Browser Compatibility Testing of async attribute for external scripts
The boolean async attribute on script elements allows the external JavaScript file to run when it's available, without delaying page load first.
With LambdaTest you can test your website on 2000+ browser and OS combinations for cross browser compatibility issues and ensure that your webpage fallbacks are working fine on browsers that do not support async attribute for external scripts.
async attribute for external scriptsChrome 4 to 7 doesn't supports. Chrome 8 to 70 supports async attribute for external scripts property.
Firefox 2 to 3.5 dosen't supports. Firefox 3.6 to 63 supports async attribute for external scripts property.
IE browser version 6 to 9 doesn't support. IE browser version 10 and 11 support async attribute for external scripts.
Safari browser version 3.1 to 4 doesn't supports. This property is not supported by default but can be enabled by Safari 5 version. Safari browser version 5.1 to 12 supportsasync attribute for external scripts.
Microsoft Edge browser version 12 to 18 doesn't supports async attribute for external scripts.
Opera version 10.1 and 23 doesn't supports.Opera version 24 and 53 doesn't supports async attribute for external scripts.
"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.
All websites and webapps use collections of a lot of browser technologies and elements. Not all of these elements are supported by all browsers and browser versions. At LambdaTest you can test your website on all browsers and browser versions and easily debug browser compatibility issues in real time.
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Perfrom cross browser testing of your website/ web app across all IE verions using LambdaTest
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