<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>localStorage.</title>
<script type="text/javascript">
// About the localStorage expiration time setting
var obj = new Object();
obj.a = a;
obj.time = 3600;
obj.date = new Date().getTime();
// Store to localStorage.
localStorage.setItem('data', JSON.stringify(obj));
// get value
var b = JSON.parse(localStorage.getItem('data'));
var them = b.time;
var data = b.date;
if ((parseInt(time) + parseInt(data)) < new Date().getTime()) {
// If it is less than that, it means that the data aging has expired and can be cleared. …
localStorage.remove('data');
} else {
// If it is larger than the description data, it is still valid
console.log(b.a);
}
</script>
</head>
<body>
</body>
</html>