carry forward session storage one page to another page in javascript
// transfers sessionStorage from one tab to another
var sessionStorage_transfer = function(event) {
if(!event) { event = window.event; } // ie suq
if(!event.newValue) return; // do nothing if no value to work with
if (event.key == 'getSessionStorage') {
// another tab asked for the sessionStorage -> send it
localStorage.setItem('sessionStorage', JSON.stringify(sessionStorage));
// the other tab should now have it, so we're done with it.
localStorage.removeItem('sessionStorage'); // <- could do short timeout as well.
} else if (event.key == 'sessionStorage' && !sessionStorage.length) {
// another tab sent data <- get it
var data = JSON.parse(event.newValue);
for (var key in data) {
sessionStorage.setItem(key, data[key]);
}
}
};
// listen for changes to localStorage
if(window.addEventListener) {
window.addEventListener("storage", sessionStorage_transfer, false);
} else {
window.attachEvent("onstorage", sessionStorage_transfer);
};
// Ask other tabs for session storage (this is ONLY to trigger event)
if (!sessionStorage.length) {
localStorage.setItem('getSessionStorage', 'foobar');
localStorage.removeItem('getSessionStorage', 'foobar');
};