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The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.

The postMessage() method in web development facilitates secure cross-origin communication between Window objects, such as a parent window and a child pop-up, or a page and an embedded iframe. This method allows scripts on different pages, potentially from different origins, to exchange data securely, bypassing the standard same-origin policy.