Javascript Polyfills Explained Simply
What is a polyfill?
A polyfill is a piece of code that is used to provide/fill-in some feature on older browsers that don't support that feature by default. For example, there are some JavaScript functions/features that Google Chrome supports but Internet Explorer does not support (like Promises or Object.assign()). In order to ensure that the website doesn't break in IE, a developer could write a piece of polyfill code that simulates the missing functionality that IE does not support.
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❌ Correction:
At 7:58, I said "signature" when I should have said "reference".
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