muhammadkashif / sysend.js

Send messages between open pages or tabs in same browser

sysend.js

sysend.js is small library that allow to send message between pages that are open in the same browser. They need to be in same domain. The library don't use any dependencies and use HTML5 LocalStorage API. You can send any object that can be serialized to JSON or just send empty notification.

Tested on GNU/Linux in Chromium 34, FireFox 29, Opera 12.16 (64bit)

Usage

window.onload = function() {
    sysend.on('foo', function(message) {
        console.log(message);
    });
    var input = document.getElementsByTagName('input')[0];
    document.getElementsByTagName('button')[0].onclick = function() {
        sysend.broadcast('foo', {message: input.value});
    };
};

Demo

Open this demo page in two tabs/windows

API

sysend object:

• on(name, callback) - callback(object, name) - add event of specified name
• off(name [, callback]) - remove callback
• broadcast(name [, object]) - send object and fire all events with specified name (in different pages that register callback using on). You can also just send notification without object

License

Copyright (C) 2014 Jakub Jankiewicz http://jcubic.pl
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.