39 lines
731 B
JavaScript
39 lines
731 B
JavaScript
export function buffer (fn, ms) {
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let timer
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function clear () {
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if (timer) {
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clearTimeout(timer)
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timer = null
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}
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}
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function bufferFn () {
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clear()
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timer = setTimeout(fn, ms)
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}
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bufferFn.clear = clear
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return bufferFn
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}
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export function isSamePoint (prev, next) {
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if (prev === next) return true
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if (!prev || !next) return false
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if ('pageX' in next && 'pageY' in next) {
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return prev.pageX === next.pageX && prev.pageY === next.pageY
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}
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if ('clientX' in next && 'clientY' in next) {
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return prev.clientX === next.clientX && prev.clientY === next.clientY
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}
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return false
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}
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export function isWindow (obj) {
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return obj && typeof obj === 'object' && obj.window === obj
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}
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