JavaScript behavior close window

In web development, JavaScript is an important scripting language. In addition to providing users with a good page interaction experience, another important application scenario of JS is to close the window. This article will explain how to close a window using JavaScript.

1. window object

In JavaScript, windows are created and manipulated through the window object. The window object represents the entire browser window or frame. You can use the window.close() method to close the current window.

2. Close the current window

Here is a simple example that demonstrates how to close the current window using JavaScript.

<button onclick="window.close()">关闭窗口</button>

3. Close the parent window or child window

In Web development, nesting of windows is often used, that is, embedding another window in one window. When you have multiple windows, sometimes you need to close other windows. The following are several common situations:

3.1 Close the parent window

To close the parent window, you can use the parent object. The parent object points to the parent window that contains the current window. Use the parent.close() method to close the parent window.

The following is an example:

<button onclick="parent.close()">关闭父窗口</button>

3.2 Close the child window

To close the child window, you can use the reference of the child window. You can open a subwindow through the window.open() method and save its reference in a variable. Use the variable name.close() method to close the child window.

Here is an example:

var myWindow = window.open("http://www.example.com/");
myWindow.close();

4. Close multiple windows

If you need to close multiple windows at the same time, you can use a loop. Here is an example:

var windows = [window1, window2, window3];
for (var i = 0; i < windows.length; i++) {
    windows[i].close();
}

5. Security

It should be noted that closing the window will directly affect the user experience, so it must be used with caution. In addition, the operation of closing the window requires user authorization. Without user authorization, the operation of closing the window will be blocked by the browser, which means that the operation may not be performed properly.

6. Conclusion

This article explains how to close a window using JavaScript. You can use the window.close() method to close the current window, use the parent.close() method to close the parent window, and use the reference of the child window to close the child window. For multiple windows, you can use a loop to close multiple windows. You need to be careful when using JavaScript to close a window, and you must obtain user authorization, otherwise it will be blocked by the browser.

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