HTML5学习笔记：HTML5基于本地存储SQLite的每日工作任务清单程序.[只支持chrome]

使用环境：Chrome 36.0...+

技术：HTML5

目的：习练HTML5

功能概述：记录管理每天工作内容，便签清单

HTML5+CSS3呈现UI，JavaScript操作数据库，SQLite存储数据

预览：

关键代码：

             // save data
             function dataStorage(o) {

                 for (var i = 0; i < o.childNodes.length; i++) {
                     if (o.childNodes[i].nodeName == "P") {
                         o.removeChild(o.childNodes[i]);
                     }
                 }

                 if (o.innerText.replace(/\s+/g, "").length == 0) {
                     return;
                 }

                 var task = new Object();
                 task.task = o.innerText;
                 task.progressid = 2;
                 task.progress = ProgressEnum[task.progressid];
                 if (o.id == "newEditNode") {
                     o.removeAttribute("id");
                     task.year = nowDate.getFullYear();
                     task.month = nowDate.getMonth() + 1;
                     task.day = nowDate.getDate();

                     // open a database transaction
                     DB.transaction(function(tx) {
                         // insert into table(task,progress,year,month,day)
                         tx.executeSql('INSERT INTO ' + TableName + ' VALUES(?,?,?,?,?,?,0)', [task.task, task.progress, task.progressid, task.year, task.month, task.day],
                         // success:show success log in console
                         function(tx, rs) {
                             queryData(o.parentElement.id);
                             console.log("save data successfully!");
                         },
                         // fail:show error log in console
                         function(tx, error) {
                             console.log(error.source + "::" + error.message);
                         });
                     });
                 } else {
                     DB.transaction(function(tx) {
                         // update
                         tx.executeSql('UPDATE ' + TableName + ' SET task=? WHERE rowid=?', [task.task, o.id],
                         // success:show success log in console
                         function(tx, rs) {
                             queryData(o.parentElement.id);
                             console.log("update data successfully!");
                         },
                         // fail:show error log in console
                         function(tx, error) {
                             console.log(error.source + "::" + error.message);
                         });
                     });
                 }
             }

             // query data
             function queryData(parentId) {
                 document.getElementById(parentId).innerHTML = "";
                 DB.transaction(function(tx) {
                     tx.executeSql('SELECT rowid,* FROM ' + TableName + ' WHERE enabled=0 ORDER BY progressid ASC, rowid DESC', [], function(tx, rs) {
                         for (var i = 0; i < rs.rows.length; i++) {
                             createNode(rs.rows.item(i), parentId);  //create node to show data
                         }
                     });
                 });
                 createEditNode(parentId); // create new edit node
             }

             //change current date
             function changeDate(cid, m) {
                 nowDate = new Date(document.getElementById(cid).innerText);
                 if (m == "+") {
                     nowDate.setDate(nowDate.getDate() + 1);
                 } else {
                     nowDate.setDate(nowDate.getDate() - 1);
                 }
                 document.getElementById("currentDate").innerText = nowDate.getFullYear() + "." + (nowDate.getMonth() + 1) + "." + nowDate.getDate();
                 TableName = "doList" + nowDate.getFullYear() + (nowDate.getMonth() + 1) + nowDate.getDate();
                 DB.transaction(function(tx) {
                     //create data table
                     tx.executeSql('CREATE TABLE IF NOT EXISTS ' + TableName + '(task TEXT,progress varchar(300),progressid INTEGER,year INTEGER,month INTEGER,day INTEGER,enabled INTEGER)', []);
                 });
                 queryData("divcontent");
             }

             function load() {
                 if (navigator.appCodeName != "Mozilla") {

                 } else {
                     /* ---- start program --- */
                     // create database
                     nowDate = new Date();
                     ProgressEnum = ["Executing", "Reform", "Pending", "Finished", "Cancel"];
                     TableName = "doList" + nowDate.getFullYear() + (nowDate.getMonth() + 1) + nowDate.getDate();
                     document.getElementById("currentDate").innerText = nowDate.getFullYear() + "." + (nowDate.getMonth() + 1) + "." + nowDate.getDate();
                     DB = openDatabase("toDoList", '', 'To Do list DataBase', 102400);
                     DB.transaction(function(tx) {
                         //create data table
                         tx.executeSql('CREATE TABLE IF NOT EXISTS ' + TableName + '(task TEXT,progress varchar(300),progressid INTEGER,year INTEGER,month INTEGER,day INTEGER,enabled INTEGER)', []);
                     });
                     queryData("divcontent");
                 }
             }

URL:http://dicolancy.github.io/DemoCode/html5/todolist_chrome.html