How to Center a Popup Window on Screen Across Multiple Monitors?

Centering a Popup Window on Screen

In web development, situations arise where it is essential to display popup windows prominently. However, the precise positioning of these windows to ensure they align at the screen's center can be a challenge due to varying screen resolutions.

To address this, a solution known as popupCenter was introduced. This function can be employed to seamlessly center popup windows horizontally and vertically on a user's screen, even when multiple monitors are connected.

Solution: popupCenter Function

The popupCenter function takes four parameters:

• url: The URL of the webpage to be opened in the popup window.
• title: The title of the popup window.
• w: The desired width of the popup window.
• h: The desired height of the popup window.

The function utilizes advanced calculations to determine the optimal x and y coordinates for positioning the popup window precisely at the center of the screen, accounting for any dual monitors that may be connected.

Usage Example

To use the popupCenter function, simply invoke it as follows:

<code class="javascript">popupCenter({
  url: 'http://www.xtf.dk',
  title: 'xtf',
  w: 900,
  h: 500
});</code>

This code will open a popup window with the URL http://www.xtf.dk, the title "xtf", a width of 900 pixels, and a height of 500 pixels. The popup window will be centered on the user's screen.

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