57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
$(function () {
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var index = 0
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const maxIndex = numImages - 1
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const delay = 6000
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const shuffeledIndices = []
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for(let i=0; i<=maxIndex; i++){
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shuffeledIndices.push(i)
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}
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// Shuffle by Fisher-Yates algorithm
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for(let i=maxIndex; i>= 0; i--) {
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const j = Math.floor(Math.random() * (i+1))
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const tmp = shuffeledIndices[j]
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shuffeledIndices[j] = shuffeledIndices[i]
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shuffeledIndices[i] = tmp
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}
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function showImage(idxidx) {
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const idx = shuffeledIndices[idxidx]
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const imgs = $('#header .slider .slider-img')
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imgs.eq(idx).removeClass('hidden')
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imgs.filter((i, e) => {return i != idx}).addClass('hidden')
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const dots = $('#header .slider .dots .dot')
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dots.removeClass('active')
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dots.eq(idxidx).addClass('active')
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index = idxidx
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}
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function getNextIndex() {
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const ret = index + 1
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if (ret > maxIndex) {
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return 0
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} else {
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return ret
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}
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}
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function nextImage() {
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const newIdx = getNextIndex()
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showImage(newIdx)
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setTimeout(nextImage, delay)
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}
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showImage(0)
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// Start the animaions delayed to allow for showing the first image directly
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setTimeout(() => {
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$('#header .slider .slider-img').addClass('animated')
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}, 150)
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setTimeout(nextImage, delay)
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$('#header .slider .dots .dot').click(function (evt) {
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// console.log(evt)
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const newIdx = $(evt.target).data('index')
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showImage(newIdx)
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})
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})
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