background.js

function autoSendSmsIfNotAnswer(dest, msg) {
    var app_id = localStorage['app_id']
    var access_token = localStorage['access_token']
    var txn_ref = localStorage['txn_ref']
    if (isEmpty(app_id) || isEmpty(access_token) || isEmpty(txn_ref)) {
        return;
    };

    $.ajax({
        type: "POST",
        url: "https://secure.hoiio.com/open/voice/query_status",
        data: ({
            app_id: app_id,
            access_token: access_token,
            txn_ref: txn_ref
        }),
        success: function (result) {
            if (result.status == 'success_ok') {
                if (result.call_status_dest1 != 'answered') {
                    sendSmsMsg(dest, msg);
                }
            }
        }
    });
}
chrome.extension.onRequest.addListener(

function (request, sender, sendResponse) {
    if (request.func == "autoSendSms") {
        setTimeout(function () {
            autoSendSmsIfNotAnswer(request.dest, request.msg);
        }, 60000);
    } else if (request.func == "addRemoveTab") {
        addOnRemoveTabListener(request.tabId);
    }
});

function addOnRemoveTabListener(msgTabId) {
    chrome.tabs.onRemoved.addListener(function (tabid, removeInfo) {
        if (tabid == msgTabId) {
            localStorage['is_open_optiontab'] = false;
        }
    });
}