detect multi tab

detect multi tab

by ramesh valasa

JavaScript

if (+localStorage.tabCount > 0)
    console.log('Already open!');
else
    localStorage.tabCount = 0;

localStorage.tabCount = +localStorage.tabCount + 1;
console.log(" load " + localStorage.tabCount);

window.onunload = function () {
    localStorage.tabCount = +localStorage.tabCount - 1;
    console.log(" unload " + localStorage.tabCount);
};