javascript - about validate.js use function -

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            "data[researchcase][sender_mail]": {             required: function() {                  return $("#customer_info").val() =="2";             },             email: function() {                  return $("#customer_info").val() =="2";             }         }         messages: {          "data[researchcase][sender_mail]": {             required: "must input mail",             email:"not right email"          }         }

when customer_info = 1. required validate not work,but email validate work。 try wirte 

email:function(){retrun false} or email:function(){retrun 0}

also not work try delete required validate, email work. wrong?

hoho, know why in validate.js email check not have parameters old code 

        email: function(value, element) {         return this.optional(element) || /^(((....)))\.?$/i.test(value);     },

the new code

        email: function(value, element, param) {         if (!param) {             return true;         }         return this.optional(element) || /^(((....)))\.?$/i.test(value);     },

when customer_info = 1 ,the eamil validate not work. have other question,when wirte eamil:false, email validate not work,so diffrent 

email:function(){return false}

to

email:false

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