Quick-and-easy deferred promise (like from q.defer()) - handy for modal dialogs:
q.defer()
class Deferred { constructor() { this.promise = new Promise((resolve, reject) => { this.resolve = resolve; this.reject = reject; }); } } // example function dialog() { const deferred = new Deferred(); // create dialog here ... // Finally, set up the button click handlers dialog.okButton.onclick = deferred.resolve; dialog.cancelButton.onclick = deferred.reject; return deferred.promise; } // Alternatively function dialog() { const { promise, resolve, reject } = new Deferred(); // etc... dialog.okButton.onclick = resolve; dialog.cancelButton.onclick = reject; return promise; } dialog().then(/* success! */, /* cancelled */);
Better than wrapping all of that code inside of a Promise constructor every time, in my opinion.
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Quick-and-easy deferred promise (like from
q.defer()
) - handy for modal dialogs:Better than wrapping all of that code inside of a Promise constructor every time, in my opinion.