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How to use postmessage
postMessage is a JavaScript method for passing messages between browser windows. It allows messages to be sent between open browser windows or tabs without having to bind them to the same domain name or port. If you want to know more about postmessage, you can read the article below this topic.
How to use postmessageBasic usage of the postMessage method: 1. In the window or tab where you want to send the message, use the postMessage method to send the message to the target window. It accepts two parameters: the message object to be sent and an identifier of the target window (optional); 2. In the target window, use the addEventListener method to listen for the message event to receive messages from other windows.
postMessage implements cross-domain and cross-window messagingThis time I will bring you postMessage to implement cross-domain and cross-window messaging. What are the precautions for postMessage to implement cross-domain and cross-window messaging? The following is a practical case, let's take a look.
How do you use postMessage in javascript?The click event of the button on page C sends a message small C to page F. When page F receives the message small C executes the logic LC. After LC execution is completed, page F sends a message small F to page C. When page C receives the message small F executes the logic. LF. In a word, it means that pages F and C communicate with each other.
Code for postmessage in Html5 to implement value transfer between child and parent windowsWhat this article shares with you is about the postmessage code in Html5 that implements value transfer between child and parent windows. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
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