An extension of native javascript timers which returns 'Actual Waiting Time' in callback.
SpiritualTimer.setTimeout(function(actualTime){
console.log(actualTime); // "500"
// Your code
}, 500);Say you are using native setInterval and setTimeout in your application and you have timers running less than 1000ms. However, if you switch TABs or minimize the browser window, these timers slow down a lot. This is a performance feature of modern browsers. They make the assumption that if the particular web app isn't visible for the user, they can slow down its timers to save performance. This is pretty reasonable in general, but sometimes you just need to keep things running.
This timer will not make it always run in background. But it will return you the Actual time it waited before executing your code. With this you will know that ok the timer did not run for this amount of time, you can basically add code to cover up for the lost time. Now see the example below.
SpiritualTimer.setTimeout(function(actualTime){
// The user minimizes the borwser tab
// or switches to another tab for say 2000 ms and then comes back
console.log(actualTime); // "2000"
// You know know that it being called after 2000ms not 500ms, you can handle it with your code
}, 500); npm install spiritual-timer --save var SpiritualTimer = require('SpiritualTimer');
SpiritualTimer.setTimeout(function(actualTime){
// write your code here
}, 500);I love pull requests. If you think you can improve the code or you have a idea of adding more features, Just do it and send me pull request
The end goal is to make timers which even works regardless if the tab is active or not. And it is possible as well. But to make it work, currently the best solution is to use Web worker which is not supported by many browsers
- Do it same for setInterval
- Write timers which use web worker to make it work
MIT license; see LICENSE.
(c) 2015 by Inderpal Singh