local stroage

<!doctype html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
<title>local storage example</title>
</head>
<body>
<form>
<input type="text" name="search" id="search">
</form>
<script>
var ls;
var storage;
if(typeof(Storage) !== "undefined") {
    ls = true;
    storage = window.localStorage;
} else {
    ls = false;
    storage = null;
}

$(function(){
    $("#search").keyup(function() {
        if(ls){
            storage.setItem("searchText", $(this).val());
        }
    });
});
window.onload = function(){
    if(ls){
        var searchText = storage.getItem("searchText");
        $("#search").val(searchText);
    }
}
</script>

</body>
</html>