web storage 简单的网页留言版

html

<!DOCTYPE html>

<html>

	<head>

		<meta charset="utf-8" />

		<title>简单的网页留言版</title>

		<script type="text/javascript" src="js/test6.js" ></script>

	</head>

	<body>

		<h1>简单的网页留言版</h1>

		<textarea id="demo" cols="60" rows="10"></textarea>

		<br>

		<input type="button"  value="保存" onclick="saveStorage('demo');">

		<input type="button"  value="清除" onclick="clearStorage('msg');">

		<input type="button"  value="读取" onclick="loadStorage('msg');">

		<hr>

		<p id="msg"></p>

	</body>

</html>

function saveStorage(id) {

	var data=document.getElementById(id).value;

	var time=new Date().getTime();

	localStorage.setItem(time,data);

	alert("数据保存成功");

}

function loadStorage(id){

    var result = '<table border="1">';

    for(var i = 0;i < localStorage.length;i++){ //localStorage.length所有保存在localStorage中的数据条数

        var key = localStorage.key(i); //得到localStorage中与相应索引号对应的数据

        var value = localStorage.getItem(key);

        var date = new Date();

        date.setTime(key);

        var datestr = date.toGMTString();

        result += '<tr><td>' + value + '</td><td>' + datestr + '</td></tr>';

    }

    result += '</table>';

    var target = document.getElementById(id);

    target.innerHTML = result;

}

//将localStorage中保存的数据全部清除

function clearStorage(id){

    localStorage.clear();

    alert("全部数据被清除");

    loadStorage('msg');

}

　　效果：

巴特西

web storage 简单的网页留言版

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