使用phonegap操作数据库的实现方法

Gaia ·

更新时间:2024-11-13

· 683 次阅读

实例如下：


<!DOCTYPE html> 
<html> 
    <head> 
        <meta charset="UTF-8"> 
        <title>Database Example</title> 
        <script type="text/javascript" charset="UTF-8" src="cordova.js"></script> 
        <script type="text/javascript" charset="UTF-8"> 
            document.addEventListener("deviceready", onDeviceReady, false); 
            function onDeviceReady() { 
                var db=window.openDatabase("Test","1.0","Test",200000); 
                db.transaction(populateDB,errorDB,successDB); 
            } 
            //初始化数据库数据 
            function populateDB(tx){ 
                tx.executeSql('DROP TABLE IF EXISTS test1'); 
                tx.executeSql('CREATE TABLE IF NOT EXISTS test1 (id unique,name)'); 
                tx.executeSql('INSERT INTO test1(id,name) VALUES(1,"Tony")'); 
                tx.executeSql('INSERT INTO test1(id,name) VALUES(2,"Bill")'); 
                tx.executeSql('INSERT INTO test1(id,name) VALUES(3,"Tony")'); 
            } 
            //查询方法 
            function queryDB(tx){ 
                tx.executeSql('SELECT * FROM test1',[],querySuccess,errorDB); 
            } 
            //查询成功回调 
            function querySuccess(tx,results){ 
                var len=results.rows.length; 
                var status=document.getElementById("status"); 
                var string ="Rows:"+len+"<br />"; 
                for(var i=0;i<len;i++){ 
                    string+=results.rows.item(i).name+"<br />"; 
                } 
                status.innerHTML=string; 
            } 
            //执行初始化数据成功后的回调 
            function successDB(){ 
                var db=window.openDatabase("Test","1.0","Test",200000); 
                db.transaction(queryDB,errorDB); 
            } 
            //失败回调 
            function errorDB(err){ 
                alert('Error processing SQL:'+err.code); 
            } 
        </script> 
    </head> 
    <body> 
        <h1>Names</h1> 
        <div id='status'></div> 
    </body> 
</html>

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数据 phonegap 数据库

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