What are the compatibility differences between JavaScript engines?
JavaScript engines like V8, SpiderMonkey, and JavaScriptCore have different implementations. V8 is used in Chrome and Node.js, while SpiderMonkey is used in Firefox. Each engine may support different features or versions of ECMAScript.
Can you give examples of features that might not be supported across all engines?
Sure! For instance, optional chaining and nullish coalescing are supported in newer versions of V8 and SpiderMonkey, but older engines may not support them.
How can I check which features are supported by a specific engine?
You can use resources like MDN Web Docs or Can I use to check feature support across different JavaScript engines.
Is there a way to write code that works across all engines?
Yes, you can use transpilers like Babel to convert your modern JavaScript code into a version that is compatible with older engines.
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