[Optimized] Extra features
<script>if(!(window.fetch&&window.Promise&&[].includes&&Object.assign&&window.Map)){document.write('<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=default,fetch"></scr'+'ipt>')}</script>
This is the same as the previous, but also adds a polyfill for window.fetch()
. We add a window.fetch
check and loads the additional fetch
feature.
[Optimized] For modern browsers
<script>if(!(window.Promise&&[].includes&&Object.assign&&window.Map)){document.write('<script src="https://cdn.polyfill.io/v2/polyfill.min.js"></scr'+'ipt>')}</script>
This only includes polyfill.io when necessary, skipping it for modern browsers for faster load times.
[Usage] References
- API example (polyfill.io)
- List of features (polyfill.io)
[Usage] Default usage
<script src="https://cdn.polyfill.io/v2/polyfill.min.js"></script>
This is the default script for Polyfill.io.
Top comments (0)