Hi i got the following app
when i click addline it adds a new row in localstorage and shows in table. I tried to create a js so when user click Delete button in a row, it should delete from localstorage only that record with this:
let items = {{localStorage.values.dataLocalStorage}} ?? [];
return items.filter(item => item.id !== table4.selectedRow.data.id);
but is not working 
record doesnt get remove, what im doing wrong
thank you
It looks like you are loading the localStorage into items and then your function returns a filtered version of items (returns it to where?). But you are not changing localStorage in any way.
You need to do something like localStorage.setValue(items.filter(item => item.id !== table4.selectedRow.data.id);
Instead of filter how I can remove item?
localStorage.setValue() actually takes two parameters, the key and the value.
https://docs.retool.com/docs/javascript-api-reference#local-storage-methods
I tried this out myself and this works:
//jsAdditem query
let items = localStorage.values.tableData ?? [];
localStorage.setValue("tableData", [...items, {id: Math.floor(Math.random() * 10000), name: "Brad", bornState: "CA"}])
// jsRemoveItem query
let items = localStorage.values.tableData ?? [];
localStorage.setValue("tableData", items.filter(item => item.id !== table2.selectedRow.data.id))
Will try that, so I don't need to use set localstorage from click event when I press button add line