explain this function new function() {

@pixelsrainMar 08.2011

please explain what type of this function is ,

new function() {
// do some thing
}

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7 Comments(s) _↴

@pixelsrainauthorMar 08.2011 — #how can i access this function and functions inside it.

[CODE]
 
 new function() {
 
   // $.fn.validate = validate() {};
 
  $.fn.validate = {
 
   init: function(o) {
 
   if(o.name == 'username') { this.username(o) };
 
   if(o.name == 'password') { this.password(o) };
 
   if(o.name == 'email') { this.email(o) };
 
   if(o.name == 'dob') { this.dob(o) };
 
   },
 
   username: function(o) {
 
   var user = /[(*()[]+.,/?:;'"~\#$%^&amp;&lt;&gt;)+]/;
 
 <i>    </i>       if (!o.value.match(user)) {
 
 <i>    </i>         doValidate(o);
 
 <i>    </i>        } else {
 
 <i>    </i>         doError(o,'no special characters allowed');
 
 <i>    </i>        };
 
 <i>    </i>    },
 
 <i>    </i>    password: function(o) {
 
 <i>    </i>      var pass = /[(*()[]+.,/?:;'"~\#$%^&<>)+]/;
 
   if (!o.value.match(pass)) {
 
   doValidate(o);
 
   } else {
 
   doError(o,'no special characters allowed');
 
   };
 
   },
 
   email: function(o) {
 
   var email  = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
 
   if (o.value.match(email)) {
 
   doSuccess(o);
 
   } else {
 
   doError(o,'not a valid email');
 
   };
 
   },
 
   dob: function(o) {
 
   var dob  = /(0[1-9]|1[012])+/(0[1-9]|[12][0-9]|3[01])+/(19|20)dd/;
 
   if (o.value.match(dob)) {
 
   doSuccess(o);
 
   } else {
 
   doError(o,'not a valid date');
 
   };
 
   }
 
   };
 
 
 
   function doSuccess(o) {
 
   $('#' + o.id + '_img').html('<img src="images/accept.gif" border="0" style="float:left;" />');
 
   $('#' + o.id + '_li').removeClass("error");
 
   $('#' + o.id + '_msg').html("");
 
   $('#' + o.id + '_li').addClass("success");
 
   }
 
 
 
   function doError(o,m) {
 
   $('#' + o.id + '_img').html('<img src="images/exclamation.gif" border="0" style="float:left;" />');
 
   $('#' + o.id + '_li').addClass("error");
 
   $('#' + o.id + '_msg').html(m);
 
   $('#' + o.id + '_li').removeClass("success");
 
   }
 
   //private helper, validates each type after check
 
   function doValidate(o) {
 
   $('#' + o.id + '_img').html('<img src="images/loading.gif" border="0" style="float:left;" />');
 
   $.post('ajax.php', { id: o.id, value: o.value }, function(json) {
 
   eval("var args = " + json);
 
   if (args.success == true)
 
   {
 
   doSuccess(args);
 
   }
 
   else
 
   {
 
   doError(args,args.msg);
 
   }
 
   });
 
  };
 
 
 
 };
 [/CODE]

@KorMar 08.2011 — #It is a constructor. It can create an object and give it pairs property:value

<i>
 </i>&lt;script type="text/javascript"&gt;
 var Employee= new function(){
 this.firstname='Bob';
 this.name='Dole';
 }
 alert(Employee.firstname);
 alert(Employee.name);
 &lt;/script&gt;

Usually the constructor is written otherwise:

<i>
 </i>&lt;script type="text/javascript"&gt;
 function Constructor(firstname,name){
 this.firstname=firstname;
 this.name=name;
 }
 var Employee=new Constructor('Bob','Dole');
 alert(Employee.firstname);
 alert(Employee.name);
 &lt;/script&gt;

@pixelsrainauthorMar 08.2011 — #thanks for reply. so could you explain main parts from this script

[CODE]
 
 
 new function() {
 
   // $.fn.validate = validate() {};
 
  $.fn.validate = {
 
   init: function(o) {
 
   if(o.name == 'username') { this.username(o) };
 
   if(o.name == 'password') { this.password(o) };
 
   if(o.name == 'email') { this.email(o) };
 
   if(o.name == 'dob') { this.dob(o) };
 
   },
 
   username: function(o) {
 
   var user = /[(*()[]+.,/?:;'"~\#$%^&amp;&lt;&gt;)+]/;
 
 <i>    </i>       if (!o.value.match(user)) {
 
 <i>    </i>         doValidate(o);
 
 <i>    </i>        } else {
 
 <i>    </i>         doError(o,'no special characters allowed');
 
 <i>    </i>        };
 
 <i>    </i>    },
 
 <i>    </i>    password: function(o) {
 
 <i>    </i>      var pass = /[(*()[]+.,/?:;'"~\#$%^&<>)+]/;
 
   if (!o.value.match(pass)) {
 
   doValidate(o);
 
   } else {
 
   doError(o,'no special characters allowed');
 
   };
 
   },
 
   email: function(o) {
 
   var email  = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
 
   if (o.value.match(email)) {
 
   doSuccess(o);
 
   } else {
 
   doError(o,'not a valid email');
 
   };
 
   },
 
   dob: function(o) {
 
   var dob  = /(0[1-9]|1[012])+/(0[1-9]|[12][0-9]|3[01])+/(19|20)dd/;
 
   if (o.value.match(dob)) {
 
   doSuccess(o);
 
   } else {
 
   doError(o,'not a valid date');
 
   };
 
   }
 
   };
 
 
 
   function doSuccess(o) {
 
   $('#' + o.id + '_img').html('<img src="images/accept.gif" border="0" style="float:left;" />');
 
   $('#' + o.id + '_li').removeClass("error");
 
   $('#' + o.id + '_msg').html("");
 
   $('#' + o.id + '_li').addClass("success");
 
   }
 
 
 
   function doError(o,m) {
 
   $('#' + o.id + '_img').html('<img src="images/exclamation.gif" border="0" style="float:left;" />');
 
   $('#' + o.id + '_li').addClass("error");
 
   $('#' + o.id + '_msg').html(m);
 
   $('#' + o.id + '_li').removeClass("success");
 
   }
 
   //private helper, validates each type after check
 
   function doValidate(o) {
 
   $('#' + o.id + '_img').html('<img src="images/loading.gif" border="0" style="float:left;" />');
 
   $.post('ajax.php', { id: o.id, value: o.value }, function(json) {
 
   eval("var args = " + json);
 
   if (args.success == true)
 
   {
 
   doSuccess(args);
 
   }
 
   else
 
   {
 
   doError(args,args.msg);
 
   }
 
   });
 
  };
 
 
 
 };
 
 
 [/CODE]

@KorMar 08.2011 — #In that case, new function() creates an anonymous object (anonymous singleton). I guess it is useful in the debugging process. And keeps the inner codes in private scope.

<i>
 </i>&lt;script type="text/javascript"&gt;
 new function(){
 this.property='somevalue'
 this.method=function(){alert(this.property)}
 this.method()
 }
 &lt;/script&gt;

@pixelsrainauthorMar 08.2011 — #so i can assign this anonymous object to and other object. if yes how?

@pixelsrainauthorMar 08.2011 — #what is the meaning of init: function(o) in the function .

why ' : ' use after init .

@KorMar 08.2011 — #JSON:

www.json.org

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