itskp-odense/Frontend/Assets/Ajax/deletePost.js

function deletePost(id) {
    $.ajax({
        type: 'get',
        url: '../Backend/controller/deletePost.php',
        data: {'delete_id':id},
        success:function (data) {
            console.log(data);
        },
        error:function (data) {
            console.log(data);
        }
    });
}