# using Promises

[JS](../..) ⟩ [async](..) ⟩ [Promise]() ⟩ using Promises

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* [getjson](custom-promises/getjson "mention")
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* [Promise.resolve()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/resolve)
* [Promise.reject()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/reject)
* [Promise() constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/Promise) - make Promise from scratch.
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