WebSQL. Insert в цикле FOR или WHILE

var db = openDatabase("testdb", "1.0", "Web SQL Storage", 1 * 1024 * 1024); 
db.transaction( 
  function(tx) { 
    tx.executeSql("CREATE TABLE IF NOT EXISTS test (id TEXT NOT NULL PRIMARY KEY," + "idx INTEGER)", [], null, null); 
  }); 
var a = 10; 
var i = 0; 
while (i < a) { 
  function uid() { 
    return 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'.replace(/[xy]/g, function(c) { 
      var r = Math.random() * 16 | 0, 
        v = c == 'x' ? r : (r & 0x3 | 0x8); 
      return v.toString(16); 
    }); 
  }; 
  db.transaction( 
    function(tx) { 
      tx.executeSql("INSERT INTO test(id, idx) VALUES (?, ?)", [uid(), i], null, null); 
      console.log(i); 
    } 
  ); 
  i++; 
}

var db = openDatabase("testdb", "1.0", "Web SQL Storage", 1*1024*1024); 
db.transaction( 
	function(tx) { 
		tx.executeSql("CREATE TABLE IF NOT EXISTS test1 (id TEXT NOT NULL PRIMARY KEY, idx INTEGER, url TEXT)", [], null, null); 
}); 
var i = 0; 
var list = $('a[class*=js-gps-track]'); 
while (i < list.length){ 
	a = list[i].href 
	function uid() { 
		return 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'.replace(/[xy]/g, function(c) { 
			var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8); 
			return v.toString(16); 
		}); 
	}; 
	(function(i){ 
		db.transaction( 
			function(tx){ 
				tx.executeSql("INSERT INTO test1(id, idx, url) VALUES (?, ?, ?)", [uid(), i, a], null, null); 
				console.log(i); 
			} 
		);	 
	})(i); 
		i++; 
}