How to remove ıtem on localStorage?-CodePudding

I want to removeItem on localstorage but ı dont use localstorage.removeItem().Because ı want to delete a index in array(Sepet=array) How can ı do it ? thx

CodePudding user response：

var array = [
{
'id': 1,
'name':'test1'
},
{
'id': 2,
'name':'test2'
},
{
'id': 3,
'name':'test3'
}
];

console.log(array);
localStorage.setItem('test', JSON.stringify(array));
var selected = 1;
 var getArray = JSON.parse(localStorage.getItem('test'))
getArray.splice(selected,1);
localStorage.setItem('test', JSON.stringify(getArray));
console.log(getArray);

CodePudding user response：

To get object from localStorage you need the Helper: localStorage.getItem('objectName');. You will get a string and not a object. To transform this string to a Object you need the function JSON.parse(string). And on this point you can work with the object. If you will delete item by index then remove it with object[index]and if you will remove item by value key like id: 2 then use JS Object function function like spliceto remove this item.

After that you have to stringify the object again to a string with JSON.stringify(object). This string you can store in the lcoalStorage withe the methode: localStorage.set(string)

That is the entire workflow.

CodePudding user response：

localStorage is meant to store String values, so if you want to remove an item at a particular index, bear in mind that you need to convert the stringyfied array into plain JS array, then remove the item with array.slice(), and save the updated array back to localStorage.

You can checkh the Array.slice() documentation