校验文本输入框不能为空，长度限制

$(document).ready(function(){
    $("#dialog").dialog({
    autoOpen: false,
    resizable: false
    });
$("input[name='psychologyQuestion.receiverName']").click(function(){
$('#dialog').dialog('open');
});

//验证
if($("#messageBox").length>0){   //显示结果div
$("#messageBox").hide();
}
$.validator.setDefaults({      
submitHandler: function(form) {  
form.submit();   
    }      
}); 
$("#psychologyForm").validate({  //fromID
errorLabelContainer: "#messageBox",
debug:true,
wrapper: "li",
rules:{
"psychologyQuestion.title":{required:true,byteRangeLength:[1,40]}, //需要校验的属性值 取的是name  逗号前是控制不能为空，后是控制长度
"psychologyQuestion.content":{required:true,byteRangeLength:[1,400]}
},
messages:{
"psychologyQuestion.title":{
required:'<s:text name="help.title.noEmpley"/>',  //不能为空的提示语
byteRangeLength:'<s:text name="help.title.lengthRange"/>'  //长度超出范围的提示语
},
"psychologyQuestion.content":{
required:'<s:text name="help.content.no.empty"/>',
byteRangeLength:'<s:text name="help.content.lengthRange"/>'
}
}
});


//长度验证
$.validator.addMethod("byteRangeLength", function(value, element, param) {    
  var length = value.length;    
  for(var i = 0; i < value.length; i++){    
   if(value.charCodeAt(i) > 127){    
    length++;    
   }    
  }    
  return this.optional(element) || ( length >= param[0] && length <= param[1] );    
});
});