49 lines
1.1 KiB
JavaScript
49 lines
1.1 KiB
JavaScript
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const progress = document.getElementById('progress')
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const prev = document.getElementById('prev')
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const next = document.getElementById('next')
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const circles = document.querySelectorAll('.circle')
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let currentActive = 1
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next.addEventListener('click', () => {
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currentActive++
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if(currentActive > circles.length) {
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currentActive = circles.length
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}
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update()
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})
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prev.addEventListener('click', () => {
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currentActive--
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if(currentActive < 1) {
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currentActive = 1
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}
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update()
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})
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function update() {
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circles.forEach((circle, idx) => {
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if(idx < currentActive) {
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circle.classList.add('active')
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} else {
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circle.classList.remove('active')
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}
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})
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const actives = document.querySelectorAll('.active')
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progress.style.width = (actives.length - 1) / (circles.length - 1) * 100 + '%'
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if(currentActive === 1) {
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prev.disabled = true
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} else if(currentActive === circles.length) {
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next.disabled = true
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} else {
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prev.disabled = false
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next.disabled = false
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}
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}
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