[Javascript] Encapsulate chunk operation

function main() {
    const datas = new Array(10000).fill(null).map((_, i) => i)

    function taskHanlder(_, i) {
        console.log(i)
    }

    performChunkNode(datas, taskHanlder)
}

main()

function performChunk(datas, task, scheduler) {
    if (typeof datas === 'number') {
        datas = {
            length: datas
        }
    }

    if (datas.length === 0) {
        return;
    }
    let i =0;

    function _run() {
        if (i >= datas.length) {
            return;
        }
        scheduler((goOn) => {
            while(goOn() > 0 && i < datas.length) {
                task(datas[i], i)
                i++
            }
            _run()
        })
    }
    _run()
}

function performChunkBrowser(datas, taskHanlder) {
    const scheduler = (task) => {
        requestIdleCallback((idle) => {
            task(() => idle.timeRemaining() > 0)
        })
    }

    performChunk(datas, taskHanlder, scheduler)
}

function performChunkNode(datas, taskHanlder) {
    const scheduler = (task) => {
        setTimeout(() => {
            const now = performance.now()
            task(() => performance.now() - now <= 10)
        }, 1000)
    }

    performChunk(datas, taskHanlder, scheduler)
}

 

posted @   Zhentiw  阅读(7)  评论(0编辑  收藏  举报
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