Question

我想使用从变量动态创建的属性选择器，但它只对变量中的字符串的开头做出反应（非动态部分）：

public partial class InstallNotify : Window
{
    private int totaltime = 30;
    DispatcherTimer dispatcherTimer = new DispatcherTimer();
    private bool bPostponeBtnClicked = false;
    private bool bInstallNowBtnClicked = false;

    public bool ISPOSTPONECLICKED
    {
        get
        {
            return bPostponeBtnClicked;
        }
    }

    public bool ISINSTALLNOWCLICKED
    {
        get
        {
            return bInstallNowBtnClicked;
        }
    }

    /// <summary>
    /// Constructor
    /// </summary>
    public InstallNotify()
    {
        InitializeComponent();
    }

    private void InstallNotifyLoaded(object sender, RoutedEventArgs e)
    {
        dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
        dispatcherTimer.Interval = new TimeSpan(0,0,1);
        dispatcherTimer.Start();
    }

    private void dispatcherTimer_Tick(object sender, EventArgs e)
    {
        TimeLeftInSecs.Content = totaltime.ToString();
        totaltime--;
        if (totaltime < 0)
        {
            dispatcherTimer.Stop();
            this.Close();
        }
    }

    /// <summary>
    /// This event handler is called when user clicks on the postpone button
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void PostponeBtnClicked(object sender, RoutedEventArgs e)
    {
        bPostponeBtnClicked = true;
        this.Close();
    }


    /// <summary>
    /// This event handler is called when user clicks on the Install Now button
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void InstallNowClicked(object sender, RoutedEventArgs e)
    {
        bInstallNowBtnClicked = true;
        this.Close();
    }

}

当我按如下方式使用它时：

var dataKeys = 'td[data-key="name"],td[data-key="code"],td[data-key="date"]';
dataKeys = dataKeys + ',td[data-key="' + fieldsArray[i] + '"]';

当dataKeys：

时，它只对

$(dataKeys, this).each(function ()

，"name"和"code"键的属性值做出反应

"date"

Answer 1

我让你的代码部分在1个片段内工作。我一开始只遇到1个问题：我的浏览器剥离了TD元素，因为它们不在正确的html表格中，因此选择器找不到td s

所以我把它放在一张桌子里就可以了。（见下面的摘录）。

最有可能的错误是代码中的其他位置。也许最好添加一些日志记录或调试，看看你的变量有哪些值。我只给你一个可能的解决方案。

＆＃13;

var fieldsArray = ['dynamic', 'serial_no'];
var dataKeys = 'td[data-key="name"],td[data-key="code"],td[data-key="date"]';
dataKeys = dataKeys + ',td[data-key="' + fieldsArray[1] + '"]';

console.log('selector', dataKeys);
$(dataKeys).each(function() {
  console.log('i am', this);
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<table>
  <tr>
    <td data-key="name">hey</td>
    <td data-key="code">hi</td>
    <td data-key="excluded">hoho</td>
    <td data-key="serial_no">hoho</td>
    <tr>
      <table>

＆＃13;

jQuery选择器使用多个data- *属性选择器

1 个答案: