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An ESnext spec-compliant String.prototype.endsWith shim/polyfill/replacement that works as far down as ES3.

This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.

Because String.prototype.endsWith depends on a receiver (the this value), the main export takes the string to operate on as the first argument.

Other polyfills for String.prototype.endsWith are available:

Installation

Via npm:

npm install string.prototype.endswith

Then, in Node.js:

var endsWith = require('string.prototype.endswith');
<script src="https://bundle.run/string.prototype.endswith"></script>

NOTE: It's recommended that you install this module using a package manager such as npm, because loading multiple polyfills from a CDN (such as bundle.run) will lead to duplicated code.

Notes

Polyfills + test suites for String.prototype.startsWith and String.prototype.contains are available, too.

Author

twitter/mathias
Mathias Bynens

License

This polyfill is available under the MIT license.

Tests

Simply clone the repo, npm install, and run npm test

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A robust & optimized ES3-compatible polyfill for the `String.prototype.endsWith` method in ECMAScript 6.

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