HTML5本地缓存数据

//HTML5本地缓存数据

function putObj(key, data) {
if (!!window.localStorage) {
var obj = { "key": key, "data": data};
window.localStorage.setItem(key, JSON.stringify(obj));
}
}
function getObj(key)
{
var data = "";
if (localStorage.getItem(key) != null) {
data =eval(JSON.parse(localStorage.getItem(key)).data);
}
return data;
}