A robust & optimized polyfill for the
String.prototype.startsWith method in ECMAScript 6.
Other polyfills for
String.prototype.startsWith are available:
- https://github.com/paulmillr/es6-shim/blob/d8c4ec246a15e7df55da60b7f9b745af84ca9021/es6-shim.js#L166-L173 by Paul Miller (
fails some tests: 1, 2passes all tests)
- https://github.com/google/traceur-compiler/blob/315bdad05d41de46d25337422d66686d63100d7a/src/runtime/polyfills/String.js#L19-L37 by Google (
fails a lot of testsnow uses this polyfill and passes all tests)
npm install string.prototype.startswith
Then, in Node.js:
var startsWith = ;
In a browser:
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.
This polyfill is available under the MIT license.