<!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>
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