HTML代码：
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>列车时刻表查询</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 src="js/connect.js"></script>
<body onload="init()">
<div data-role="page" id="pageone">
<div data-role="header" data-position="fixed">
<h1>列车时刻表查询</h1>
</div>
<div data-role="main" class="ui-content">
<p align="center">请给我留言</p>
<table data-role="table" class="ui-responsive">
<thead>
<tr>
<th>姓名：</th>
<th>留言：</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()">留言</button>
<table data-role="table" data-mode="" class="ui-responsive" id="datatable">
<!--这里是留言板的显示区域-->
</table>
</div>
<!--
作者：ceet@vip.qq.com
时间：2017-08-26
描述：底部TAB
-->
<div data-role="footer" data-position="fixed">
<div data-role="navbar">
<ul>
<li>
<a href="index.html#index" data-icon="grid" class="ui-btn-active">查询</a>
</li>
<li>
<a href="index.html#detail" data-rel="popup" data-icon="star">收藏</a>
</li>
<li>
<a href="test.html" data-icon="comment">给我留言</a>
</li>
</ul>
</div>
</div>
<!--收藏功能-->
<div data-role="popup" id="myPopup" class="ui-content" data-theme="b">
<a href="#" data-rel="back" class="ui-btn ui-btn-a ui-corner-all ui-shadow ui-btn ui-icon-delete ui-btn-icon-notext ui-btn-right">Close</a>
<p>收藏成功，暂且不做处理!.</p>
<p>请点击右上角有个关闭按钮</p>
<p><b>提示：</b> 你也可以点击弹窗的外部区域来关闭弹窗。</p>
</div>
</div>
</body>
</html>
JS代码：
/**
* HTML5 操作本地WebSQL数据库
* 作者：汪政
* 时间：2017/08/26 15：03：19
*/
var datatable = null;
var db = openDatabase("MyData", "", "My Database", 1024 * 100);
//初始化函数方法
function init() {
datatable = document.getElementById("datatable");
showAllData();
}
//首先移除乱七八糟的东西
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 = "姓名";
th2.innerHTML = "留言";
th3.innerHTML = "时间";
tr.appendChild(th1);
tr.appendChild(th2);
tr.appendChild(th3);
datatable.appendChild(tr);
}
//显示WebSQL中的数据
function showData(row) {
var tr = document.createElement("tr");
var td1 = document.createElement("td");
td1.innerHTML = row.name;
var td2 = document.createElement("td");
td2.innerHTML = row.message;
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 MsgData(name TEXT,message TEXT,time INTEGER)", []);
tx.executeSql("SELECT * FROM MsgData", [], function(tx, rs) {
removeAllData();
for(var i = 0; i < rs.rows.length; i++) {
showData(rs.rows.item(i))
}
})
})
}
//添加数据
function addData(name, message, time) {
db.transaction(function(tx) {
tx.executeSql("INSERT INTO MsgData VALUES (?,?,?)", [name, message, time], function(tx, rs) {
alert("留言成功！");
},
function(tx, error) {
alert(error.source + "::" + error.message);
}
)
})
}
//调用
function saveData() {
var name = document.getElementById("name").value;
var memo = document.getElementById("memo").value;
var time = new Date().getTime();
addData(name, memo, time);
showAllData();
}