Resetting all my stored values to an array using getItem (javascript)

Question

I'm trying to reset my values after having left a this program. Initially the variables were set before departing using setItem. I can read each variable and reset it by using

vartbl[a1,a2,a3,a4,a5.....a50]
itm = localStorage.getItem("a1");
 a1 = JSON.parse(itm);
itm = localStorage.getItem("a2");
 a2 = JSON.parse(itm);**

What I would like is loop to handle this such as

for ( a = 0; a < vartbl.length; a++ ) {
   vartbl[a] = JSON.parse(localStorage.getItem(vartbl[a]))
}

Presently all this does is just put the value vartblp[a] into the indexed position thereby renaming the variable in the array. How can this be done correctly?

Thanks

What's the expected result? Do you want to put the data from localStorage to the `a1`, `a2`, etc variables instead of putting the data into the `vartbl` array? — Finesse, Jul 07 '21 at 03:03
duplicate of https://stackoverflow.com/questions/17745292/how-to-retrieve-all-localstorage-items-without-knowing-the-keys-in-advance — Ofek, Jul 07 '21 at 03:12
Does this answer your question? [How to retrieve all localStorage items without knowing the keys in advance?](https://stackoverflow.com/questions/17745292/how-to-retrieve-all-localstorage-items-without-knowing-the-keys-in-advance) — Ofek, Jul 07 '21 at 03:12
what you want to do after retrieving the value from local storage?, looks like here you are just replacing it. — Rahul R., Jul 08 '21 at 13:07
Okay as it turns out i wasn't concise in my description. It turns out the after i reworded my question (while speaking to myself) I was able to find the result I required by looking at question stackoverflow.com/questions/68279475/resetting-all-my-stored-values-to-an-array-using-getitem-javascript This explained why my result wasn't what I had expected. — dwt, Jul 09 '21 at 15:32

score 0 · Answer 1 · answered Jul 07 '21 at 03:17

A loop to fetch the content of localStorage into a variable:

// get all localStorage object keys into an array
var keys = Object.keys(localStorage);
var vartbl = {}

// fill vartbl with the value of localStorage
for (var i in keys) {
    try {
        vartbl[keys[i]] = JSON.parse(localStorage.getItem(keys[i]));
    } catch (e) {
        console.warn(`error parsing ${keys[i]}. Probably not a valid JSON string`,e);
    }
}

Resetting all my stored values to an array using getItem (javascript)

1 Answers1