I have requirement like that, when I send request, CSRF-token should be send with it. I Explore some SO questions, But I can't find Solution.

I have written Code like bellow to add token when request being sent,

 var send = XMLHttpRequest.prototype.send,

        token = $('meta[name=csrf-token]').attr('content');

    XMLHttpRequest.prototype.send = function(data) {

        this.setRequestHeader('X-CSRF-Token', xyz12345);

        //this.setRequestHeader('X-CSRF-Token',getCSRFTokenValue());

        return send.apply(this, arguments);

    }

This is Working Fine, But now i need to add CSRF-Token in function in place of xyz12345.

I have tried ajax function as below .
`

$.ajax({

            type: POST,

            url: /test/

            //data: { CSRF: getCSRFTokenValue()}

        }).done(function (data) {

        var csrfToken = jqXHR.getResponseHeader('X-CSRF-TOKEN');

        if (csrfToken) {

            var cookie = JSON.parse($.cookie('helloween'));

            cookie.csrf = csrfToken;

            $.cookie('helloween', JSON.stringify(cookie));

        }



        $('#helloweenMessage').html(data.message);



    });

But it is not Yet Worked.
So my question is:
How to get js side CSRF-Token Value?