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H5操作WebSQL数据库,h5websql数据库

H5操作WebSQL数据库,h5websql数据库HTML代码: <!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8...

H5操作WebSQL数据库,h5websql数据库

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();
}

  

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