49 lines
1.3 KiB
JavaScript
49 lines
1.3 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 getUuid() {
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let d = new Date().getTime();
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const uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
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var r = (d + Math.random()*16)%16 | 0;
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d = Math.floor(d/16);
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return (c=='x' ? r : (r&0x7|0x8)).toString(16);
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});
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return uuid;
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} |