Removing an article from a Vue.js localStorage array using its index position

Question

Removing an article from a Vue.js localStorage array using its index position

I am facing an issue while trying to remove an item from localStorage. I have created a table to store all the added items, and I would like to delete a specific article either by its index or ideally by its unique id. Your assistance is greatly appreciated. Thank you in advance.

deleteOption(){
      this.test = JSON.parse(localStorage.getItem('test'))
      this.test.splice(index, 1)
},

test:[
   {
    id:1,
    item: test item 1
   },
   {
    id:2,
    item: test item 2
   },
   {
    id:3,
    item: test item 3
   },   
]


addItem () {

localStorage.setItem("test",JSON.stringify(this.test))

}

javascript vue.js local-storage

Answer 1

Answer №1

When using the getItem method in localstorage, it is important to remember that the returned value is a string and should be converted to an array before performing any operations:

  let data = JSON.parse(localStorage.getItem('data'));
  data.pop();

Answer 2

When using the getItem method in localstorage, it is important to remember that the returned value is a string and should be converted to an array before performing any operations:

  let data = JSON.parse(localStorage.getItem('data'));
  data.pop();

Answer 3

Answer №2

To address your situation, you should follow these steps:

Retrieve the previously saved string from local storage
Parse the string into an array
Make necessary modifications to the array
Convert the array back into a string
Save the updated string back to local storage.


test:[
   {
    id:1,
    item: test item 1
   },
   {
    id:2,
    item: test item 2
   },
   {
    id:3,
    item: test item 3
   },   
]

localStorage.setItem("test",JSON.stringify(this.test))


function deleteByIndex(index)
{
  var arr = JSON.parse(localStorage.getItem('test'));
  arr = arr.splice(index, 1);
  localStorage.setItem("test",JSON.stringify(arr))
}

function deleteById(id)
{
  var arr = JSON.parse(localStorage.getItem('test'));
  arr = arr.filter(function(item) {
    return item.id !== id
   });
  localStorage.setItem("test",JSON.stringify(arr))
}

Answer 4

To address your situation, you should follow these steps:

Retrieve the previously saved string from local storage
Parse the string into an array
Make necessary modifications to the array
Convert the array back into a string
Save the updated string back to local storage.


test:[
   {
    id:1,
    item: test item 1
   },
   {
    id:2,
    item: test item 2
   },
   {
    id:3,
    item: test item 3
   },   
]

localStorage.setItem("test",JSON.stringify(this.test))


function deleteByIndex(index)
{
  var arr = JSON.parse(localStorage.getItem('test'));
  arr = arr.splice(index, 1);
  localStorage.setItem("test",JSON.stringify(arr))
}

function deleteById(id)
{
  var arr = JSON.parse(localStorage.getItem('test'));
  arr = arr.filter(function(item) {
    return item.id !== id
   });
  localStorage.setItem("test",JSON.stringify(arr))
}

Answer 5

Answer №3

example = [
  {
    id: 1,
    item: "example item 1",
  },
  {
    id: 2,
    item: "example item 2",
  },
  {
    id: 3,
    item: "example item 3",
  },
];

newExample = example.filter((item) => item.id !== 2);

console.log(newExample);

This code snippet removes the item with id 2 from the array.

Answer 6

example = [
  {
    id: 1,
    item: "example item 1",
  },
  {
    id: 2,
    item: "example item 2",
  },
  {
    id: 3,
    item: "example item 3",
  },
];

newExample = example.filter((item) => item.id !== 2);

console.log(newExample);

This code snippet removes the item with id 2 from the array.

Answer 7

Answer №4

Could someone provide assistance as I am having difficulty retrieving the index of an object within an array stored in localStorage?

Answer 8

Could someone provide assistance as I am having difficulty retrieving the index of an object within an array stored in localStorage?

Answer 9

Answer №5

After multiple days of attempting, I am still unable to accomplish my goal. Despite following all the suggestions provided in this thread, one particular method ends up erasing all of my progress. It seems that whenever I try to add an option, all the options I had previously removed reappear.

Answer 10

After multiple days of attempting, I am still unable to accomplish my goal. Despite following all the suggestions provided in this thread, one particular method ends up erasing all of my progress. It seems that whenever I try to add an option, all the options I had previously removed reappear.

Removing an article from a Vue.js localStorage array using its index position

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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