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This rule is triggered when PageSpeed Insights detects that you are using a synchronous version of the script instead of an asynchronous version.
Using asynchronous scripts means that the system can render your web page more quickly, rather than forcing users to wait for the script to complete downloading before rendering the web page. Asynchronous version of the script can be downloaded in the background.
Although most of the original scripts are synchronous, newer versions of scripts can be loaded asynchronously.
請(qǐng)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：
s3.buysellads.com/ac/bsa.js):Related blog post?- 默認(rèn)情況下為異步腳本static.chartbeat.com/js/chartbeat.js):Related documents、相關(guān)博文?- 默認(rèn)情況下為異步腳本static.getclicky.com/js)：相關(guān)博文disqus.com/count.js, disqus.com/embed.js):Related documents、相關(guān)博文?- 默認(rèn)情況下為異步腳本connect.facebook.net/.../all.js)：相關(guān)文檔、相關(guān)博文-Asynchronous script by defaultpagead2.googlesyndication.com/pagead/show_ads.js) ：相關(guān)文檔、Related blog postgoogle-analytics.com/ga.js)：相關(guān)文檔、Related blog post?- 默認(rèn)情況下為異步腳本www.googletagservices.com/tag/js/gpt.js)：相關(guān)文檔apis.google.com/js/plusone.js)：相關(guān)文檔、相關(guān)博文D7p9czrvs14ne. cloudfront.net/11/eum/rum.js)：相關(guān)文檔?- 默認(rèn)情況下為異步腳本assets.pinterest.com/js/pinit.js):相關(guān)文檔w.sharethis.com/button/buttons.js):相關(guān)文檔b.scorecardresearch.com/beacon.js)：Related documents-Asynchronous script by defaultplatform.stumbleupon.com/.../widgets.js)quantserve.com/quant.js):Related documents?- 默認(rèn)情況下為異步腳本platform.twitter.com/widgets.js):Related documents-Asynchronous script by defaultcdn.tynt.com/tc.js)mc.yandex.ru/metrika/watch.js)Except as other written, the content of this page is licensed under theCreative Commons Attribution 3.0 License, and code samples are licensed under the?Apache 2.0 License. For details, see ourSite Policies.