Why are my javascript or jquery functions not found when wrapped in $document.ready function () or $function()

Question

in javascript when I wrap my functions (below) in either $(Document).ready(Function(){ ... }) or $function(){ ... } I receive errors that the my function AddContact or EditContact is not found. I am using MVC and this was what I thought would a remedy my issue with javascript being not found after HttpPost, so if someone could explain how to wrap these inside ot $.ready(function() maybe I could resolve both issues.

<script>
       var AddContact = function (id) {

            var url = "../Dataset/AddContact/" + id
            $("#myModalBody").load(url, function () {
                $("#myModal").modal("show");
            })


        };

        var EditContact = function (id) {

            var url = "../Dataset/EditContact/" + id
            $("#myModalBody").load(url, function () {
                $("#myModal").modal("show");
            })


        };
</script>