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Other browser vendors needed to overhaul their interpreters to compete.Apple developed the Nitro engine for its Safari browser, which had 30% better performance than its predecessor.Mozilla leveraged portions of Nitro to improve its own SpiderMonkey engine.
- SpiderMonkey is developed by Mozilla for use in Firefox and its forks. The GNOME Shell uses it for extension support.
- Hermes is developed by Facebook for Androidapps using the React Native framework.
- ^'Big browser comparison test: Internet Explorer vs. Firefox, Opera, Safari and Chrome'. PC Games Hardware. Computec Media AG. Retrieved 2010-06-28.
- ^'Lifehacker Speed Tests: Safari 4, Chrome 2'. Lifehacker. Retrieved 2010-06-28.
- ^'Mozilla asks, 'Are we fast yet?''. Wired. Retrieved 18 January 2019.
- ^Safari 5 Released
- ^Stachowiak, Maciej (November 9, 2008). 'Companies and Organizations that have contributed to WebKit'. WebKit Wiki. Retrieved April 13, 2019.
- ^Belfiore, Joe (2020-01-15), New year, new browser – The new Microsoft Edge is out of preview and now available for download, Microsoft
- ^'Microsoft Edge and Chromium Open Source: Our Intent'. Microsoft Edge Team. 6 December 2018. Retrieved 8 December 2018.
Many websites take advantage of user locationin order to provide a more relevant experience for their users. For example, a weather websitemight show the local forecast for a user's area, once the user has granted the website permission toaccess their location.
If you're building a UI that changes depending on where the user is located, you probably want tomake sure that the site behaves correctly in different places around the world. To overrideyour geolocation in Chrome DevTools:
Press Command+Shift+P (Mac) orControl+Shift+P (Windows, Linux, Chrome OS) to open the Command Menu.
sensors, select Show Sensors, and press Enter.The Sensors tab opens up at the bottom of your DevTools window.
From the Geolocation list select one of the preset cities, like Tokyo,or select Custom location to enter custom longitude and latitude coordinates, or selectLocation unavailable to see how your site behaves when the user's location is not available.