火狐扩展开发：获得最近访问的列表

function getHistoryByTime(days) {
    var historySvc = Components.classes["@mozilla.org/browser/nav-history-service;1"].getService(Components.interfaces.nsINavHistoryService);
    if (days == null || days == undefined) {
        days = 7;
    }
    var list = new Array();
    var query = historySvc.getNewQuery();
    query.searchTerms = "firefox";
    var query2 = historySvc.getNewQuery();
    query2.beginTimeReference = query2.TIME_RELATIVE_NOW;
    query2.beginTime = -24 * parseInt(days) * 60 * 60 * 1000000;
    query2.endTimeReference = query2.TIME_RELATIVE_NOW;
    query2.endTime = 0;
    var options = historySvc.getNewQueryOptions();
    options.sortingMode = historySvc.SORT_BY_VISITCOUNT_DESCENDING;
    options.queryType = historySvc.QUERY_TYPE_HISTORY;
    options.maxResults = 10;
    options.resultType = historySvc.RESULTS_AS_VISIT;
    var result = historySvc.executeQueries([query, query2], 2, options);
    var cont = result.root;
    cont.containerOpen = true;
    for (var i = 0; i < cont.childCount; i++) {
        var node = cont.getChild(i);
        if (node != null && node != undefined) {
            if (node.uri && !node.uri.indexOf("file") == 0) {
                var entry = {
                    title: node.title == null ? node.uri : node.title,
                    pic: "",
                    icon: node.icon,
                    url: node.uri
                };
                list.push(entry);
            }
        }
    }
    cont.containerOpen = false;
    return list;
}