5 lines
1.7 KiB
JavaScript
5 lines
1.7 KiB
JavaScript
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/**
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* Vanilla JavaScript Dropdown v2.2.0
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* https://zoltantothcom.github.io/vanilla-js-dropdown
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*/
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var CustomSelect=function(e){var o="string"==typeof e.elem?document.getElementById(e.elem):e.elem,s="boolean"==typeof e.bubbles,l="js-Dropdown-title",i="is-selected",t="is-open",n=o.getElementsByTagName("optgroup"),a=o.options,d=a.length,r=0,c=document.createElement("div");c.className="js-Dropdown",o.id&&(c.id="custom-"+o.id);var u=document.createElement("button");u.className=l,u.textContent=a[0].textContent;var m=document.createElement("ul");if(m.className="js-Dropdown-list",n.length)for(var p=0;p<n.length;p++){var v=document.createElement("div");v.innerText=n[p].label,v.classList.add("js-Dropdown-optgroup"),m.appendChild(v),g(n[p].getElementsByTagName("option"))}else g(a);function g(e){for(var t=0;t<e.length;t++){var n=document.createElement("li");n.innerText=e[t].textContent,n.setAttribute("data-value",e[t].value),n.setAttribute("data-index",r++),a[o.selectedIndex].textContent===e[t].textContent&&(n.classList.add(i),u.textContent=e[t].textContent),m.appendChild(n)}}function f(){m.classList.toggle(t)}function x(){m.classList.remove(t)}return c.appendChild(u),c.appendChild(m),c.addEventListener("click",function(e){e.preventDefault();var t=e.target;t.className===l&&f();if("LI"===t.tagName){c.querySelector("."+l).innerText=t.innerText,o.options.selectedIndex=t.getAttribute("data-index");var n=s?new CustomEvent("change",{bubbles:!0}):new CustomEvent("change");o.dispatchEvent(n);for(var a=0;a<d;a++)m.querySelectorAll("li")[a].classList.remove(i);t.classList.add(i),x()}}),o.parentNode.insertBefore(c,o),o.style.display="none",document.addEventListener("click",function(e){c.contains(e.target)||x()}),{toggle:f,close:x,open:function(){m.classList.add(t)}}};
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