jquery dialog获取焦点的方法

$(document).ready(function () {   //初始化新增申请对话框   $("#addBusinessTrip").dialog({     open: function (event, ui) {       $(':input', '#addBusinessTripForm').not(':button, :submit, :reset, :hidden').val('');       $("#addBusinessTripForm").validationEngine({         inlineValidation: false,         success: false,         failure: function () {           callFailFunction();         }       });     },     focus: function (event, ui) {       comsole.log("dsfhsdj");       $("#carOrNot").focus();//修改焦点     },     close: function (event, ui) {       //清空提示信息       $('#addBusinessTripForm').validationEngine('hideAll');     },     autoOpen: false,     width: 480,     modal: true,     buttons: {       "确定": function () {         var valid = $('#addBusinessTripForm').validationEngine('validate');         if (valid == true) {           newOrEditAjax();         } else {           //alert("验证失败！！");         }       },       "取消": function () {         $(':input', '#addBusinessTripForm').not(':button, :submit, :reset, :hidden').val('').removeAttr('checked').removeAttr('selected');         $(this).dialog("close");       }     }   }); });