JavaScript defines an object through function and adds an toString of method instance analysis to the object

This article analyzes the example of JavaScript defining objects through function and adding toString() methods to objects. Share with you for your reference. The specific analysis is as follows:

The JS code below defines an movie object via function, an toString method within the movie object, and an toString method via an external function.

<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 is helpful for you to design javascript program.