<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script>
function saveStorage(){
var data=new Object;
data.name=document.getElementById('name').value;
data.email=document.getElementById('email').value;
data.phone=document.getElementById('phone').value;
data.memo=document.getElementById('memo').value;
//----转换json格式
var str=JSON.stringify(data);
alert(str);
localStorage.setItem(data.name,str);
alert('数据已经保存');
}
//查找web存储的数据
function findStorage(id){
var find=document.getElementById('find').value;
var str=localStorage.getItem(find);
var data=JSON.parse(str);
var result="姓名："+data.name+'<br/>';
result+="邮箱:"+data.email+'<br/>';
result+="电话："+data.phone+'<br/>';
result+="备注"+data.memo+'<br/>';
var target=document.getElementById(id);
target.innerHTML=result;
}
</script>
</head>
<body>
<!--html代码-->
<h1>使用Web Storage模拟数据库</h1>
<table>
<tr><td>姓名</td><td><input type="text" id="name"></td></tr>
<tr><td>邮箱</td><td><input type="email" id="email"></td></tr>
<tr><td>电话</td><td><input type="text" id="phone"></td></tr>
<tr><td>备注</td><td><input type="text" id="memo"></td></tr>
<tr>
<td></td>
<td><input type="button" value="保存" οnclick="saveStorage();"></td>
</tr>
</table>
<hr />
<p>检索:<input type="text" id="find"></p>
<input type="button" value="检索" οnclick="findStorage('msg');"/>
</p>
<p id="msg"></p>
</body>
</html>
json格式的双向转换
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Web留言本</title>
<script>
function saveStorage(id){
var data=document.getElementById(id).value;
var time=new Date().getTime();
localStorage.setItem(time,data);
alert('数据已保存');
loadStorage('msg');
}
function loadStorage(id){
var result='<table border="1">';
for(var i=0;i<localStorage.length;i++){
var key=localStorage.key(i);
var value=localStorage.getItem(key);
var date=new Date();
date.setTime(key);
var datastr=date.toGMTString();
result+='<tr><td>'+value+'</td><td>'+datastr+'</td></tr>';
}
result+='</table>';
var target=document.getElementById(id);
target.innerHTML=result;
}
function clearStorage(){
localStorage.clear();
alert('全部数据被清除。');
loadStorage('msg');
}
</script>
</head>
<body>
<h1>Web留言本</h1>
<textarea id="memo" cols="60" rows="10"></textarea><br />
<input type="button" value="追加" οnclick="saveStorage('memo');" />
<input type="button" value="初始化" οnclick="clearStorage('msg');" />
<hr />
<p id="msg"></p>
</body>
</html>WEB SQL的存储