我想通过离子我使用sqlite插件做一个简单的查询，我尝试了几个语句（插入，更新，删除）一切正常。
但是我遇到了select语句的问题
无法阅读属性＆＃39; item＆＃39; of undefinedCannot read property＆＃39; item＆＃39;未定义的
注意：我之前创建了一个名为cars的表，其中包含两列类型和年份
这里是完整的代码
// Ionic Starter App
// angular.module is a global place for creating, registering and retrieving Angular modules
// 'starter' is the name of this angular module example (also set in a <body> attribute in index.html)
// the 2nd parameter is an array of 'requires'
var app = angular.module('starter', ['ionic']);
app.run(function ($ionicPlatform) {
$ionicPlatform.ready(function () {
if (cordova.platformId === "ios" && window.cordova && window.cordova.plugins.Keyboard) {
// Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
// for form inputs)
cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
// Don't remove this line unless you know what you are doing. It stops the viewport
// from snapping when text inputs are focused. Ionic handles this internally for
// a much nicer keyboard experience.
cordova.plugins.Keyboard.disableScroll(true);
}
if (window.StatusBar) {
StatusBar.styleDefault();
}
// Select from table
var db = null;
document.addEventListener('deviceready', function () {
//db = window.sqlitePlugin.openDatabase({ name: 'demo.db', location: 'default' });
db = window.openDatabase("localDB", "1.0", "Cordova Demo", 200000);
db.transaction(function (tx) {
var query = 'SELECT * FROM cars';
tx.executeSql(query, [], function (res)
{
alert(res.rows.item(0).type);
});
})
});
});
});<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
<!-- IF using Sass (run gulp sass first), then uncomment below and remove the CSS includes above
<link href="css/ionic.app.css" rel="stylesheet">
-->
<!--For users deploying their apps to Windows 8.1 or Android Gingerbread, platformOverrided.js
will inject platform-specific code from the /merges folder -->
<script src="js/platformOverrides.js"></script>
<!-- ionic/angularjs js -->
<script src="lib/ionic/js/ionic.bundle.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app3.js"></script>
</head>
<body ng-app="starter">
<ion-pane>
<ion-header-bar class="bar-stable">
<h1 class="title">SQLITE DATABASE </h1>
</ion-header-bar>
<ion-content>
</ion-content>
</ion-pane>
</body>
</html>
答案 0 :(得分：1)
试试这个：
tx.executeSql(query, [], function (tx,res){
alert(res.rows.item(0).type);
});