phonegap循环调用insert语句，只有最后一次的数据入库了，费解
var category_id;var parent_category_id;
var category_name;
function insertCategory(id,parent_id,name){
category_id = id;
parent_category_id = parent_id;
category_name = name;
egory_id+"\n"+category_name);
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(insertCategory_, errorCB);
}
function insertCategory_(tx){
var insertSQL = "INSERT INTO PRODUCT_CATEGORY "
+ "(PRODUCT_CATEGORY_ID, "
+ "PRIMARY_PARENT_CATEGORY_ID, "
+ "CATEGORY_NAME) "
+ "VALUES ('" + category_id + "',"
+ "'" + parent_category_id + "',"
+ "'" + category_name + "')";
console.log(insertSQL);
tx.executeSql(insertSQL);
}
function test() {
for(var i=0;i<3;i++){
insertCategory(i,"parentID_"+i,"categoryName_"+i);
}
}循环结束后，只有最后一次循环的数据入库了，这是怎么回事呢？求指点！！感激不尽
第8行代码是无用代码，可忽略不计 看看如下代码,再就是研究一下官方html5 Web SQL 看看有些东西到底是这么用的谢谢你对我们的支持
<html>
<head>
<title>Web SQL Demo</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<script src="jquery.js"></script>
<script src="phonegap.js"></script>
<script>
function openDB() {
var db = openDatabase(
"body_building_db", // 数据库的短名字
"1.0", // 数据库的版本
"Database for body building", // 数据库的长名字
1024*1024 // 允许的最大尺寸（字节为单位）
);
return db;
}
function createBodyBuildingTable(db) {
var sql = "CREATE TABLE IF NOT EXISTS body_building (id INTEGER PRIMARY KEY AUTOINCREMENT, note TEXT, date DATE);";
db.transaction(function (tx) {
tx.executeSql(
sql,// 要执行的SQL语句
[], // SQL语句的参数列表
function () { // 成功的回调函数
// 插入样本数据
record = {note: "今天练了两个小时", date: new Date(2012, 2, 1)};
insertRecord(db, record);
record = {note: "今天重点练习了腰部", date: new Date(2012, 2, 4)};
insertRecord(db, record);
record = {note: "手臂练得好疼", date: new Date(2012, 2, 7)};
insertRecord(db, record);
record = {note: "洗完澡，称了一下，增重了，呵呵", date: new Date(2012, 2, 11)};
insertRecord(db, record);
},
statementErrorCallback // 语句执行失败的回调函数
);
console.log("Execute sql...");
}, transactionErrorCallback// 事务创建失败的回调函数
);
console.log("create table...");
}
function transactionErrorCallback(error) {
alert("Error: " + error.message);
}
function statementErrorCallback(transaction, error) {
alert("Error: " + error.message);
}
function insertRecord(db, bodyBuildingRecord) {
var sql = "INSERT INTO body_building (note, date) VALUES (?,?);"
db.transaction(function (tx) {
tx.executeSql(
sql,
, // SQL语句的参数列表
function() {
console.log('success');
},
statementErrorCallback
);
});
}
function getRecords(db) {
var sql = "SELECT * FROM body_building;";
db.transaction(function (tx) {
tx.executeSql(
sql,
[], // SQL语句的参数列表
function(transaction, resultSet) {
var rows = resultSet.rows;
for (var i = 0; i < rows.length; i++) {
// 每条记录显示为一个列表项
$("#body_building").append('<li>'+ rows.item(i).note + ' ' + '</li>');
}
},
statementErrorCallback
);
});
}
// 应用入口点
document.addEventListener("deviceready", function() {
var db = openDB();
createBodyBuildingTable(db);
$("#load_button").click(function() {
// 获取数据并更新页面
getRecords(db);
});
});
</script>
</head>
<body>
<h1>Web SQL演示</h1>
<input type="button" id="load_button" value="加载" />
<ul id="body_building"></ul>
</body>
</html>
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