自定義選擇菜單中的鏈接功能中斷

Question

我正在處理我正在處理的 Wordpress 網站的問題。 請參閱此處的頁面： http : //v2new.brandgineeringbydesign.com/blog/

在右側邊欄中，有一個下拉菜單，我嘗試使用 CSS 對其進行自定義，而不是默認瀏覽器使用的任何內容。 我使用的代碼隱藏了舊的下拉菜單，並使用下面的 javascript 創建了一個新菜單：

<script>
var x, i, j, l, ll, selElmnt, a, b, c;
/*look for any elements with the class "custom-select":*/
x = document.getElementsByClassName("widget_categories");
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);
</script>

代碼加上下面的 CSS 效果很好，但下拉鏈接功能不再有效。 也許javascript需要一兩行額外的代碼？ 你的幫助會很棒！

.widget_categories {
  position: relative;
  /*font-family: Arial;*/
}

.widget_categories select {
  display: none!important; /*hide original SELECT element:*/
}

.widget_categories .select-selected {
  background-color: #ed1c24!important;
}

/*style the arrow inside the select element:*/
.widget_categories .select-selected:after {
  position: absolute!important;
  content: ""!important;
  top: 127px!important;
  right: 15px!important;
  width: 0!important;
  height: 0!important;
  border: 6px solid transparent!important;
  border-color: #fff transparent transparent transparent!important;
}

/*point the arrow upwards when the select box is open (active):*/
.widget_categories .select-selected .select-arrow-active:after {
  border-color: transparent transparent #fff transparent!important;
  top: 7px!important;
}

/*style the items (options), including the selected item:*/
.widget_categories .select-items div,.select-selected {
  color: #ffffff!important;
  padding: 8px 16px!important;
  border: 1px solid transparent!important;
  border-color: transparent transparent rgba(0, 0, 0, 0.1) transparent!important;
  cursor: pointer!important;
  user-select: none!important;
}

/*style ONLY open dropdown items*/
.widget_categories .select-items div {
    padding:0 0 0 15px!important;
    font-size:13px;
}

/*style items (options):*/
.widget_categories .select-items {
  position: absolute!important;
  background-color: #ed1c24!important;
  top: 100%!important;
  left: 0!important;
  right: 0!important;
  z-index: 99!important;
}

/*hide the items when the select box is closed:*/
.widget_categories .select-hide {
  display: none!important;
}

.widget_categories .select-items div:hover, .same-as-selected {
  background-color: rgba(0, 0, 0, 0.1)!important;
}

@media only screen and (min-width: 1150px) {
  .widget_categories .select-selected:after {
  top: 97px!important;
  right: 15px!important;
}
}

@media only screen and (max-width: 800px) {
  .widget_categories {
      display:none;
  }
}

Answer 1

選擇框執行以下功能：

    <script type="text/javascript">
/* <![CDATA[ */
(function() {
    var dropdown = document.getElementById( "cat" );
    function onCatChange() {
        if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
            dropdown.parentNode.submit();
        }
    }
    dropdown.onchange = onCatChange;
})();
/* ]]&gt; */
</script>

選擇框周圍的形式是：

<form action="http://v2new.brandgineeringbydesign.com" method="get">
</form>

你必須執行這個表格。

或者你必須做這樣的事情：

var cat = 190; 
location.href = 'http://v2new.brandgineeringbydesign.com?cat=' + cat;