idle & js

idle meaning in js

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/idle



// var handle = window.requestIdleCallback(callback[, options])

const handle = window.requestIdleCallback(

    (IdleDeadline) => console.log(`handle =`, window.handle, IdleDeadline),

    {

         timeout: 1000,// mm

    }

);

// handle = 13 IdleDeadline {didTimeout: false}

// didTimeout: false__proto__: IdleDeadlinedidTimeout: (...)timeRemaining: ƒ timeRemaining()constructor: ƒ IdleDeadline()Symbol(Symbol.toStringTag): "IdleDeadline"get didTimeout: ƒ didTimeout()__proto__: Objectconstructor: ƒ Object()hasOwnProperty: ƒ hasOwnProperty()isPrototypeOf: ƒ isPrototypeOf()propertyIsEnumerable: ƒ propertyIsEnumerable()toLocaleString: ƒ toLocaleString()toString: ƒ toString()valueOf: ƒ valueOf()__defineGetter__: ƒ __defineGetter__()__defineSetter__: ƒ __defineSetter__()__lookupGetter__: ƒ __lookupGetter__()__lookupSetter__: ƒ __lookupSetter__()get __proto__: ƒ __proto__()set __proto__: ƒ __proto__()

window.cancelIdleCallback(handle);

https://developers.google.com/web/updates/2015/08/using-requestidlecallback

https://stackoverflow.com/questions/20702940/what-does-idle-mean-in-google-chrome-devtools-profiler

https://dev.to/canastro/javascript-long-running-tasks-use-cpu-s-idle-periods-58g2

Window.requestIdleCallback

https://developer.mozilla.org/en-US/docs/Web/API/Window/requestIdleCallback



// var handle = window.requestIdleCallback(callback[, options])

var handle = window.requestIdleCallback(

	() => console.log(`handle =`, window.handle),

	{

		timeout: 1000,// mm

    }

);

// handle = 1

window.cancelIdleCallback(handle);

https://developer.mozilla.org/zh-CN/docs/Web/API/Window/cancelIdleCallback

https://caniuse.com/#search=requestIdle