慕课在线编辑器

代码提交代码

<!DOCTYPE html>
<html>
    <head lang="en">
        <meta charset="UTF-8">
        <title>离线记事本</title>
        <meta name="viewport" content="width=device-width,initial-scale=1">
        <link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css" />
        <script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
        <script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
    </head>
    <script>
var datatable = null;
var db = openDatabase("note", "", "notebook", 1024 * 100);
//初始化函数方法
function init() {
    datatable = document.getElementById("datatable");
    showAllData();
}
function removeAllData() {
    for(var i = datatable.childNodes.length - 1; i >= 0; i--) {
        datatable.removeChild(datatable.childNodes[i]);
    }
    var tr = document.createElement("tr");
    var th1 = document.createElement("th");
    var th2 = document.createElement("th");
    var th3 = document.createElement("th");
    th1.innerHTML = "标题";
    th2.innerHTML = "内容";
    th3.innerHTML = "时间";
    tr.appendChild(th1);
    tr.appendChild(th2);
    tr.appendChild(th3);
    datatable.appendChild(tr);
}
//显示数据库中的数据
function showData(row) {
    var tr = document.createElement("tr");
    var td1 = document.createElement("td");
    td1.innerHTML = row.title;
    var td2 = document.createElement("td");
    td2.innerHTML = row.content;
    var td3 = document.createElement("td");
    var t = new Date();
    t.setTime(row.time);
    td3.innerHTML = t.toLocaleDateString() + " " + t.toLocaleTimeString();
    tr.appendChild(td1);
    tr.appendChild(td2);
    tr.appendChild(td3);
    datatable.appendChild(tr);
}
//显示所有的数据
function showAllData() {
    db.transaction(function(tx) {
        tx.executeSql("CREATE TABLE IF NOT EXISTS item(title TEXT,content TEXT,time INTEGER)", []);
        tx.executeSql("SELECT * FROM item", [], function(tx, rs) {
            removeAllData();
            for(var i = 0; i < rs.rows.length; i++) {
                showData(rs.rows.item(i))
            }
        })
    })
}
//添加一条记事本数据
function addData(title, content, time) {
    db.transaction(function(tx) {
        tx.executeSql("INSERT INTO item VALUES (?,?,?)", [title, content, time], function(tx, rs) {
                alert("保存成功！");
            },
            function(tx, error) {
                alert(error.source + "::" + error.message);
            }
    )
    })
}
//点击保存按钮
function saveData() {
    var title = document.getElementById("name").value;
    var content = document.getElementById("memo").value;
    var time = new Date().getTime();
    addData(title, content, time);
    showAllData();
}
    
    </script>
    <body onload="init()">
        <div data-role="page" id="pageone">
            <div data-role="header" data-position="fixed">
                <h1>离线记事本</h1>
            </div>
            <div data-role="main" class="ui-content">
                <p align="center">记事</p>
                <table data-role="table" class="ui-responsive">
                    <thead>
                        <tr>
                            <th>标题：</th>
                            <th>内容：</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td><input type="text" id="name"></td>
                            <td><input type="text" id="memo"></td>
                        </tr>
                    </tbody>
                </table>
                <button type="submit" onclick="saveData()">保存</button>
                <table data-role="table" data-mode="" class="ui-responsive" id="datatable">
                </table>
            </div>

</div>
    </body>
</html>

运行结果