htmlcssdrop-down-menuonmouseout

Can I make a standard drop down menu automatically close on mouseout?


I need a standard drop down menu to close on mouseout.

I tried a few things, but so far, nothing is working.

<select>  

  <option value="0" selected="selected" disabled="disabled">Options</option>    
  <option value="A">A</option>
  <option value="B">B</option>
  <option value="C">C</option>
  <option value="D">D</option>

</select>

Solution

  • It seems that you can’t do this with a standard <select>, at least not in the browsers I tried.

    However, you can do it with a custom select. This snippet contains a modified version of the code from w3schools.

    var x, i, j, l, ll, selElmnt, a, b, c;
    /* Look for any elements with the class "custom-select": */
    x = document.getElementsByClassName("custom-select");
    l = x.length;
    for (i = 0; i < l; i++) {
      selElmnt = x[i].getElementsByTagName("select")[0];
      ll = selElmnt.length;
      /* For each element, create a new DIV that will act as the selected item: */
      a = document.createElement("DIV");
      a.setAttribute("class", "select-selected");
      a.innerHTML = selElmnt.options[selElmnt.selectedIndex].innerHTML;
      x[i].appendChild(a);
      /* For each element, create a new DIV that will contain the option list: */
      b = document.createElement("DIV");
      b.setAttribute("class", "select-items select-hide");
      for (j = 1; j < ll; j++) {
        /* For each option in the original select element,
        create a new DIV that will act as an option item: */
        c = document.createElement("DIV");
        c.innerHTML = selElmnt.options[j].innerHTML;
        c.addEventListener("click", function(e) {
            /* When an item is clicked, update the original select box,
            and the selected item: */
            var y, i, k, s, h, sl, yl;
            s = this.parentNode.parentNode.getElementsByTagName("select")[0];
            sl = s.length;
            h = this.parentNode.previousSibling;
            for (i = 0; i < sl; i++) {
              if (s.options[i].innerHTML == this.innerHTML) {
                s.selectedIndex = i;
                h.innerHTML = this.innerHTML;
                y = this.parentNode.getElementsByClassName("same-as-selected");
                yl = y.length;
                for (k = 0; k < yl; k++) {
                  y[k].removeAttribute("class");
                }
                this.setAttribute("class", "same-as-selected");
                break;
              }
            }
            h.click();
        });
        b.appendChild(c);
      }
      x[i].appendChild(b);
      a.addEventListener("click", function(e) {
        /* When the select box is clicked, close any other select boxes,
        and open/close the current select box: */
        e.stopPropagation();
        closeAllSelect(this);
        this.nextSibling.classList.toggle("select-hide");
        this.classList.toggle("select-arrow-active");
      });
    }
    
    function closeAllSelect(elmnt) {
      /* A function that will close all select boxes in the document,
      except the current select box: */
      var x, y, i, xl, yl, arrNo = [];
      x = document.getElementsByClassName("select-items");
      y = document.getElementsByClassName("select-selected");
      xl = x.length;
      yl = y.length;
      for (i = 0; i < yl; i++) {
        if (elmnt == y[i]) {
          arrNo.push(i)
        } else {
          y[i].classList.remove("select-arrow-active");
        }
      }
      for (i = 0; i < xl; i++) {
        if (arrNo.indexOf(i)) {
          x[i].classList.add("select-hide");
        }
      }
    }
    
    /* If the user clicks anywhere outside the select box,
    then close all select boxes: */
    document.addEventListener("click", closeAllSelect);
    
    document.querySelector('.select-items').addEventListener('mouseleave', closeAllSelect)
    /* The container must be positioned relative: */
    .custom-select {
      position: relative;
      font-family: Arial;
    }
    
    .custom-select select {
      display: none; /*hide original SELECT element: */
    }
    
    .select-selected {
      background-color: DodgerBlue;
    }
    
    /* Style the arrow inside the select element: */
    .select-selected:after {
      position: absolute;
      content: "";
      top: 14px;
      right: 10px;
      width: 0;
      height: 0;
      border: 6px solid transparent;
      border-color: #fff transparent transparent transparent;
    }
    
    /* Point the arrow upwards when the select box is open (active): */
    .select-selected.select-arrow-active:after {
      border-color: transparent transparent #fff transparent;
      top: 7px;
    }
    
    /* style the items (options), including the selected item: */
    .select-items div,.select-selected {
      color: #ffffff;
      padding: 8px 16px;
      border: 1px solid transparent;
      border-color: transparent transparent rgba(0, 0, 0, 0.1) transparent;
      cursor: pointer;
    }
    
    /* Style items (options): */
    .select-items {
      position: absolute;
      background-color: DodgerBlue;
      top: 100%;
      left: 0;
      right: 0;
      z-index: 99;
    }
    
    /* Hide the items when the select box is closed: */
    .select-hide {
      display: none;
    }
    
    .select-items div:hover, .same-as-selected {
      background-color: rgba(0, 0, 0, 0.1);
    }
    <div class="custom-select" style="width:200px;">
      <select>
        <option value="0" selected="selected" disabled="disabled">Options</option>    
        <option value="A">A</option>
        <option value="B">B</option>
        <option value="C">C</option>
        <option value="D">D</option>
      </select>
    </div>