how to get value of html form element using custom data attribute in jquery code example

Example 1: jquery set data attribute value

//<div id="myElementID" data-myvalue="37"></div>
var a = $('#myElementID').data('myvalue'); //get myvalue
$('#myElementID').data('myvalue',38); //set myvalue

Example 2: jquery get data attribute

<a data-id="123">link</a>


var id = $(this).data("id"); // Will set id to 123