sample_ajax.js

$.ajax({
    method: "POST",
    url: '{% url 'aj_location' %}',
    dataType:'json',
    data: {'data':this.dataset.gmap},
    success: function(data){
        if(data.is_saved){
            alert('Added '+data.data.name);

        }else{
            alert(''+data.data.name+' is existed ', 'orange','times');
        }
    },
    error:function (request, status, error) {
        console.log(error);
        alert('Error ! Try again please', 'red','times');

    }
});