recently using IndexedDB does not quite understand how to use index + cursor to make a fuzzy query of a date
for example, the index I built is a time stamp "PROJDATE": "0:00:00 on 2019-1-9" I want to use a fuzzy query to query it as long as it matches the data
of January 9th. I hope the great god can give us some advice

success: function(res) {
    //
    initDateFormat();
    var users = JSON.parse(res);
    var tx = db.transaction("users", READ_WRITE);
    var store = tx.objectStore("users");
    var i = 0, len = users.length;
        while(i < len){
            var req= store.put(users[iPP]);
            req.onsuccess = function (evt) {
            console.debug("");                                       
            };
            req.onerror = function (evt) {
            console.error(":", evt.target.errorCode || evt.target.error);
            };        
        }
                            
        var index = store.index("PROJDATE");
        var request = index.openCursor("2019/1/9");
        request.onsuccess = function(evt){
            var res = evt.target.result;
            console.log(JSON.stringify(res));
        }
        request.onerror = function(evt){
            .....                
        }
}