如何使用JavaScript将所选选项的值与选项文本相同

Question

我有这种动态HTML / JavaScript格式，效果很好，但是我发现单击“提交”时，它将选项的值作为其索引而不是选项中的文本。

我曾尝试更改JavaScript代码，但似乎无法弄清楚该如何解决。

HTML

    <!-- Category -->
    <label for="type">Category<span class="required-input"> *</span></label>
    <select id="type" name="type" onchange="ChangeTypeList()">
        <option value="">--Select--</option>
        <option value="Order Inquiry">Order Inquiry</option>
        <option value="Product Inquiry">Product Inquiry</option>
    </select>

    <!-- Sub Category -->
    <label for="reason">Sub Category</label>
    <select id="reason" name="reason"></select>

JavaScript的

    var reasons = {};
    reasons['Order Inquiry'] = ['Order Status','Order Issue', 'X'];
    reasons['Product Inquiry'] = ['Product Weight', 'Product Quality'];

    function ChangeTypeList() {
        var typeList = document.getElementById("type");
        var reasonsList = document.getElementById("reason");
        var reasonsType = typeList.options[typeList.selectedIndex].value;

        while (reasonsList.options.length) {
            reasonsList.remove(0);
        }
        var decisions = reasons[reasonsType];
        if (decisions) {
            var i;
            for (i = 0; i < decisions.length; i++) {
                var decision = new Option(decisions[i], i);
                reasonsList.options.add(decision);
                // console.log('decision', decision);
            }
        }
    }

当我选择第一个类别选项“订单查询”和console.log时：

console.log('decision', decision);

我在控制台中的“子类别”中看到以下内容：

<option value="0">Order Status</option>
<option value="1">Order Issue</option>
<option value="2">X</option>

理想情况下，我希望看到这是“子类别”的控制台：

<option value="Order Status">Order Status</option>
<option value="Order Issue">Order Issue</option>
<option value="X">X</option> 

Answer 1

option HTML元素具有value和text属性。

 var options = document.getElementById("dropdown").children; for (var i = 0; i < options.length; i++) { options[i].value = options[i].text; } 

 <select id="dropdown"> <option value="0">A</option> <option value="1">B</option> <option value="2">C</option> </select> 

Answer 2

您需要将decisions[i]作为第二个参数传递给Option 。
语法 ： new Option(text, value, defaultSelected, selected); 更多详情选项

 var reasons = {}; reasons['Order Inquiry'] = ['Order Status','Order Issue', 'X']; reasons['Product Inquiry'] = ['Product Weight', 'Product Quality']; function ChangeTypeList() { var typeList = document.getElementById("type"); var reasonsList = document.getElementById("reason"); var reasonsType = typeList.options[typeList.selectedIndex].value; while (reasonsList.options.length) { reasonsList.remove(0); } var reason = document.getElementById('reason'); var decisions = reasons[reasonsType]; if (decisions) { var i; for (i = 0; i < decisions.length; i++) { //This line is changed var decision = new Option(decisions[i], decisions[i]); reasonsList.options.add(decision); console.log('decision', decision); } } } 

 <label for="type">Category<span class="required-input"> *</span></label> <select id="type" name="type" onchange="ChangeTypeList()"> <option value="">--Select--</option> <option value="Order Inquiry">Order Inquiry</option> <option value="Product Inquiry">Product Inquiry</option> </select> <!-- Sub Category --> <label for="reason">Sub Category</label> <select id="reason" name="reason"></select>