Delete element in array from Local storage via input value

Question

I have an array saved in localstorage and trying to delete an element onclick based on input value. I have the code below but I cant make it work. Please help, Thanks in advance :)

var datarray = [];

function deldata() {

  // retrieve stored data (JSON stringified) and convert
  var storedData = localStorage.getItem("list_data_key");
  if (storedData) {
    datarray = JSON.parse(storedData);
  }


var titleValue = document.getElementById('listxt').value;
// Find and remove item from an array
var i = array.indexOf(titleValue);
if(i != -1) {
    array.splice(i, 1);
}
localStorage.setItem("list_data_key", JSON.stringify(datarray));
  datapost();
}

jsfiddle

you're not using function deldata...? And you're using JSON.stringify(datarray) but changing data. Please rethink your question and try again — Joshua K
– Joshua K, Commented Sep 22, 2017 at 17:33

Alan Larimer · Accepted Answer · 2017-09-22 17:39:47Z

1

Watch your variable names.

function deldata() {
  // retrieve stored data (JSON stringified) and convert
  var storedData = localStorage.getItem("list_data_key");
  if (storedData) {
    datarray = JSON.parse(storedData);
  }

  var titleValue = document.getElementById('listxt').value;
  // Find and remove item from an array
  var i = datarray.indexOf(titleValue);  //  HERE  (was 'array')
  if(i != -1) {
    datarray.splice(i, 1);  //  HERE  (was 'array')
  }
  localStorage.setItem("list_data_key", JSON.stringify(datarray));
  datapost();
}

answered Sep 22, 2017 at 17:39

Alan Larimer

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Comments

Thusitha · Accepted Answer · 2017-09-22 17:37:32Z

0

Change

var i = array.indexOf(titleValue);
if(i > -1) {
    array.splice(i, 1);
}

to

var i = datarray.indexOf(titleValue);
if(i > -1) {
    datarray.splice(i, 1);
}

answered Sep 22, 2017 at 17:37

Thusitha

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