rules:{

  newPassword: [{validator:(rule,newPassword,callback)=>{

      var all = false

      if(newPassword == ''){

      　　callback(new Error("请输入密码"));

      }else{

         var str = ""

         for(var i=0;i<newPassword.length;i++){

　　　　　　　　str = newPassword.charCodeAt(i)

             if(str > 65280 &&  str < 65375 || str == 12288){

                 all = true

             }

         }

         if(all == true){

             callback(new Error("请输入半角字符"));

         }else{

             callback()

         }

      }

    }, trigger:'blur'}]

}