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  1. var x, i, j, selElmnt, a, b, c;
  2. /*look for any elements with the class "custom-select":*/
  3. x = document.getElementsByClassName("custom-select");
  4. for (i = 0; i < x.length; i++) {
  5.   selElmnt = x[i].getElementsByTagName("select")[0];
  6.   /*for each element, create a new DIV that will act as the selected item:*/
  7.   a = document.createElement("DIV");
  8.   a.setAttribute("class", "select-selected");
  9.   a.innerHTML = selElmnt.options[selElmnt.selectedIndex].innerHTML;
  10.   x[i].appendChild(a);
  11.   /*for each element, create a new DIV that will contain the option list:*/
  12.   b = document.createElement("DIV");
  13.   b.setAttribute("class", "select-items select-hide");
  14.   for (j = 1; j < selElmnt.length; j++) {
  15.     /*for each option in the original select element,
  16.     create a new DIV that will act as an option item:*/
  17.     c = document.createElement("DIV");
  18.     c.innerHTML = selElmnt.options[j].innerHTML;
  19.     c.addEventListener("click", function(e) {
  20.         /*when an item is clicked, update the original select box,
  21.         and the selected item:*/
  22.         var y, i, k, s, h;
  23.         s = this.parentNode.parentNode.getElementsByTagName("select")[0];
  24.         h = this.parentNode.previousSibling;
  25.         for (i = 0; i < s.length; i++) {
  26.           if (s.options[i].innerHTML == this.innerHTML) {
  27.             s.selectedIndex = i;
  28.             h.innerHTML = this.innerHTML;
  29.             y = this.parentNode.getElementsByClassName("same-as-selected");
  30.             for (k = 0; k < y.length; k++) {
  31.               y[k].removeAttribute("class");
  32.             }
  33.             this.setAttribute("class", "same-as-selected");
  34.             break;
  35.           }
  36.         }
  37.         h.click();
  38.     });
  39.     b.appendChild(c);
  40.   }
  41.   x[i].appendChild(b);
  42.   a.addEventListener("click", function(e) {
  43.       /*when the select box is clicked, close any other select boxes,
  44.       and open/close the current select box:*/
  45.       e.stopPropagation();
  46.       closeAllSelect(this);
  47.       this.nextSibling.classList.toggle("select-hide");
  48.       this.classList.toggle("select-arrow-active");
  49.     });
  50. }
  51. function closeAllSelect(elmnt) {
  52.   /*a function that will close all select boxes in the document,
  53.   except the current select box:*/
  54.   var x, y, i, arrNo = [];
  55.   x = document.getElementsByClassName("select-items");
  56.   y = document.getElementsByClassName("select-selected");
  57.   for (i = 0; i < y.length; i++) {
  58.     if (elmnt == y[i]) {
  59.       arrNo.push(i)
  60.     } else {
  61.       y[i].classList.remove("select-arrow-active");
  62.     }
  63.   }
  64.   for (i = 0; i < x.length; i++) {
  65.     if (arrNo.indexOf(i)) {
  66.       x[i].classList.add("select-hide");
  67.     }
  68.   }
  69. }
  70. /*if the user clicks anywhere outside the select box,
  71. then close all select boxes:*/
  72. document.addEventListener("click", closeAllSelect);
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