How To Call Parent Window Function From Child Window Jquery

When working with jQuery, it's common to encounter situations where you need to interact between a parent window and a child window. In particular, calling a function in the parent window from the child window can be a useful functionality. Let's go over how you can achieve this in an efficient and straightforward manner.

Firstly, we need to ensure that both the parent and child windows are in the same domain to avoid any cross-origin issues that might arise. This is a critical step in enabling communication between the two windows.

Next, in the parent window, you will need to define the function that you want to call from the child window. Let's say you have a function named `parentFunction` that you want to execute from the child window. Here's an example of how you can define this function in the parent window:

function parentFunction() {
  console.log('Parent function called from the child window!');
  // Add your desired functionality here
}

Now, in the child window, you can utilize jQuery to call this function in the parent window. You can achieve this by accessing the parent window object using `window.opener`. Here's how you can call the `parentFunction` from the child window using jQuery:

$(document).ready(function() {
  // Calling the parentFunction from the child window
  window.opener.parentFunction();
});

By using `window.opener`, you can access the parent window's functions and properties easily. It establishes a connection between the child window and the parent window, allowing you to invoke functions defined in the parent window from the child window.

It's worth mentioning that this approach is particularly useful when dealing with scenarios like modal windows, pop-ups, or iframes where communication between different windows is required.

Additionally, you can pass parameters to the parent function by modifying the function definition in the parent window and passing the necessary parameters when you call it from the child window. This enables you to send data along with the function call, enhancing the flexibility of your implementation.

In conclusion, calling a parent window function from a child window in jQuery is a simple yet powerful feature that can enhance the interactivity and functionality of your web applications. By following the steps outlined above and understanding how to establish communication between windows, you can leverage this capability effectively in your projects.