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carousel: fix error
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@ -14,8 +14,9 @@ import Carousel from 'bootstrap/js/src/carousel';
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// ACHeaderSlider is a small slider used in banner of AccompanyingCourse Section
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// Initialize options, and show/hide controls in first/last slides
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//
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let ACHeaderSlider = document.querySelector('#ACHeaderSlider'),
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controlPrev = ACHeaderSlider.querySelector('button[data-bs-slide="prev"]'),
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let ACHeaderSlider = document.querySelector('#ACHeaderSlider');
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if (ACHeaderSlider) {
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let controlPrev = ACHeaderSlider.querySelector('button[data-bs-slide="prev"]'),
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controlNext = ACHeaderSlider.querySelector('button[data-bs-slide="next"]'),
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length = ACHeaderSlider.querySelectorAll('.carousel-item').length,
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last = length-1,
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@ -43,3 +44,4 @@ ACHeaderSlider.addEventListener('slid.bs.carousel', (e) => {
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controlNext.classList.remove('visually-hidden');
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}
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})
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}
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