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index.js
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index.js
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export function randomExtend (minNum, maxNum) {
if (arguments.length === 1) {
return parseInt(Math.random() * minNum + 1, 10)
} else {
return parseInt(Math.random() * (maxNum - minNum + 1) + minNum, 10)
}
}
export function debounce (delay, callback) {
let lastTime
return function () {
clearTimeout(lastTime)
const [that, args] = [this, arguments]
lastTime = setTimeout(() => {
callback.apply(that, args)
}, delay)
}
}
export function observerDomResize (dom, callback) {
const MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver
const observer = new MutationObserver(callback)
observer.observe(dom, { attributes: true, attributeFilter: ['style'], attributeOldValue: true })
return observer
}
export function getPointDistance (pointOne, pointTwo) {
const minusX = Math.abs(pointOne[0] - pointTwo[0])
const minusY = Math.abs(pointOne[1] - pointTwo[1])
return Math.sqrt(minusX * minusX + minusY * minusY)
}