html - jquery .data() is not attaching data to element -


i when user clicks on "2" button (code below) data attribute of clicked = true should appear on button. when user clicks on "3" button "2" button clicked data should removed , 3 button data attribute should clicked = true. right looks cant simple thing placing data on element , interact it

html:

<body>     <button class = "two">2</button>     <button class="three">3</button> </body>

script: 

 $(document).ready( function(){           //when user clicks on button button should show signs of data attr             $('.two').on('click',function(e){                 $(this).data('clicked', true);                 //alert('sup')             })             if($('.two').data('clicked')){                 alert('received data')             }   });

i tried following this chosen answer toggle data attr figure out element clicked perform operations later in code

i think trying store clicked button retrieve later.

in such case better use class based solution like

$(document).ready(function() {    //when user clicks on button button should show signs of data attr    var $clicks = $('.clicks').on('click', function(e) {      $(this).addclass('clicked');      $clicks.not(this).removeclass('clicked');    });      $('#test').click(function() {      alert($('.clicks.clicked').text())    })  });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <button class="two clicks">2</button>  <button class="three clicks">3</button>  <br />  <button id="test">test</button>

if want continue sing data-clicked attribute, need use .attr() not .data() .data() not update attribute value

$(document).ready(function() {    //when user clicks on button button should show signs of data attr    var $clicks = $('.clicks').on('click', function(e) {      $(this).attr('data-clicked', 'true');      $clicks.not(this).removeattr('data-clicked');    });      $('#test').click(function() {      alert($('.clicks[data-clicked]').text())    })  });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <button class="two clicks">2</button>  <button class="three clicks">3</button>  <br />  <button id="test">test</button>


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