Storing checkbox value in local storage

Question

I have a checkbox whose value $row[\'uid\'] I would like to store in local storage using javascript or jquery. When the user \"unchecks\" the checkbox, the valu

Answer 1

Here's an example to get you headed in the right direction:

var boxes, arr;

// This function loads the array and then checks the uid of each checkbox
// against it.

function checkBoxes() {
  arr = loadBoxArray();
  $.each($('input[type=checkbox]'), function (i, el) {
    if (arr.indexOf(i) > -1) {
      $(this).prop('checked', true);
    } else {
      $(this).prop('checked', false);
    }
  });
}

// If the localStorage item is available, load it into an array
// otherwise set a default array and save it to localStorage

function loadBoxArray() {
  if (localStorage.getItem('boxes')) {
    arr = loadBoxArray();
  } else {
    arr = [0, 2];
    saveBoxArray(arr);
  }
}

// Save the array to localStorage    

function saveBoxArray(arr) {
  localStorage.setItem('boxes', JSON.stringify(arr));
}

// On page load check the boxes found in localStorage

checkBoxes();

// Clicking a checkbox will update the checkbox array which is then saved to localStorage

$('input[type=checkbox]').click(function () {
  var arr = $.map($('input[type=checkbox]:checked'), function (el) {
    return $(el).data('uid');
  });
  saveBoxArray(arr);
});