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                <label for="chooseFruit">Choose Your Favourite Fruit</label>
<br />
<input type="radio" name="chooseFruit" value="mango"> Mango </input>
<input type="radio" name="chooseFruit" value="kiwi"> Kiwi </input>
<input type="radio" name="chooseFruit" value="banana"> Banana </input>
<input type="radio" name="chooseFruit" value="orange"> Orange </input>

<br />
<h2> <a href="" target="_blank">Written by </a>




                $(document).ready(function() {
  $("input[type=radio]").click(function() {
    // Get the storedValue
    var previousValue = $(this).data('storedValue');
    // if previousValue = true then
    //     Step 1: toggle radio button check mark.
    //     Step 2: save data-StoredValue as false to indicate radio button is unchecked.
    if (previousValue) {
      $(this).prop('checked', !previousValue);
      $(this).data('storedValue', !previousValue);
    // If previousValue is other than true
    //    Step 1: save data-StoredValue as true to for currently checked radio button.
    //    Step 2: save data-StoredValue as false for all non-checked radio buttons. 
      $(this).data('storedValue', true);
      $("input[type=radio]:not(:checked)").data("storedValue", false);