Question

也许我在这里错过了一些简单的东西.. “添加”按钮不会触发要添加到li的项目。 “启动任务”按钮目前并不重要。

谢谢！

function add() {
var a = document.getElementById("input_txt").value;
var b = document.getElementById("items");

var tag = document.createElement("li");
tag.innerHTML = a;

b.append(tag);

document.getElementById("input_txt").value = "";

}

    <!DOCTYPE HTML>

    <title>TaR</title>
    <link href="style.css" rel="styelsheet" />

<body>
        <div>
            <section>
                <input type="text" placeholder="Enter Item" id="input_txt" />
                    <button onclick="add(0" id="add_txt">Add</button>
            </section>


            <ul id="items">


            </ul>
            <section>
                    <button onclick="Launch(0" id="launch_task">Launch Task</button>
            </section>
        </div>

    <script src="script.js"></script>
</body>

Answer 1

你错过了一个括号：

发件人

<button onclick="add(0" id="add_txt">Add</button> <button onclick="Launch(0" id="launch_task">Launch Task</button>

要

add(0 Launch(0

Answer 2

您输错了，请fun showDocument() { var documentLayout: TableLayout = findViewById(R.id.document_layout) val row = TableRow(documentLayout.context) val inputField = EditText(row.context) inputField.setScroller(Scroller(documentLayout.context)) inputField.maxLines = 1 inputField.isVerticalScrollBarEnabled = true inputField.isHorizontalScrollBarEnabled = true inputField.movementMethod = ScrollingMovementMethod() inputField.overScrollMode = EditText.OVER_SCROLL_IF_CONTENT_SCROLLS val label = TextView(row.context) label.text = "Label" label.labelFor = inputField.id row.addView(label) row.addView(inputField) documentLayout.addView(row) }失踪），应该是<button onclick="add(0" id="add_txt">Add</button>

但最好以编程方式设置事件监听器。

在您的脚本中添加：

<button onclick="add(0)" id="add_txt">Add</button>

按钮不在列表项中添加条目

2 个答案: