从自动完成文本框中选择值时如何在不单击提交的情况下进行重定向？

Question

码：

<script>
    function autocomplete(inp, arr) {
      inp.addEventListener("input", function(e) {
          var a, b, i, val = this.value;
          closeAllLists();
          if (!val) { return false;}
          currentFocus = -1;
          a = document.createElement("DIV");
          a.setAttribute("id", this.id + "autocomplete-list");
          a.setAttribute("class", "autocomplete-items");
          this.parentNode.appendChild(a);
          for (i = 0; i < arr.length; i++) {
            if (arr[i].substr(0, val.length).toUpperCase() == val.toUpperCase()) {
              b = document.createElement("DIV");
              b.innerHTML = "<strong>" + arr[i].substr(0, val.length) + "</strong>";
              b.innerHTML += arr[i].substr(val.length);
              b.innerHTML += "<input type='hidden' value='" + arr[i] + "'>";
              b.addEventListener("click", function(e) {
                  inp.value = this.getElementsByTagName("input")[0].value;
                  closeAllLists();
              });
              a.appendChild(b);
            }
          }
      });
      inp.addEventListener("keydown", function(e) {
          var x = document.getElementById(this.id + "autocomplete-list");
          if (x) x = x.getElementsByTagName("div");
          if (e.keyCode == 40) {
            addActive(x);
          } else if (e.keyCode == 38) {
            addActive(x);
          } else if (e.keyCode == 13) {
            e.preventDefault();
            if (currentFocus > -1) {
              if (x) x[currentFocus].click();
            }
          }
      });
      function addActive(x) {
        if (!x) return false;
        removeActive(x);
        if (currentFocus >= x.length) currentFocus = 0;
        if (currentFocus < 0) currentFocus = (x.length - 1);
        x[currentFocus].classList.add("autocomplete-active");
      }
      function removeActive(x) {
        for (var i = 0; i < x.length; i++) {
          x[i].classList.remove("autocomplete-active");
        }
      }
      function closeAllLists(elmnt) {
        var x = document.getElementsByClassName("autocomplete-items");
        for (var i = 0; i < x.length; i++) {
          if (elmnt != x[i] && elmnt != inp) {
            x[i].parentNode.removeChild(x[i]);
          }
        }
      }
      document.addEventListener("click", function (e) {
          closeAllLists(e.target);
          });
    }
    var countries = ["Afghanistan","Albania","Algeria","Andorra","Angola","Anguilla","Antigua & Barbuda","Argentina","Armenia","Aruba","Australia","Austria","Azerbaijan","Bahamas","Bahrain","Bangladesh","Barbados","Belarus","Belgium","Belize","Benin","Bermuda"];
    autocomplete(document.getElementById("myInput"), countries);
</script>

<form autocomplete="off">
    <div class="autocomplete" style="width:300px;">
        <input id="myInput" type="text" name="myCountry" placeholder="Country">
    </div>
    <input type="submit">
</form>

在这段代码中，我有一个自动完成文本框，它可以正常工作。 现在，当我单击“提交”按钮并通过操作重定向时，它可以正常工作，但是我想输入任何字母，然后通过箭头键或鼠标选择数据，然后它将重定向到另一页。 所以，我该怎么办？请帮助我。

谢谢

Answer 1

我看到这个问题有两个部分，首先是您希望将事件处理程序附加到文本框，以便从自动完成下拉列表中进行选择。 我将在此页面查看有关以下内容的帮助： 自动完成触发任何事件？

问题的第二部分将是如何以编程方式提交表单，该过程只涉及获取表单，然后调用它的Submit（）方法。 如何使用javascript提交表单？