Script for pre-init
/*
WT.Storage
A simple utility that allows users to write to storage, with local/sessionstorage preferred, but falling back to cookies, without having to worry about detection on every use.
*/
WT.Storage = {
hasLS: (function(){ try { var a = 'a'; localStorage.setItem(a, a); localStorage.removeItem(a); return true; } catch(e) { return false; } })(),
hasSS: (function(){ try { var a = 'a'; sessionStorage.setItem(a, a); sessionStorage.removeItem(a); return true; } catch(e) { return false; } })(),
set: function(name, value, expiry){
if(!expiry){
if(WT.Storage.hasSS){
sessionStorage.setItem(name, value);
} else {
WT.helpers.cookie.set(name, value);
}
} else {
if(WT.Storage.hasLS){
localStorage.setItem(name, value);
} else {
WT.helpers.cookie.set(name, value, exipry);
}
}
},
get: function(name){
return (WT.Storage.hasLS && localStorage.getItem(name) || WT.Storage.hasSS && sessionStorage.getItem(name) || WT.helpers.cookie.get(name))
}
};
WT.Storage.set
This method allows you to push data into storage. We make this selection based on whether local/sessionstorage is available, and what input you provide.
If they are available, we avoid cookies. If not, we leverage cookies.
Examples of WT.Storage.set
WT.Storage.set(name, value, 1)- if you provide a 3rd argument, we will use either localStorage (if available) or a cookie with that expiry.WT.Storage.set(name, value)- if you do not provide a 3rd argument, we will use either sessionStorage (if available) or a session cookie.
WT.Storage.get
This is a simpler method - we will check all of localStorage, sessionStorage and cookies for your name. The first place it is found, we return the value. Whilst taking away control, the abstraction provides simplicity.
Examples of WT.Storage.get
WT.Storage.get(name)