40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
|
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)
|
||
|
|
}
|