代码

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<meta http-equiv="X-UA-Compatible" content="IE=edge">

<title>timeout</title>

<link rel="stylesheet" href="">

</head>

<body>

<script type="text/javascript" charset="utf-8" >

function set(key,v){

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

localStorage.setItem(key,JSON.stringify({data:v,time:curTime}));

}



function get(key,exp){

var data = localStorage.getItem(key);

var dataObj = JSON.parse(data);

if (new Date().getTime() - dataObj.time > exp) {

console.log('expires');

}else{

console.log('data = '+dataObj.data);

}

}

</script>

</body>

</html>

调用