Fetch api

Question

Should i focus on fetch api or xml ajax?

Answer 1

The fetch API is the newer version of XmlHttpRequest. In order to understand fetch properly, I'd recommend learning XmlHttpRequest first as it will give you a steady foundation about requests and responses.

After that, you'll need to learn promises in order to use fetch.

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When should you use fetch?

If you are certain that your site or web application will not be opened in Internet Explorer, then it is safe to use fetch.