给easyui的文本框添加onclick等事件

var oneText = $('#tt').datagrid('getEditor',{'index':lastIndex,'field':'listprice'}).target;
oneText.blur(function(){//关键在这里
     var oneTextVal = parseFloat(this.value);
     var twoTextVal = parseFloat($('#tt').datagrid('getEditor',{'index':lastIndex,'field':'unitcost'}).target.val());
     $('#tt').datagrid('getEditor',{'index':lastIndex,'field':'hiddenObj'}).target.val(oneTextVal+twoTextVal);
});