48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
export function randomExtend (minNum, maxNum) {
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if (arguments.length === 1) {
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return parseInt(Math.random() * minNum + 1, 10)
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} else {
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return parseInt(Math.random() * (maxNum - minNum + 1) + minNum, 10)
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}
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}
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export function debounce (delay, callback) {
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let lastTime
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return function () {
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clearTimeout(lastTime)
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const [that, args] = [this, arguments]
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lastTime = setTimeout(() => {
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callback.apply(that, args)
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}, delay)
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}
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}
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export function observerDomResize (dom, callback) {
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const MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver
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const observer = new MutationObserver(callback)
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observer.observe(dom, { attributes: true, attributeFilter: ['style'], attributeOldValue: true })
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return observer
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}
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export function getPointDistance (pointOne, pointTwo) {
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const minusX = Math.abs(pointOne[0] - pointTwo[0])
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const minusY = Math.abs(pointOne[1] - pointTwo[1])
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return Math.sqrt(minusX * minusX + minusY * minusY)
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}
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export function uuid () {
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
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const r = Math.random() * 16 | 0
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const v = c == 'x' ? r : (r & 0x3 | 0x8)
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return v.toString(16)
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})
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}
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