DionysoSong DionysoSong - 1 year ago 142
Javascript Question

LocalStorage - Remove item by value and not key?

Ok so I have a JSON like this stocked in LocalStorage :


I searched how I can remove one item and I only find this :


But, correct me if I am wrong, if I use this will remove all the value with keyName "pseudo" if I do storage.removeItem(pseudo);

How can I only remove
from the json and keep

Thank you.

UPDATE something like this ?

var ami_json = window.localStorage.getItem("info");
var amiNotifies = JSON.parse(ami_json);

var getIndexOf = function (psdu) {
for (var i = 0; i < amiNotifies.length; i++) {
if (amiNotifies[i].pseudo === psdu) {
return i;

return -1;

if (amiNotifies.length > 0) {
var index = getIndexOf(pseudo);
if (index > -1) {
//so already exists. now remove it.
var storedName = JSON.parse(localStorage.getItem(pseudo));

var indexToRemove = index;

//remove item selected, second parameter is the number of items to delete
amiNotifies.slice(indexToRemove, 1);

// Put the object into storage
localStorage.setItem('pseudo', JSON.stringify(amiNotifies));

Array.prototype.splice.call(amiNotifies, index, 1);
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Answer Source

localstorage only supports string values, so you need to parse data.

    var storedNames = JSON.parse(localStorage.getItem("keyName"));

    // here you need to make a loop to find the index of item to delete
    var indexToRemove = 1;

    //remove item selected, second parameter is the number of items to delete 
    storedNames.slice(indexToRemove, 1);

   // Put the object into storage
   localStorage.setItem('keyName', JSON.stringify(storedNames));
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