“ | 提供对设备的存储选项的访问。 |
var dbShell = window.openDatabase(name, version, display_name, size);
var db = window.openDatabase("test", "1.0", "Test DB", 1000000);
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function populateDB(tx) { tx.executeSql('DROP TABLE DEMO IF EXISTS'); 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")'); } function errorCB(err) { alert("Error processing SQL: "+err.code); } function successCB() { alert("success!"); } var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000); db.transaction(populateDB, errorCB, successCB);
var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000); db.changeVersion("1.0", "1.1");
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function populateDB(tx) { tx.executeSql('DROP TABLE DEMO IF EXISTS'); 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")'); } function errorCB(err) { alert("Error processing SQL: "+err); } function successCB() { alert("success!"); } var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000); db.transaction(populateDB, errorCB, successCB);
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function queryDB(tx) { tx.executeSql('SELECT * FROM DEMO', [], querySuccess, errorCB); } function querySuccess(tx, results) { // 因为没有插入记录,所以返回值为空 console.log("Insert ID = " + results.insertId); // 因为这是一条查询语句所以返回值为0 console.log("Rows Affected = " + results.rowAffected); // 返回查询到的记录行数量 console.log("Insert ID = " + results.rows.length); } function errorCB(err) { alert("Error processing SQL: "+err.code); } var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000); db.transaction(queryDB, errorCB);
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function queryDB(tx) { tx.executeSql('SELECT * FROM DEMO', [], querySuccess, errorCB); } function querySuccess(tx, results) { var len = results.rows.length; console.log("DEMO table: " + len + " rows found."); for (var i=0; i<len; i++){ console.log("Row = " + i + " ID = " + results.rows.item(i).id + " Data = " + results.rows.item(i).data); } } function errorCB(err) { alert("Error processing SQL: "+err.code); } var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000); db.transaction(queryDB, errorCB);
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var storage = window.localStorage;
var keyName = window.localStorage.key(0);
window.localStorage.setItem("key", "value");
var value = window.localStorage.getItem("key"); // value的值现在是"value"
window.localStorage.removeItem("key");
window.localStorage.clear();
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