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What is requestIdleCallback and use scenarios, for this problem, this article details the corresponding analysis and solutions, hoping to help more friends who want to solve this problem find a simpler and easier way.

requestIdleCallback maintains a queue to be executed during browser idle time. It belongs to the Background Tasks API, and you can use setTimeout to simulate the implementation.

window.requestIdleCallback = window.requestIdleCallback || function(handler) {

let startTime = Date.now();

return setTimeout(function() {

handler({

didTimeout: false,

timeRemaining: function() {

return Math.max(0, 50.0 - (Date.now() - startTime));

}

});

}, 1);

}

There are a few things to note when you can perform tasks in ric:

Do not manipulate DOM in idle callbacks because it uses the idle time after a remake of. Remanipulating DOM will cause a remake.

React's time slicing is based on requestIdleCallback, but because of ric compatibility and 50ms fluency issues, React has a self-made implementation: scheduler.

About what is requestIdleCallback and the answer to the use of the scenario questions shared here, I hope the above content can be of some help to everyone, if you still have a lot of doubts not solved, you can pay attention to the industry information channel to learn more related knowledge.

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