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(function () { |
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'use strict'; |
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|
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function animateSkills() { |
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var wraps = document.querySelectorAll('.bkbg-skills[data-animate="1"]'); |
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if (!wraps.length) return; |
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|
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/* -- bars -- */ |
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var bars = document.querySelectorAll('.bkbg-skills[data-animate="1"] .bkbg-skills-fill'); |
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bars.forEach(function (el) { el.style.width = '0%'; }); |
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|
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/* -- circles -- */ |
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var arcs = document.querySelectorAll('.bkbg-skills[data-animate="1"] .bkbg-skills-arc'); |
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arcs.forEach(function (el) { |
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var circ = parseFloat(el.getAttribute('data-circ')) || 0; |
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el.style.strokeDashoffset = circ; |
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}); |
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|
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var io = new IntersectionObserver(function (entries) { |
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entries.forEach(function (entry) { |
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if (!entry.isIntersecting) return; |
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var wrap = entry.target; |
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|
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/* animate bars within this wrap */ |
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var wrapBars = wrap.querySelectorAll('.bkbg-skills-fill'); |
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wrapBars.forEach(function (fill) { |
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var pct = parseFloat(fill.getAttribute('data-pct')) || 0; |
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fill.style.transition = 'width 0.9s ease'; |
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fill.style.width = pct + '%'; |
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}); |
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|
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/* animate circle arcs within this wrap */ |
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var wrapArcs = wrap.querySelectorAll('.bkbg-skills-arc'); |
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wrapArcs.forEach(function (arc) { |
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var pct = parseFloat(arc.getAttribute('data-pct')) || 0; |
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var circ = parseFloat(arc.getAttribute('data-circ')) || 0; |
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var target = circ - (pct / 100) * circ; |
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arc.style.transition = 'stroke-dashoffset 1.2s ease'; |
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arc.style.strokeDashoffset = target; |
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}); |
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|
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io.unobserve(wrap); |
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}); |
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}, { threshold: 0.2 }); |
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|
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wraps.forEach(function (wrap) { io.observe(wrap); }); |
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} |
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|
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if (document.readyState === 'loading') { |
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document.addEventListener('DOMContentLoaded', animateSkills); |
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} else { |
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animateSkills(); |
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} |
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}()); |
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|
