Web-SQL: 不创建超过 2 个表

Question

我无法在数据库中创建超过 2 个 table。

我试过的代码：

    var db = openDatabase('myDB', '1.0', 'myDatabase',10*1024*1024);
    db.transaction(function (nw){
        nw.executeSql('Drop TABLE user');           
    });

    function db1(){
        var db = openDatabase('myDB', '1.0', 'myDatabase',10*1024*1024);
    db.transaction(function (tx){
            tx.executeSql("CREATE TABLE IF NOT EXISTS login(empid varchar(10), name varchar(10), pass varchar(20), manager varchar(20)");
            tx.executeSql('INSERT INTO login (empid,name,pass,manager) VALUES ("1234567","Krishnaji","12345","9999999")');
            tx.executeSql('INSERT INTO login (empid,name,pass,manager) VALUES ("1000001","Gourav","12345","1234567")');
            tx.executeSql('INSERT INTO login (empid,name,pass,manager) VALUES ("1000002","Manju","12345","1234567")');
            tx.executeSql('CREATE TABLE IF NOT EXISTS user(empid varchar(10))');
            var x = $('#nameT').val();
            console.log(x);
            tx.executeSql('INSERT INTO user (empid) VALUES (?)', [x]);
            var u = $("#nameT").val();
            var p = $("#nameP").val();
            console.log(u);
            console.log(p);
            tx.executeSql('SELECT * FROM login WHERE empid=? and pass=?',[u,p], function valid(){
                var len = results.rows.length;
                console.log(len);
                if (len == 1) {
                    window.location.assign("www/landing.html");
                } else{
                    alert("Invalid Employee ID or Password");
                };
            });
        });

        }

代码有问题吗？ None 的成功函数正在执行，但查询正确。

Answer 1

发现问题：

function valid(tx,results){}

(tx,results) 丢失。