jquery抛出太多递归异常

Question

I am using fileupload using codeigniter and jquery ajax. On saving other text and file, all things are saved however too much recursion error is thrown in console. The code format to save is as follows:

doc_submitform = function(){
        var frm=$('#frm_save_doc').validate({
            errorElement: "small",
            wrapper: "div",
            debug : true,
            onclick : false,
            onblur  : true,
            focusCleanup: true,
            rules: {
                doc_type:{
                    required:true,
                },
                file_upload:{
                    required:true,
                },
                remarks:{
                    //required: true,
                }
            },

            highlight: function(label) {

                $(label).closest('.control-group').addClass('error');
            },
            submitHandler : function() {
                var file_data =$('#file_upload').prop('files')[0];

                var form_data = new FormData();
                form_data.append('file', file_data);
                form_data.append('doc_type', $('#doc_type').val())
                form_data.append('remarks',$('#remarks').val())
                form_data.append('emp_id', $('#emp_id').val())
                form_data.append('doc_id', $('#doc_id').val())

                $.ajax({
                        url: SITE_URL+'hrm/employee/ajax/action/save_doc_details',  
                        dataType: 'json',  
                        cache: false,
                        contentType: false,
                        processData: false,
                        data: form_data,                         
                        type: 'post',
                        success: function(response){
                            if(response.status == 200){
                                $docTable.fnDraw(false);                                
                            }

                            $('#frm_save_doc #cancel_btn').trigger('click');

                        }
                 });    

            }                           
        });
    },

Answer 1

Check that line:

$('#frm_save_doc #cancel_btn').trigger('click');

#frm_save_doc #cancel_btn is not valid jQuery selector, if you want to specify any number of selectors, you should use:

$( "#selector1, #selector2, #selectorN" );

Can you use just #cancel_btn instead? I think it should works.