为什么indexdb创建索引以后，从后台拉过来的数据就进不去，调试也不报错？

Question

function insertAnObj(indexDbName,json,num) {

    var openRequest = indexedDB.open(indexDbName,1);
    openRequest.onerror = function(e) {//当创建数据库失败时候的回调
        console.log("Database error: " + e.target.errorCode);
    };
    openRequest.onsuccess = function(event) {
        console.log("Database created");
        db = openRequest.result; //创建数据库成功时候，将结果给db，此时db就是当前数据库
        //alert("this is :"+db);
        //打开和userinfo相关的objectstore的事物
       /*未打印*/
        var Notprint = db.transaction("Notprint",'readwrite');
        /*已打印快递单*/
        var Already=db.transaction("Already",'readwrite');
        /*已打印发货单*/
        var invoices=db.transaction("invoices",'readwrite');
        /*已录单*/
        var Recorded=db.transaction("Recorded",'readwrite');
        /*已发货*/
        var Shipped=db.transaction("Shipped",'readwrite');
        /*退款管理*/
        var Refund=db.transaction("Refund",'readwrite');

        switch (num){
            case 0:
                var number=Notprint;
                var numb="Notprint"
                break;
            case 1:
                var number=Already;
                var numb="Already"
                break;
            case 2:
                var number=invoices;
                var numb="invoices"
                break;
            case 3:
                var number=Recorded;
                var numb="Recorded"
                break;
            case 4:

                var number=Shipped;
                var numb="Shipped"
                break;
            case 5:
                var number=Refund;
                var numb="Refund"
                break;
        }

        var store=number.objectStore(numb);
        for(var i=0;i<json.length;i++){


            store.add(json[i]);//将对象添加至userinfo相关的objectstore中
        }
    };
    openRequest.onupgradeneeded = function(event) {
        var db = event.target.result;
        //在第一次创建数据库的时候，就创建userinfo相关的objectstore，以供后面添加数据时候使用
        if(!db.objectStoreNames.contains('Refund')){
            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('Refund',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});


        }

        if(!db.objectStoreNames.contains('Shipped')){
            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('Shipped',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});
        }

        if(!db.objectStoreNames.contains('Recorded')){
            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('Recorded',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});
        }

        if(!db.objectStoreNames.contains('invoices')){
            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('invoices',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});
        }

        if(!db.objectStoreNames.contains('Already')){
            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('Already',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});
        }

        if(!db.objectStoreNames.contains('Notprint')){

            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('Notprint',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});


        }


    }
}

代码有些长，  就是我从后台拿过来的数据 传进来，   没有建索引的时候很正常 数据能正常存储进来，可是我一但建立了索引那么

 if(!db.objectStoreNames.contains('Shipped')){
            //keyPath:Javascript对象，对象必须有一属性作为键值
            var store=db.createObjectStore('Shipped',{keyPath:"groupId"});
            store.createIndex('buyerName','name',{unique:true});
        }

这个表里  包括索引里 都没有数据，调试也没有报错   ！  来大神拯救