防止多次點擊產生多個提交

<script>

    var checkSubmitFlg = false;

    $("條件").click(function(){

            //判斷是否已經提交

            if(checkSubmitFlg == true){ 

         return false;

            }

            checkSubmitFlg = true;

            //提交代碼

            submit();

    });

</script>