Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Two way communication between the browsing contexts in HTML5
Two-way communication between the browsing contexts is called channel messaging. It is useful for communication across multiple origins.
While creating messageChannel, it internally creates two ports to send the data and forwarded to another browsing context.
- postMessage() − Post the message throw channel
- start() − It sends the data
- close() − it close the ports
In this scenario, we are sending the data from one iframe to another iframe. Here we are invoking the data in function and passing the data to DOM.
var loadHandler = function(){
var mc, portMessageHandler;
mc = new MessageChannel();
window.parent.postMessage('documentAHasLoaded','http://foo.example',[mc.port2]);
portMessageHandler = function(portMsgEvent){
alert( portMsgEvent.data );
}
mc.port1.addEventListener('message', portMessageHandler, false);
mc.port1.start();
}
window.addEventListener('DOMContentLoaded', loadHandler, false);
Updated on: 29-Jan-2020
225 Views
Advertisements