JQuery 事件每次翻倍

$('.add_instruction_btn').click(function(e){
                    e.preventDefault();
                    var ins_content=$('#add_instructions').val();
                    var id=$('.useri').val();
                    if(ins_content!="")
                    {
                        //write new instructions to database
                        var id=$('.useri').val();
                        var data="job_id="+job_idx+"&ins="+ins_content+"&client_id="+id+"&key=2";
                        $.ajax({
                            type:"POST",
                            url:"admin_includes/get_instructions.php",
                            data:data,
                            success:function(html2){
                                alert(html2);
                            }
                        });//end ajax
                    }
                    return false;
                });

我似乎已经尝试过 evrything 来阻止每次单击按钮时事件加倍。代码最初在另一个函数中，该函数打开了一个"弹出"样式框，但即使我将其移动到函数之外，它似乎仍然会冒泡。

根据要求：-

$(document).on('click', '.bottom_links .lister a', function(e){
        //e.preventDefault();
        //e.stopPropagation();
        $('.ind_ins').text("");
        var ident=$(this).data('ref1');
        if(ident==1){
            var job_idx=$(this).data('job_id');
            var cl_name=$(this).data('cl_name');
            var icon_stat=$(this).data('img_id');
            var id=$('.useri').val();
            if(icon_stat=="1")
            {
                $('.opaque_scr,.instruction_popup').css('visibility', 'visible');
                $('.instruction_popup h2').html("Add Instructions for Appointment ID: "+job_idx);
                $('.client_name').html("<strong>Client Name: </strong>"+cl_name);
                //get original instructions
                var get_job="job_id="+job_idx+"&key=1";
                $.ajax({
                    type:"POST",
                    url:"admin_includes/get_instructions.php",
                    data:get_job,
                    success:function(html){
                        var split_data=html.split("^");
                        var split_data_count=split_data.length-1;
                        var ins_tb="<table width='100%'>"
                        for(var xs=0;xs<split_data_count;xs++)
                        {
                            var ind=split_data[xs].split("|");
                            var ind_count=ind.length-1;
                            for(var xx=0;xx<ind_count;xx++)
                            {
                                ins_tb+="<tr><td width='75%'>"+ind[0]+"</td><td>"+ind[1]+"</td></tr>";
                            }
                        }
                        ins_tb+="</table>";
                        $(ins_tb).appendTo('.ind_ins');
                    }
                })//end ajax
                $('.add_instruction_btn').click(function(e){
                    e.preventDefault();
                    e.stopPropagation();
                    var ins_content=$('#add_instructions').val();
                    var id=$('.useri').val();
                    if(ins_content!="")
                    {
                        //write new instructions to database
                        var id=$('.useri').val();
                        var data="job_id="+job_idx+"&ins="+ins_content+"&client_id="+id+"&key=2";
                        $.ajax({
                            type:"POST",
                            url:"admin_includes/get_instructions.php",
                            data:data,
                            success:function(html2){
                                alert(html2);
                            }
                        });//end ajax
                    }
                    return false;
                });

            }
        }