JavaScript defines an object through function and adds the toString () method to the object for instance analysis

JavaScript defines an object through function and adds the toString () method to the object for instance analysis

This article describes how to use JavaScript to define objects by using functions and add the toString () method to objects. Examples of how to use function-defined objects and adding methods in javascript are analyzed, which has some reference value, for more information, see

 

 

In this article, we analyze the JavaScript function to define an object and add the toString () method to the object. Share it with you for your reference. The specific analysis is as follows:

The following JS Code defines a movie object through function, and defines a toString method in the movie object. The toString method is implemented through an external function.

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<Script type = "text/javascript"> Function movieToString (){ Return ("title:" + this. title + "director:" + this. director ); } Function movie (title, director ){ This. title = title; This. director = director; This. toString = movieToString; // assign function to this method pointer } Var aliens = new movie ("Aliens", "Cameron "); Document. write (aliens. toString ()); </Script>

I hope this article will help you design javascript programs.