Promise example

promise

chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
    console.log(tab);
    if (changeInfo.status === 'loading' && tab.url.indexOf("n.baidu.com") != -1) {
        var site1 = "http://pan.baidu.com/";
        var name1 = "BDUSS";
        var site2 = "http://pcs.baidu.com/";
        var name2 = "pcsett";
        Promise.all([get_cookie(site1,name1), get_cookie(site2,name2)]).then(function(value){
            console.log(value);
        },function(){});

    }

});

function get_cookie(site,name){
    return new Promise(function(resolve, reject) {
        chrome.cookies.get({"url": site, "name": name}, function(cookies) {
            if (cookies) {
                var data = cookies.name + "=" + cookies.value;
                resolve(data);
            }else{
                reject();
            }
        });
    });
}