我试图获取qUnit创建的DOM对象的引用,但没有运气。它与#34;自制的#34; DOM元素。我做了test site来说明问题。访问网站时打开Firebug或其他日志记录窗口。
这是网站的代码:
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JScrollPane;
import net.miginfocom.swing.MigLayout;
import javax.swing.JComboBox;
public class Window extends JDialog {
/**
* Launch the application.
*/
public static void main(String[] args) {
try {
Window dialog = new Window();
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
dialog.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Create the dialog.
*/
public Window() {
setBounds(100, 100, 450, 153);
getContentPane().setLayout(new BorderLayout());
{
JScrollPane scrollPane = new JScrollPane();
getContentPane().add(scrollPane, BorderLayout.CENTER);
{
JPanel panel = new JPanel();
scrollPane.setViewportView(panel);
panel.setLayout(new MigLayout("", "[grow]", "[][][][][][][]"));
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 0,growx");
}
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 1,growx");
}
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 2,growx");
}
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 3,growx");
}
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 4,growx");
}
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 5,growx");
}
{
JComboBox comboBox = new JComboBox();
panel.add(comboBox, "cell 0 6,growx");
}
}
}
}
}

window.onload = function() {
var qunitTestrunnerToolbar_element = document.getElementById("qunit-testrunner-toolbar");
console.log("qunitTestrunnerToolbar_element: ", qunitTestrunnerToolbar_element);
var test_element = document.getElementById("test_element");
console.log("test_element: ", test_element);
};

答案 0 :(得分:1)
它不会像这样
我不是在谈论qunit
,但是document.getElementById("qunit-testrunner-toolbar");
将返回null,因为此html中没有元素。
如果您特别询问如何获得实际ID而不是null
您可以 在此html中添加原始脚本文件 ,然后var qunitTestrunnerToolbar_element = document.getElementById("qunit-testrunner-toolbar");
将console
indexjs
或如果您可以在测试html中包含<iframe>
,则可以
<iframe src="urlWithinYourDomain.html" style="display:none" id="iframeId"></iframe>
并在indexjs
var qunitTestrunnerToolbar_element = document.getElementById('iframeId').contentWindow.document.getElementById('qunit-testrunner-toolbar');
如果你喜欢html方式。