NativeJS - Tab menu

if (navigator.userAgent.indexOf('gonative') > -1) {
window.location.href = 'gonative://tabs/select/1';
}

var tabs = {
    "enabled": true,
    "items": [{
        "icon": "fa-cloud",
        "label": "Tab 1",
        "url": "javascript:alert('You selected tab 1')"
    }, {
        "icon": "fa-globe",
        "label": "Tab 2",
        "url": "javascript:alert('You selected tab 2')"
    }, {
        "icon": "fa-users",
        "label": "Tab 3",
        "url": "javascript:alert('You selected tab 3')"
    }]
};
​
var json = JSON.stringify(tabs);
window.location.href='gonative://tabs/setTabs?tabs=' + encodeURIComponent(json);