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How do you log out with java script

This is the code I have along with the errors I get with both vue router and regular ajax:


doRequest: function (url, method, successCb, errorCb, params, conf) {

    var pms = [];

    if (typeof params === 'object') pms = params;

        function callback(body) {

            console.log(body);

            return [];

        }

        var httpCong = {

            url: url,

            method: method,

            crossDomain: true,

            data: params

        };


        if (pms !== null && typeof pms === 'object') {

            if (Object.keys(pms).length > 0) {

            httpCong['processData'] = true;

        }

    }

    if (typeof conf === 'object') {

        if (typeof conf.dataType !== 'undefined') {

            httpCong['dataType'] = conf.dataType;

        }

    }


    var request = $.ajax(httpCong);

    request.done(function(body) {

    self.doingAction = false;


    var out = {body: body};


    if (!body) out['data'] = [];

    else out['data'] = JSON.parse(body);


    if (successCb) successCb(out);

       self.doingAction = false;

   });


    request.fail(function(body) {

        var out = {body: body};

        out['data'] = JSON.parse(body);

        if (errorCb) errorCb(out);

        self.doingAction = false;

    });



this.$http.delete('https://ip/dev-test/qps/user?QlikTicket=' + this.qlikTicket, {

       headers: {

           'Access-Control-Allow-Origin': 'http://13.81.124.229'

       }

  })

  .then(function (response) {

       console.log('response: ', response);

    },

    function (error) {

       console.log('ERROR: ');

       console.log(error);

    }

)

this.doRequest('https://ip/qps/dev-test/session/' + this.qlikTicket, 'delete',

//this.doRequest('https://ip/dev-test/qps/user', 'delete',

    function (res) {

        console.log('response: ', res);

    },

    function (error) {

        console.log('ERROR: ');

        console.log(error);

    },

    null,

    {

    //dataType: "jsonp"

    })

;

Errors:

XMLHttpRequest cannot load https://ip/qps/dev-test/session/_Bszur-jQsCMNSzj. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8000' is therefore not allowed access.

VM40803:1 Uncaught SyntaxError: Unexpected token o in JSON at position 1

    at JSON.parse (<anonymous>)

    at Object.<anonymous> ((index):961)

    at j (require.js?QlikTicket=_Bszur-jQsCMNSzj:12)

    at Object.fireWith [as rejectWith] (require.js?QlikTicket=_Bszur-jQsCMNSzj:12)

    at d (require.js?QlikTicket=_Bszur-jQsCMNSzj:13)

    at XMLHttpRequest.<anonymous> (require.js?QlikTicket=_Bszur-jQsCMNSzj:13)

(anonymous) @ (index):961

j @ require.js?QlikTicket=_Bszur-jQsCMNSzj:12

fireWith @ require.js?QlikTicket=_Bszur-jQsCMNSzj:12

d @ require.js?QlikTicket=_Bszur-jQsCMNSzj:13

(anonymous) @ require.js?QlikTicket=_Bszur-jQsCMNSzj:13

ip/dev-test/qps/user?QlikTicket=_Bszur-jQsCMNSzj:1 DELETE https://ip/dev-test/qps/user?QlikTicket=_Bszur-jQsCMNSzj 500 (Internal server error)

doRequest with json P to the first URL error:

VM41904:1 Uncaught SyntaxError: Unexpected token o in JSON at position 1

    at JSON.parse (<anonymous>)

    at Object.<anonymous> ((index):961)

    at j (require.js?QlikTicket=ayllZsvuxMkBQnr4:12)

    at Object.fireWith [as rejectWith] (require.js?QlikTicket=ayllZsvuxMkBQnr4:12)

    at d (require.js?QlikTicket=ayllZsvuxMkBQnr4:13)

    at HTMLScriptElement.c (require.js?QlikTicket=ayllZsvuxMkBQnr4:13)

    at HTMLScriptElement.dispatch (require.js?QlikTicket=ayllZsvuxMkBQnr4:12)

    at HTMLScriptElement.q.handle (require.js?QlikTicket=ayllZsvuxMkBQnr4:12)

doRequest with json P to the second URL error:

Uncaught SyntaxError: Unexpected token :

VM42557:1 Uncaught SyntaxError: Unexpected token o in JSON at position 1

    at JSON.parse (<anonymous>)

    at Object.<anonymous> ((index):961)

    at j (require.js?QlikTicket=J4W1Bls5CU_S79LS:12)

    at Object.fireWith [as rejectWith] (require.js?QlikTicket=J4W1Bls5CU_S79LS:12)

    at d (require.js?QlikTicket=J4W1Bls5CU_S79LS:13)

    at HTMLScriptElement.c (require.js?QlikTicket=J4W1Bls5CU_S79LS:13)

    at HTMLScriptElement.dispatch (require.js?QlikTicket=J4W1Bls5CU_S79LS:12)

    at HTMLScriptElement.q.handle (require.js?QlikTicket=J4W1Bls5CU_S79LS:12)

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