Answers for "jquery get element has data attribute without value"

jquery get data attribute value

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

/* js */
$(this).attr("data-id") // returns string "123"

$(this).data("id") // returns number 123 (jQuery >= 1.4.3 only)

get attribute value jquery

var some_var = $( some_jquery_selector ).attr( 'some_attribute_name' );