JavaScript implements a method like Java GetClass () to get object class names _javascript tips

Source: Internet
Author: User

The example in this article describes a method for JavaScript implementations like GetClass () in Java to get object class names. Share to everyone for your reference. Specifically as follows:

There is no function in JavaScript to return a particular type name

such as an object Console.log (obj);
Get is [object Htmltablecellelement] If you want a function to be able to return Htmltablecellelement JS default No such function can implement a

var getobjectclass = function (obj) {
 if (obj && obj.constructor && obj.constructor.toString ()) {
   
    /*
    * For browsers which have name in the constructor * of the
    Object,such as Chrome *
   /if (obj.co Nstructor.name) {return
    obj.constructor.name;
   }
   var str = obj.constructor.toString ();
    * * Executed if the return of Object.constructor.toString () is 
    * "[object objectclass]"
   /if ( Str.charat (0) = = ' [')
   {
     var arr = Str.match (/\[\w+\s* (\w+) \]/);
   } else {/
      * * executed if the RE Turn of Object.constructor.toString () is 
      * ' function objectclass () {} '
      * for IE Firefox
      /
     var arr = Str.match (/function\s* (\w+)/);
   }
   if (arr && arr.length = = 2) {return
      arr[1];
   }
  }
  return undefined; 
};


   

I hope this article will help you with your JavaScript programming.

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