<!DOCTYPE html>
<html
xmlns="http://www.w3.org/1999/xhtml"><head>
< meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
< title></title>
< style type="text/
css">
textarea {
width: 300px;
height: 300px;
}
.button {
width: 100px;
}
< /style>
</head>
<body>
< script type="text/javascript">
//使用HTML5 Web存储的localStorage和sessionStorage方式进行Web页面数据本地存储。
//页面参考如下图，能将页面上的数据进行本地存储。并能读取存储的数据显示在页面上。
function saveSession() {
var t1 = document.getElementById("t1");var t2 = document.getElementById("t2");var mydata = t2.value;
var oStorage = window.sessionStorage;
oStorage.mydata = mydata;
t1.value += "sessionStorage保存mydata:" + mydata + "\n";
}
function readSession() {
var t1 = document.getElementById("t1");var oStorage = window.sessionStorage;
var mydata = "不存在";
if (oStorage.mydata) {
mydata = oStorage.mydata;
}
t1.value += "sessionStorage读取mydata:" + mydata + "\n";
}
function cleanSession() {
var t1 = document.getElementById("t1");var oStorage = window.sessionStorage;
var mydata = "不存在";
if (oStorage.mydata) {
mydata = oStorage.mydata;
}
oStorage.removeItem("mydata");t1.value += "sessionStorage清除mydata:" + mydata + "\n";
}
function saveStorage() {
var t1 = document.getElementById("t1");var t2 = document.getElementById("t2");var mydata = t2.value;
var oStorage = window.localStorage;
oStorage.mydata = mydata;
t1.value += "localStorage保存mydata:" + mydata + "\n";
}
function readStorage() {
var t1 = document.getElementById("t1");var oStorage = window.localStorage;
var mydata = "不存在";
if (oStorage.mydata) {
mydata = oStorage.mydata;
}
t1.value += "localStorage读取mydata:" + mydata + "\n";
}
function cleanStorage() {
var t1 = document.getElementById("t1");var oStorage = window.localStorage;
var mydata = "不存在";
if (oStorage.mydata) {
mydata = oStorage.mydata;
}
oStorage.removeItem("mydata");t1.value += "localStorage清除mydata:" + mydata + "\n";
}
< /script>
< div>
< textarea id="t1"></textarea>
< label>需要保存的数据:< /label>
< input type="text" id="t2" />
< input type="button" class="button" onclick="saveSession()" name="b1" value="session保存" />
< input type="button" class="button" onclick="readSession()" value="session读取" />
< input type="button" class="button" onclick="cleanSession()" value="session清除" />
< input type="button" class="button" onclick="saveStorage()" value="local保存" />
< input type="button" class="button" onclick="readStorage()" value="local读取" />
< input type="button" class="button" onclick="cleanStorage()" value="local清除" />
< /div>
</body>
</html>
。