How to write bootstrapValidator custom validation method

//表单验证 issueInvoiceForm.validation = function(){ $('#issueInvoiceForm').on('init.field.bv', function(e, data) { var $icon = data.element.data('bv.icon'), options = data.bv.getOptions(), // Entire options validators = data.bv.getOptions(data.field).validators; // The field validators if (validators.notEmpty && options.feedbackIcons && options.feedbackIcons.required) { $icon.addClass(options.feedbackIcons.required).show(); } }).bootstrapValidator({ container:'popover', feedbackIcons: { required: 'glyphicon glyphicon-asterisk requiredStar', valid: 'glyphicon glyphicon-ok', invalid: 'glyphicon glyphicon-remove', validating: 'glyphicon glyphicon-refresh' }, fields: { invoiceDate:{validators: {notEmpty: {message: '开票日期不能为空'}}},//开票日期 code:{validators: {notEmpty: {message: '发票编码不能为空'}}}, amount:{ validators:{ notEmpty: {message: '发票金额不能为空'}, numeric: {message: '发票金额只能输入数字'}, callback: { message: '开票金额小于选中金额', callback: function(value, validator) { return false; } } } }, taxRate:{ validators:{ notEmpty: {message: '税率不能为空'}, numeric: {message: '税率只能输入数字'} } }, taxAmount:{ validators:{ notEmpty: {message: '税额不能为空'}, numeric: {message: '税额只能输入数字'} } }, },group:'.validateDiv' }).on('success.form.bv', issueInvoiceForm.issueInvoiceFormBtn).on('error.form.bv',function(){ $("#issueInvoiceFormBtn").removeAttr("disabled");//将保存按钮去除disabled $(".has-error:visible:first").find(":input").focus(); }); };