Answers for "how to change data-attribute value using jquery"

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

set custom data attribute jquery

//set the custom data value
let mainDiv = $('#yourDivId').data('anyName', value);
//access the custom data value
mainDiv.data('anyName');