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JavaScript delayed promise
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| // Sometimes it is helpful/necessary to create a promise, that delays the execution. | |
| // This snippet returns a promise, that is resolved after a given timeout. | |
| // The `min` and `max` arguments are used to calcuate a random delay in the range between `min` and `max` | |
| let delay = (min, max) => { | |
| return new Promise(resolve => { | |
| setTimeout(resolve, Math.random() * (max - min) + min) | |
| }) | |
| } | |
| // In your actual code you use it as follows: | |
| delay(200, 1000).then(() => { | |
| // your delayed code here | |
| }) | |
| // I use the above for delaying mocked requests with the `fetch-mock` library. | |
| fetchMock.mock('begin:/my/dummy/url', (url, options) => { | |
| return delay(200, 1000).then(() => { | |
| // my code creating the response object where I look at the options for post parameters | |
| return responseObject | |
| }) | |
| }) |
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