Ok, so I have this JSON:
{"Status":"OK!","ListaPermessi":
[{"IdPermesso":10,"Nome":"WIND_PARAMS"},
{"IdPermesso":11,"Nome":"ADMIN_SERVER"},
{"IdPermesso":21,"Nome":"REC"},
{"IdPermesso":22,"Nome":"REC_DIST"},
{"IdPermesso":23,"Nome":"REC_DIST_CR"}
]}
My code is:
var parsedResult = JSON.parse(result); // where result is the above JSON
if (parsedResult.Status === "OK!") {
// Set sessionStorage vars
if (typeof(Storage) !== "undefined") {
// localStorage & sessionStorage support!
sessionStorage.setItem("ListaPermessi", parsedResult.ListaPermessi);
}
else {
// Sorry! No web storage support :(
}
}
But... this is not working properly! After the assignment, the sessionStorage seen from Firebug looks like this:
sessionStorage:
What is the proper way to assign an array of objects to a sessionStorage variable from javascript?
You need to turn it back into a JSON string. You can do that with the JSON.stringify
method:
sessionStorage.setItem("ListaPermessi", JSON.stringify(parsedResult.ListaPermessi));
The reason for this is that web storage can only store strings, and the default toString
method of Object
returns, as you've now seen, "[object Object]".
Side note: typeof
is an operator, not a function, so there's no need for the parentheses:
if (typeof Storage !== "undefined") { //...