本文介绍了如何读取sqlite3在javascript中的phonegap应用程序中的数据的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在iphone的phonegap中的一个应用程序,我有一个数据库在sqlite3包含纬度和经度的值和对应的区域名称。我在应用程序中复制了sqlite数据文件。我需要从sqlite获取数据并在视图中的表中显示数据,那么如何在javascript中获取数据?
I am working on an application in phonegap for iphone, where i have a database in sqlite3 which contains values of latitudes and longitudes and corresponding there area names. I have copied the sqlite data file within the application. I need to fetch the data from the sqlite and display the data in the table in the view, so how to fetch the data in the javascript?
推荐答案
@PiTheNumber试试代码
@PiTheNumber try that code
var arr = new Array();
// Wait for PhoneGap to load
//
document.addEventListener("deviceready", onDeviceReady, false);
// Populate the database
//
function populateDB(tx) {
tx.executeSql('DROP TABLE IF EXISTS DEMO');
tx.executeSql('CREATE TABLE IF NOT EXISTS DEMO (id unique, data)');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (1, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (2, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (3, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (4, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (5, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (6, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (7, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (8, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (9, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (10, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (11, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (12, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (13, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (14, "Second row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (15, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (16, "Second row")');
}
// Query the database
//
function queryDB(tx) {
tx.executeSql('SELECT * FROM DEMO', [], querySuccess, errorCB);
}
// Query the success callback
//
function querySuccess(tx, results) {
var len = results.rows.length;
console.log("DEMO table: " + len + " rows found.");
for (var i=0; i<len; i++){
$('#home').append('<li><a href="#artists">'+results.rows.item(i).data+'</a></li>');
}
console.log("aaa"+arr+"aaa");
}
// Transaction error callback
//
function errorCB(err) {
console.log("Error processing SQL: "+err.code);
}
// Transaction success callback
//
function successCB() {
var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
db.transaction(queryDB, errorCB);
}
// PhoneGap is ready
//
function onDeviceReady() {
var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
db.transaction(populateDB, errorCB, successCB);
}
这篇关于如何读取sqlite3在javascript中的phonegap应用程序中的数据的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!