Basic HTML version of Foils prepared 3 March 99

Foil 126 The prototype Property (cont'd)

From Overview of JavaScript I -- Basic Web Scripting Language CPS616 Technologies of the Information Age -- Spring Semester 99. by Geoffrey C. Fox (Tom Scavo)
We can add methods to built-in objects, too: // Does an array contain element x ? function contains( x ) { for (var i=0; i<this.length; i++) { if (this[i] == x) return true; } return false; }
Now add the method to the Array object with the prototype property: Array.prototype.contains = contains;

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Wed Mar 3 1999