Question

我有一个文本区域

<textarea id="tarea" class="textarea" cols="15" rows="10" disabled></textarea>

我想将组合框中的值发送到textarea

<div class="form-group col-xl-7">

    <label>Livro</label>
    <div id="combo">

        <select id="comboLivros">
            <option class="option"></option>
        </select>

    </div>

    <br>

    <label>Proprietário a que se refere</label>
    <input type="text" id='prop_desc' disabled/>

    <br>

    <label>Pontuação</label>
    <select  id="seleciona">

    </select>
</div>

这些是我的组合框，里面装有一个数组

当我选择带有单击按钮时选择的值的组合框时，我想要填充文本区域这就是我填充我的组合框之一的方式

var select = document.getElementById("seleciona");
var options = ["1", "2", "3", "4", "5"];
for (var i = 0; i < options.length; i++) {
    var opt = options[i];
    var el = document.createElement("option");
    el.textContent = opt;
    el.value = opt;
    select.appendChild(el);
}

这就是我填充组合框之一的方式

Answer 1

您可以使用select的事件更改来设置textarea的值：

var select = document.getElementById("seleciona");
var options = ["1", "2", "3", "4", "5"];
for (var i = 0; i < options.length; i++) {
    var opt = options[i];
    var el = document.createElement("option");
    el.textContent = opt;
    el.value = opt;
    select.appendChild(el);
}
var textarea = document.getElementById("tarea");
select.onchange = function(){
    textarea.value = select.options[select.selectedIndex].value;
    
}

<textarea id="tarea" class="textarea" cols="15" rows="10" disabled></textarea>
<div class="form-group col-xl-7">

    <label>Livro</label>
    <div id="combo">

        <select id="comboLivros">
            <option class="option"></option>
        </select>

    </div>

    <br>

    <label>Proprietário a que se refere</label>
    <input type="text" id='prop_desc' disabled/>

    <br>

    <label>Pontuação</label>
    <select  id="seleciona">

    </select>
</div>

希望对您有帮助。

从组合框发送值到textarea

1 个答案: