Question

我在Visual Studio 2015中创建了新项目。它是JavaScript的Windows应用程序。我试图制作＆＃34;你好＆＃34;应用程序，但当我想编译它我得到这个错误：

0x800a138f - JavaScript运行时错误：无法设置属性＆＃39; onclick＆＃39;未定义或空引用

我的代码：

＆＃13;

document.getElementById("button").onclick = function () {
    var jmeno = document.getElementById("Jmeno").value
    var pop = new Windows.UI.Popups.MessageDialog("<%=Ahoj.Clientid%>" + jmeno);
    pop.showAsync()
}

＆＃13;

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>App1</title>

    <!-- WinJS references -->
    <link href="WinJS/css/ui-dark.css" rel="stylesheet" />
    <script src="WinJS/js/base.js"></script>
    <script src="WinJS/js/ui.js></script>

    <!-- App1 references -->
    <link href="/css/default.css" rel="stylesheet" />
    <script src="/js/default.js"></script>
    <script src="js/zdravic.js"></script>
</head>
<body class="win-type-body">
    <header>
        <h1>Hello user! :)</h1>
    </header>
    <section>
        <input id='Jmeno' type="text" placeholder="Zadej své jméno"/>
        <button id="button">Klikni na mě!</button>
    </section>
</body>
</html>

＆＃13;

而对于更多，default.css并不适合我。就像它不会在那里。是的，我已将它链接到那里。

Answer 1

您正在尝试访问尚未加载的元素

尝试：

    If (money > 0) {
    tens = (int) money / 10;
    money = money % 10;
    System.out.printlm(tens + "pcs of 10 peso coin");
     }

    If (money > 0) {
    fives = (int) money / 5;
    money = money % 5;
    System.out.printlm(fives + "pcs of 5 peso coin");
    }

    If (money > 0) {
    ones = (int) money % 1;
    money = money % 1;
    System.out.printlm(ones + "pcs of 1 peso coin");
    }

无法设置属性＆＃39; onclick＆＃39;未定义或空引用的

1 个答案: