CODEWITHSUNDEEP
jquerylocal-storage
Er.KT
Er.KT

Reputation: 2860

Clear localstorage for a specific key

I have stored some information in localstorage and the data storing like :

localStorage : 
MessageCount : "[{"id":"user_abc-com","MsgCount":8},{"id":"user2_abc-com","MsgCount":16}]"

enter image description here

Now here I want to make MsgCount = 0 from 8 for a specific id : user_abc-com

So how to do that ?

Upvotes: 0

Views: 66

Answers (2)

Justinas
Justinas

Reputation: 43557

Simply update your element with new value:

var messages = [
  {"id": "user_abc-com", "MsgCount": 8},
  {"id": "user2_abc-com", "MsgCount": 16}
];

localStorage.setItem('MessageCount', JSON.stringify(messages));

// ----------- //

var messages = JSON.parse(localStorage.getItem('MessageCount'));
messages[0]['MsgCount'] = 0;
localStorage.setItem('MessageCount', JSON.stringify(messages));

// ----------- //

console.log(localStorage.getItem('MessageCount'));

Upvotes: 0

Christof
Christof

Reputation: 2734

s is your localStorage, jsfiddle

var s = "[{\"id\":\"user_abc-com\",\"MsgCount\":8},{\"id\":\"user2_abc-com\",\"MsgCount\":16}]";
var s_obj = JSON.parse(s); // parsing it from string to object

s_obj.forEach(function(v, k) { // iterate through array
    if(v.id == 'user_abc-com') s_obj[k].MsgCount = 0 // change value
});

s = JSON.stringify(s_obj); // switching to string again (ready to save in localStorage)

Upvotes: 1

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