jquery - Can't parse JSON to Javascript object -

i have html box:

<span>select depatament</span><span>     <select id="department" onchange="enableslaveselectbox(this)" data-slaveelaments='{"a": 1, "b": "2"}'>        <option selected disabled>-select-</option>     </select> </span> 

event onchange() implementation:

function enableslaveselectbox(element) {     var d = $('#department').data('slaveelaments');     alert($.parsejson(d)); } 

but when onchange() event fired on row:

alert($.parsejson(d)); 

this error:

syntaxerror: json.parse: unexpected character @ line 1 column 2 of json data return json.parse( data + "" );

any idea why error above? thank in advance.

in case don't need use parsejson, because d object,

function enableslaveselectbox(element) {     var d = $('#department').data('slaveelaments');      console.log(d.a);     console.log(d.b); } 

example

when data attribute object (starts '{') or array (starts '[') jquery.parsejson used parse string; must follow valid json syntax including quoted property names. if value isn't parseable javascript value, left string.

$.data