源码：

/*************************************/
/* Helman, heldes.com      */
/* helman at heldes dot com    */
/* sqlitedb.js           */
/* SQLite Database Class For HTML5 */
/*************************************/

function cDB(confs){
  var ret = {
    _db: null,
    _response: null,
    _error: null,
    check : function(tbl){
      if(!this._db) return false;
      var _sql = '', _sqlField='', _field=[];
 
      for(var i=0;i<tbl.length;i++){
        _sql = "CREATE TABLE IF NOT EXISTS "+tbl[i].table+" (";
        _field = tbl[i].properties;
        _sqlField = '';
 
        for (var j=0;j<_field.length;j++){
          _sqlField += ',`'+_field[j].name+'` '+_field[j].type;
        }
 
        _sql += _sqlField.substr(1)+");";
 
        this.query(_sql,null,null,null);
      }
 
      return true;
    },
    getResult:function(){
      return this._response;
    },
    getError:function(){
      return this._error;
    },
    callback_error: function(tx,_er){
      var err = '';
      if(typeof(tx) == 'object'){
        for(var q in tx){
          err += q+' = "'+tx[q]+'"; ';
        }
      }else{
        err += tx+'; ';
      }
      if(typeof(_er) == 'object'){
        for(var q in _er){
          err += q+' = "'+_er[q]+'"; ';
        }
      }else if(typeof(_er) == 'undefined'){
        err += _er+'; ';
      }
      console.log(err);
      //if(callback) callback();
      return false;
    },
    query: function(sql,callback,params,er){
      if(!this._db) return false;
      var self = this;
      function _er(tx,__er){
        __er = jQuery.extend(__er,{sql:sql});
        if(er) er(tx,__er);
        else self.callback_error(tx,__er);
      };
      this._db.transaction(function(tx){
        tx.executeSql(sql,(params?params:[]),callback,_er);
      }, _er);
    },
    update:function(tbl,sets,clauses,callback){
      var __sql = 'UPDATE '+tbl, _field = null, __set = '', __clause = '',__values=[];
 
      for(var i=0;i<sets.length;i++){0
        _field = sets[i];
        for(var j=0;j<_field.length;j++){
          __set += ',`'+_field[j].name+'`=?';
          __values.push(_field[j].value);
        }
      }
 
      for(var i=0;i<clauses.length;i++){
        __clause += ',`'+clauses[i].name+'`=?';
        __values.push(clauses[i].value);
      }
      __sql += ((__set!='')?' SET '+__set.substr(1):'')+((__clause!='')?' WHERE '+__clause.substr(1):'')+';';
      this.query(__sql,callback,__values);
      return true;
    },
    remove:function(tbl,clauses){
      var __sql = 'DELETE FROM '+tbl, __clause = '';
 
      for(var i=0;i<clauses.length;i++)
        __clause += ',`'+clauses[i].name+'`="'+escape(clauses[i].value)+'"';
 
      __sql += ' WHERE '+((__clause!='')?__clause.substr(1):'FALSE')+';';
 
      this.query(__sql);
      return true;
    },
    multiInsert: function(tbl,rows,callback,er){
      if(!this._db) return false;
      var self = this;
      var __sql = '', _field = null, __field = '', __qs = [], __values = [];
 
      this._db.transaction(function(tx){
        for(var i=0;i<rows.length;i++){
          __qs = [];
          __values = [];
          __field = '';
          _field = rows[i];
 
          for(var j=0;j<_field.length;j++){
            __field += ',`'+_field[j].name+'`';
            __qs.push('?');
            __values.push(_field[j].value);
          }
          tx.executeSql('INSERT INTO '+tbl+' ('+__field.substr(1)+') VALUES('+__qs.join(',')+');',__values,function(){return false;},(er ? er : self.callback_error));
        }
      }, self.callback_error, function(){
        if(callback) callback();
        return true;
      });
      return true;
    },
    insert:function(tbl,rows,callback){
      var __sql = '', _field = null, __field = '', __qs = [], __values = [], __debug = '';
 
      for(var i=0;i<rows.length;i++){
        __qs = [];
        __field = '';
        _field = rows[i];