현재 버전

<script>

	$(document).off('click', 'table tr td').on('click', 'table tr td', function(){
        console.log("선택한 셀 ID : "+this.id);
        let tdId = this.id;
        let dateTime = tdId.split("_");

		$(document).off('click', '#btn_modalOk').on('click', '#btn_modalOk', function(){
            let dName = $('#select_d').val().split("Dr.")[1];
            let dNo = $('#select_d').val().split("]")[0].replace("[","");
            let text = $('#ta_note').val();

            console.log(dateTime[0] + " / " + dateTime[1]);

            console.log(dNo + " / " + text);
            $('#ta_note').val(""); // 초기화
            $('#myModal').modal('toggle'); //


            // 실행.
            $.ajax({
                url: "/c/addApp",
                data: {
                    dNo : dNo,
                    note : text,
                    appDate : dateTime[0]+" "+dateTime[1]
                },
                dataType: 'json',
                type: 'POST',
                success: function (res) {
                    let app = dName + "\n" + " " + text;
                    document.getElementById(tdId).innerText = app;
                },error: function (xhr) {
                    alert("error"+xhr.responseText);
                }
            });



        })

		$(document).off('click', '#btn_modalClose').on('click', '#btn_modalClose', function(){

    })

</script>

위의 코드로 변경해보시고 혹시나 해결이 안되면 다시한번 달아주세요

수정 이력

2020-05-22 16:47:12 에 아래 내용에서 변경 됨 #1
<script>

	$(document).off('click', 'table tr td').on('click', 'table tr td', function(){
        console.log("선택한 셀 ID : "+this.id);
        let tdId = this.id;
        let dateTime = tdId.split("_");

		$(document).off('click', '#btn_modalOk').on('click', '#btn_modalOk', function(){
            let dName = $('#select_d').val().split("Dr.")[1];
            let dNo = $('#select_d').val().split("]")[0].replace("[","");
            let text = $('#ta_note').val();

            console.log(dateTime[0] + " / " + dateTime[1]);

            console.log(dNo + " / " + text);
            $('#ta_note').val(""); // 초기화
            $('#myModal').modal('toggle'); //


            // 실행.
            $.ajax({
                url: "/c/addApp",
                data: {
                    dNo : dNo,
                    note : text,
                    appDate : dateTime[0]+" "+dateTime[1]
                },
                dataType: 'json',
                type: 'POST',
                success: function (res) {
                    let app = dName + "\n" + " " + text;
                    document.getElementById(tdId).innerText = app;
                },error: function (xhr) {
                    alert("error"+xhr.responseText);
                }
            });



        })

		$(document).off('click', '#btn_modalClose').on('click', '#btn_modalClose', function(){

    })

</script>