當PageSpeed Insights檢測到您正在使用同步版（而非異步版）腳本時，就會觸發(fā)此規(guī)則。

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雖然最初的大多數(shù)腳本是同步的，但較新版腳本均可實現(xiàn)異步加載。

請確保您使用的是異步版腳本。以下熱門腳本均支持加載異步腳本：

• BuySellAds (s3.buysellads.com/ac/bsa.js):相關(guān)博文?- 默認情況下為異步腳本
• ChartBeat (static.chartbeat.com/js/chartbeat.js)：相關(guān)文檔、?? ???— ????? ???? ????
• Clicky (static.getclicky.com/js):?? ???
• Disqus (disqus.com/count.js, disqus.com/embed.js)：?? ??,相關(guān)博文?- 默認情況下為異步腳本
• Facebook (connect.facebook.net/.../all.js)：相關(guān)文檔、相關(guān)博文?- 默認情況下為異步腳本
• Google AdSense (pagead2.googlesyndication.com/pagead/show_ads.js) ：相關(guān)文檔、?? ???
• Google Analytics（分析）(google-analytics.com/ga.js)：相關(guān)文檔,?? ???— ????? ???? ????
• Google DFP廣告管理系統(tǒng)GPT (www.googletagservices.com/tag/js/gpt.js)：相關(guān)文檔
• Google+ (apis.google.com/js/plusone.js):相關(guān)文檔、相關(guān)博文
• New Relic (d7p9czrvs14ne.cloudfront.net/11/eum/rum.js):?? ???- 默認情況下為異步腳本
• Pinterest (assets.pinterest.com/js/pinit.js)：?? ??
• Shareaholic:相關(guān)文檔?- 默認情況下為異步腳本
• ShareThis (w.sharethis.com/button/buttons.js):相關(guān)文檔
• ScorecardResearch/Comscore (b.scorecardresearch.com/beacon.js):?? ??— ????? ???? ????
• StumbleUpon (platform.stumbleupon.com/.../widgets.js)
• Quantcast (quantserve.com/quant.js)：相關(guān)文檔?- 默認情況下為異步腳本
• ??? (platform.twitter.com/widgets.js):相關(guān)文檔?- 默認情況下為異步腳本
• Tynt (cdn.tynt.com/tc.js)
• Yandex (mc.yandex.ru/metrika/watch.js)

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