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Browser Compatibility Testing of JAVASCRIPT ECMAScript 5

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Browser Compatibility Testing For CSS text-stroke and text-fill


Full support for the ECMAScript 5 specification. Features include Function.prototype.bind, Array methods like indexOf, forEach, map & filter, Object methods like defineProperty, create & keys, the trim method on Strings and many more.

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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 JAVASCRIPT ECMA Script 5.

All Browser Versions

Real Time Testing on Chrome browser


Google Chrome

Chrome browser version 4 to Chrome browser version 22 partially supports. Enabled in Chrome through the "experimental Web Platform features" flag in chrome://flags. Chrome browser version 23 to Chrome browser version 70 supports JAVASCRIPT ECMAScript 5.

Mozilla Firefox

Mozilla Firefox browser version 2 to Mozilla Firefox browser version 20 partially supports JAVASCRIPT ECMAScript 5 and partial support in Mozilla Firefox refers to supporting an older version of the specification. Firefox version 22 to 63 supports JAVASCRIPT ECMAScript 5.

Internet Explorer

IE browser version 6 to 8 doesn't supports it. IE browser version 9 partially supports it and partial support in IE refers to supporting an older version of the specification. IE browser version 10 and 11 supports JAVASCRIPT ECMAScript 5.


Safari browser version 3.1 to Safari browser version 5.1 partially supports. Safari browser version 6 to Safari browser version 12 supports JAVASCRIPT ECMAScript 5.

Microsoft Edge

Microsoft Edge browser version 12 to Microsoft Edge browser version 18 supports JAVASCRIPT ECMAScript 5 property.


Opera browser version 10.1 and 12.1 partially supports JAVASCRIPT ECMAScript 5. Opera browser version 32 to Opera browser version 53 supports JAVASCRIPT ECMAScript 5.

Information sourced from

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

Other Browser Elements and Properties

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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