Problem regarding ajax post request

Problem regarding ajax post request

Hello,
I'm trying to make ajax post request to google calendar api, but no posting is happening and the data which i want to post is in this form

{
   "summary": "Title",
   "start": {
      dataTime: "2018-02-12T12:00:00"'
    },
   "end": {
      dataTime: "2018-02-12T13:30:00"'
    }
}



calId and token i've not given because of confidential information

Please Help

Here is the code-
var newEvent = function( start, end){
$( '#m_modal_6'). modal( 'show');
$( '#add_event_submit'). click( function(){
var title = $( '#title'). val();
var start1 = new Date( start);
var end1 = new Date( end);
var dataJ = {
'summary' : title,
'start' :
{
'dateTime' : start1
},
'end' :
{
'dateTime' : end1
}
};

var data1 = JSON. stringify( dataJ);
alert( data1);
$. ajax({
url: calId + '/events ?access_token=' + token ,
type: "POST",
dataType: "jsonp",
data: data1,
success : function(){
alert( "Added Successfully");
},
error : function(){
alert( "Some Error");
}
});
});
}