29 lines
797 B
JavaScript
29 lines
797 B
JavaScript
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(function() {
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document.addEventListener('DOMContentLoaded', function(event) {
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document
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.querySelector('[data-toggle="dropdown"]')
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.addEventListener('click', toggleDropdown)
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document
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.querySelector('.dropdown-menu')
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.addEventListener('click', function(event) { event.stopPropagation() })
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})
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function toggleDropdown(event){
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event.stopPropagation()
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event.preventDefault()
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var elem = document.querySelector('.dropdown-menu')
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var open = elem.classList.toggle('is-open')
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if(elem.setAttribute) // not supported by IE11
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elem.setAttribute('aria-expanded', open ? 'true' : 'false')
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if(open) {
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window.addEventListener('click', toggleDropdown)
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} else {
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window.removeEventListener('click', toggleDropdown)
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}
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}
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}())
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