submit ( CDN ?)
*
* @param String a
*/
PageSpeed.submit = function(a) {
var b = PageSpeed.cdn_page_speed_submitData;
var c = {};
for (var p in b) {
c[p] = b[p]
}
c.name = a || c.name;
PageSpeed.submitDataForPageSpeed(c);
}
})();
try {
/* 1 */
setTimeout(function() {
PageSpeed.defaultSubmit()
},
1000);
} catch(e) {}
/* , 32 16 , ETag */
/* |xGv00|ca82276cd78ac911d3d4310ba1408236 */